Disk Copy 6

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Users Guide

Disk Copy 6.1
http://www.apple.com/http://www.apple.com/

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Apple Computer, Inc.

1997 Apple Computer, Inc. All rights reserved.

This manual and the software described in it are copyrighted by Apple (some portions of the

software are copyrighted by Han, Chen & Son and RSA Data Security, Inc.), with all rights

reserved. Under the copyright laws, this manual may not be copied, in whole or in part,

without the written consent of Apple. Your rights to the software are governed by the

accompanying software license agreement.

The Apple logo is a trademark of Apple Computer, Inc., registered in the U.S. and other

countries. Use of the keyboard Apple logo (Option-Shift-K) for commercial purposes

without the prior written consent of Apple may constitute trademark infringement and unfair

competition in violation of federal and state laws.

Every effort has been made to ensure the information in this manual is accurate. Apple is not

responsible for printing or clerical errors.


1 Infinite Loop

Cupertino, CA 95014-2084

408-996-1010

http://www.apple.com

Apple, the Apple logo, AppleScript, Mac, Macintosh, PlainTalk, PowerShare, and PowerTalkare trademarks of Apple Computer, Inc., registered in the U.S.A. and other countries.

Balloon Help, DART, DigiSign, Finder, Floppy Disk Maker, PC Exchange, and SuperDrive

are trademarks of Apple Computer, Inc.

ShrinkWrap is a trademark of Aladdin Systems, Inc., and may be registered in certain

jurisdictions.

AutoTypers Make DiskScript and Make SimpleText created using The FileTyper Suite,

copyright 1991-1996 Daniel Azuma, all rights reserved, and included with permission.

Helvetica and Times are registered trademarks of Linotype-Hell AG and/or its subsidiaries.

PowerPC is a trademark of International Business Machines Corporation, used under license

therefrom.

Mention of third-party products is for informational purposes only and constitutes neither an

endorsement nor a recommendation. Apple assumes no responsibility with regard to the

performance or use of these products.

Long live the dancing bears!
http://www.apple.com/http://www.apple.com/http://www.apple.com/http://www.apple.com/http://www.apple.com/http://www.info.apple.com/http://www.info.apple.com/http://www.apple.com/

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1 G etting Started 1

System requir e ments and su p p o rted f e a t u r es 1

In s t a l l ing Disk Co py 6.1 1

Re move any co pies of Disk Im age Mounter and Disk Co py 6.0.1 1

2 Disk Copy 6.1 Basics 2

About disk images 2

D isk image fo rmats 2

D OS and ProD OS - fo rmatted disk images 3

M o u n ting disk images 3

Ve r i fica tion and authe n tica tion 3

D isk Co py 6.1 main win d ow 4

Im age and vol u me name 4

C he cksum status 4

Dig i Sign status 4

3 Using Disk Copy 6.1 5

M o u n ting disk images 5

Cr e a ting disk images 9

Co nve rting disk images 12

Ca lc ula ting and ve r i f y ing che cksu ms 13

Ca lc ula ting disk che cksu ms 13

Ve r i f y ing image ch e cksu ms 14

Sig n ing and ve r i f y ing digital sig n a t u r es 15

Ad d ing digital sig n a t u r es to disk images 15

Ve r i f y ing digital sig n a t u r es 16

About the Disk Co py log 16

4 Working with Disk S cripts and Apple S cript 17

About Disk Scripts 17

E xe c u ting Disk Scripts 17

Cr e a ting Disk Scripts 18

iii

Contents

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D isk Script actions 18

D isk Script sy n t ax 18

D isk Script fe a t u r es 18

Sa m ple Disk Scripts 19

Mount and la u n ch an appl ica tion with a spe ci fic doc u ment 19

Ma ke flo p pi es of all disk images 19

Ap pl e Script su p p o rt 19

5 Preferences 20

G e neral Prefe r e n c es 20

Al low user i n t e r a ction 20

Save log 20

Ma ke multi ple flop pi es 20

Co n firm eras es 20

Use spe e ch 21

Ve r i fica tion and Au the n tica tion 21

Verify che cksum 21

Verify Dig i Sign signature 21

E xcept Disk Scripts 21

E xcept remote images 21

Cr e a ting Im ages 22

Ze ro blocks 22

Add Dig i Sign signature 22

Mount afte r wa rds 22Im age ext e n sion 22

6 Sp e cial Tips 23

Tu rn off verify che cksu m when mo u n ting disk images resid ing on CDs 23

Not all software can be installed from mounted disk images 23

Set up Disk Co py 6.1 to be la u n ched by other kinds of disk images 23

Use the Re a d - O n ly Co m p r essed fo rmat 23

iv C o n t e n t s

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1Getting Started

1 Getting Started

D isk Co py 6.1 is a utility appl ica tion that will mount disk images on your deskto p,

m a ke exa ct co pi es of flo p py disks from a disk image, co nve rt disk images from one

fo rmat to an o the r, and create a disk image from a mounted vol u me or in d ividua l

fold e r. Using Disk Scripts and Ap pl e Sc r i p t, it can be used to automate softwa r e

in s t a l la tions and disk image man i p ula tio n.

System requirem ents and supported features

D isk Co py requi r es System Software 7.0.1 or later and is a fat bi n a r y for both

PowerPC and 68K-based Mac OS co m p a tible computers; A/UX and Ma cin to s h

Ap pl ica tion Enviro nment (MAE) are not su p p o rted. Disk Co py 6.1 fe a t u r es

ext e n sive Ba l loon Help and su p p o rts Drag and Drop (requi r es System Software 7.5

or la t e r ), Ap pl e Sc r i p t, PlainTalk Text - to - Spe e ch, and Dig i Sign digital sig n a t u r es.

Installing Disk Copy 6.1

D isk Co py can reside anywhere on your hard disk. It is reco m mended to place an

a l ias to it on the desktop for easy acc ess.

D isk Co py 6.1 requir es the Obj e ct Su p p o rt Lib and Ap pl e Sc r i p t Lib ext e n sions on

Powe r P C - based computers (they are in cluded in a stan d a rd System Softwa r ein s t a l l ). These fi l es can be located in the Ext e n sions folder of the System Folder or

in the sa me folder as Disk Co py 6.1.

Remove any copies of Disk Image Mounter and Disk Copy 6.0.1

D isk Co py 6.1 provid es all the functionality of Disk Im age Mounter, a utility th a t

was in cluded with so me Powe r Book mo d els. Disk Co py 6.0.1 was rel e ased only to

d evelo pers and Su p p o rt Professional Sol u tion Se r i es su b s c r ibe r s. To avoid

p ro bl e ms wo r k ing with disk images, it is import ant to remove all co pi es of both

D isk Im age Mounter and Disk Co py 6.0.1 and reb ui ld your desktop after in s t a l l ing

D isk Co py 6.1.

While Disk Co py 6.1 also fe a t u r es the functionality of Disk Co py 4.2 and Flo p py

D isk Ma ke r, ne i ther of these uti l i ti es will in t e r fere with Disk Co py 6.1 and do not

need to be remove d .

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2 Chapter 2

About disk images

A disk image is a discrete el e ct ro n ic repres e n t a tion of an in d ividual vol u me; the

i m age co n t a ins all the in fo rm a tion to make an exa ct du plicate of the orig inal. A

co py made by dragg ing icons is not an exa ct co py; there may be invisible fi l es or

o ther i n fo rm a tion that is not co pied. When you use disk images, the vol u me as a

wh ole has been du pl icated co rr e ctly and co m pl e t ely.

Ma k ing disk images of flo p py disks is also a co nvenient and safe way to make

ba ckups of orig inal master disks from purch ased software packages and allows yo u

to el e ct ro n ica l ly dis t r ibute the contents of disks.

Disk image formats

D isk Co py 6.1 can read and write three types of NDIF (New Disk Im age Fo rm a t )

d isk images, Disk Co py 4.2 disk images, as well as read other disk image fo rm a t s.

2 Disk Copy 6.1 Basics

Format Description

Read/Write Disk images in this format will allow you to make changes when mounted as if

Disk Copy 6.1 they were actual floppies or hard disks. Disk image size for this format can vary

(NDIF) from a minimum of 401K to a maximum of 2GB.

Read-Only Disk images in this format will allow you to open files and run applications whenDisk Copy 6.1 mounted, but not make any changes as if they were locked floppy disks or

(NDIF) CD-ROMs. Read-Only image format is similar to disk image formats you may

have worked with previously, except it truncates any empty space, resulting in

smaller disk images, and disk image size can vary from a minimum of 401K to a

maximum of 2GB. This format also includes a checksum.

Read-Only Disk images in this format function the same as Read-Only but in addition to

Compressed truncating any empty space, the Read-Only Compressed format compacts the

Disk Copy 6.1 data in the disk image, resulting in even smaller disk images. Disk Copy 6.1

(NDIF) provides extremely fast decompression so the only extra time necessary is

during compression. This format is a good choice for disk images that will be

downloaded. Disk image size for this format can vary from a minimum of 401K

to a maximum of 2GB and includes a checksum. Macintosh Plus, SE, Classic,

Portable, and PowerBook 100 computers can mount and make floppies from,but cannot create, a Read-Only Compressed format disk image.

Disk Copy 4.2 Disk images in this format work the same as the Read-Only format but are

compatible with the previous version of Disk Copy and many third party disk

image utilities. Disk Copy 4.2 format only supports 720K, 800K, and 1.4MB

floppy sizes. This format also includes a checksum.

continues .

Disk Copy 6.1 can

read NDIF disk

images created by

Disk Copy 6.0.1, but

NDIF disk images

created by Disk Copy

6.1 are not

backwards

compatible.

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DOS and ProDOS- format ted disk image s

D isk Co py 6.1 requir es PC Exch ange to work with disk images that co n t a in DOS or

P ro D OS vol u mes, su ch as a PC drive co n t a iner or a DOS - fo rmatted flo p py.

To make DMF (a 1.7 MB PC fo rmat) flo p pi es, Disk Co py requi r es a Su pe r D r ive

and Mac OS 7.6, wh ich in cl u d es PC Exch ange ve r sion 2.1.1.

Mounting disk image s

Instead of making flo p pi es from disk images to co py fi l es or install softwa r e, fo r

exa m pl e, Disk Co py 6.1 allows you to have disk images appear on the desktop as if

you had made a flo p py and in s e rted it in to the flo p py drive.

M o u n ting is also the only way to work with disk images that are la rger th an a

f lo p py. Wo r k ing with mounted disk images is as fast as wo r k ing with a hard drive

and you no lo nger need a stack of flo p pi es.

Verific ation and auth entication

D isk Co py 6.1 su p p o rts two me thods to ensure the in t egrity of disk images :

che cksu ms and digital sig n a t u r es.

A che cksum is a number derived from lo o k ing at the data that makes up the disk

i m age. It is stored in the disk image itsel f. If any ch anges are made to the disk

i m age, the che cksum will ch ange as well. When Disk Co py 6.1 beg ins to work with

a disk image, it can optio n a l ly verify that che cksum has not ch anged to ensure no

data co rru p tion or alteration has occ u rr e d .

D igital sig n a t u r es are used to approve, or sig n , fi l es to assure its authe n tici t y.

D ig i Sign software is part of, but does not requir e, Ap pl es PowerTalk softwa r e.

The che cksum allows Disk C o py 6.1 to verify the contents of a disk image, wh i l e

the signature allows authe n tica tion of the source of the disk image.

3Disk Copy 6 .1 Basics

Format Description

PC Drive Disk Copy 6.1 will mount as read/write, but does not create disk images in this

Container format. Container files are created by Apples PC Compatibility software, which

works only on DOS-Compatible Mac OS computers.

DART Disk Copy 6.1 will read, mount, and convert from, but does not create disk images

in this format. DART is an older Apple utility for working with disk images which

creates compressed disk images.

ShrinkWrap Disk Copy 6.1 will read, mount, and convert from, but does not create disk images

Floppy in this format. ShrinkWrap versions 2.1 and earlier were released as shareware.

ShrinkWrap floppy disk images are nearly identical to Disk Copy 4.2 format.

ShrinkWrap Disk Copy 6.1 will read, mount, and convert from, but does not create disk images

Volume in this format. ShrinkWrap versions 2.1 and earlier were released as shareware.

ShrinkWrap volume disk images are not floppy size and do not have a checksum.

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Disk Copy 6.1 main window

Image and volume nam e

These lines show the file name of the disk image last operated on and the name of

the vol u me co n t a ined with in the disk image, res pe ctively.

Ch e cksum status

The ch e cksum line will dis play one of the fol low ing messages :

m VALID ([image type] ca lc ulated [ch e cksum]): The sel e cted disk image has

not been altered or damaged and is safe to us e.

m IN VALID ([image type] expe cted [che cksum]): A che cksum fa i ls usua l ly

be cause the disk image is co rrupt. Disk Co py 6.1 will most likely wa rn you the

i m age is damaged and cannot be used instead of dis play ing th is message.

m not che cked ([image type] expe cted [ch e cksum]): The Verify Che cksu m

o p tion is des el e cted in the Prefe r e n c es dia log box.

m n o ne: Many other disk image uti l i ti es do not add a che cksum to so me disk

i m ages they create. Th is does not me an the disk image is co rrupt; there is

si m ply no way to verify its in t eg r i t y.

Digi Sign status

The Dig i Sign line will appear if the Dig i Sign ext e n sion is installed and dis play

o ne of the fol low ing messages :

m V ERIFIE D: The sel e cted image has not been altered since it was sig ned. T h is

l ine will also in d icate if the sig ner has expired (sig n a t u r es must be renewe d ).

m IN VALI D: The sel e cted image has been altered since it was sig ne d .

m sig ned, not che cke d: The disk image is sig ned, but the Verify Signature optio n

is des el e cted in the Prefe r e n c es dia log box.

m not sig ne d: The disk image does not have a digital sig n a t u r e.

4 Chapter 2

File name of the last

disk image, the name

of the volume within

it, the validity of the

checksum, and if the

DigiSign extension is

installed, the digital

signature status.

Results of the last

action performed.

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Mounting disk images

1 To mount a disk image, do any of the following:

m Sel e ct one or more disk images and doubl e - cl ick. Th is only wo r ks for Disk Co py

6.1 images (Re a d / Writ e, Re a d - O n ly, and Re a d - O n ly Co m p r ess e d ).

m Sel e ct one or more disk images and drag in to the Disk Co py 6.1 main win d ow

( r e q uir es System Software 7.5 or la t e r ).

m Sel e ct one or more disk images and drag onto the Disk Co py 6.1 appl ica tio n

ico n.

m Choose Mount Im age. . . from the Im age menu and sel e ct a disk image.

A fter a disk image is sel e cted, Disk Co py 6.1 will present a prog r ess dia log fo r

mo u n ting and che cksum ve r i fica tion (if the option is sel e ct e d ), and an icon for the

mounted vol u me will appear on the deskto p.

5Using Disk Copy 6 .1

3 Using Disk Copy 6.1

Click to verify the

checksum of the

selected disk image.

If the checksum fails,

the disk image will

not be mounted.

Click to verify the

signature of the


If the signature is

invalid, the disk

image will not be

mounted.

Icon for the volume contained

in the disk image as shown

mounted on the desktop.

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You can now work with the mounted vol u me as you wo uld any regular vol u me. To

u nmo u n t, ei ther drag the icon to the Tr ash or sel e ct the icon and use the Pu t

Away co m m and from the File me n u. When you res t a rt you co m p u t e r, any

mounted disk images will be unmo u n t e d .

2 To see how your computer recognizes the data on the mounted volume, select the icon for the

mounted volume in the Finder and choose Get Info from the File menu.

In the exa m ple below, you can see how a mounted disk image is a virt ual disk to

your co m p u t e r. What lo o ks like a disk on the desktop is act ua l ly a disk image.

6 Chapter 3

The Kind and Size

items appear as they

would for any floppy,

hard disk, or CD-

ROM, but the

Where item shows

that the volume Disk

Tools is contained in

the disk image 1.4

MB Disk Imagewhich is on the

volume Disk Copy.

Data that appears on

the mounted volume

Disk Tools is

actually in the disk

image named 1.4

MB Disk Image,

which is on the hard

disk volume Disk

Copy, so reading

and writing data to

and from the

mounted image will

be as fast as from thehard disk.

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Making floppies from disk images

1 To make a floppy from a disk image, do any of the following:

m Sel e ct one or more disk images and doubl e - cl ick while pressing the Op tion key.

Th is only wo r ks for Disk Co py 6.1 images (Re a d / Wri t e, Re a d - O n ly, and Re a d -

O n ly Co m p r ess e d ).

m Sel e ct one or more disk images and drag in to the Disk Co py 6.1 main win d ow

while pressing the Op tion key (requir es System Software 7.5 or la t e r ).

m Sel e ct one or more disk images and drag onto the Disk Co py 6.1 appl ica tion ico n

while pressing the Op tion key.

m Choose Ma ke a Flo p py. . . from the Uti l i ti es menu and sel e ct a disk image.

O n ly images that co n t a in flo p py - size vol u mes will appear in th is dia log box; la rge r

size vol u mes can only be mounted or co nve rt e d .

D isk Co py 6.1 requir es PC Exch ange to make flo p pi es from disk images th a t

co n t a in DOS or Pro D OS vol u mes, su ch as a PC drive co n t a iner or a DOS -

fo rmatted flo p py.

To make DMF (a 1.7 MB PC fo rmat) flo p pies, Disk Co py requi r es a Su pe r D r ive

and Mac OS 7.6, wh ich in cl u d es PC Exch ange ve r sion 2.1.1.

A fter a disk image is sel e cted, Disk Co py 6.1 will present a prog r ess dia log fo r

che cksum ve r i fica tion and ask you for a flo p py that is the sa me size as the disk

i m age. You can n o t, for exa m pl e, use a 1.4 MB flo p py to make an 800K vol u me.

W hen making flop pi es, Disk Co py 6.1 us es more me mory that its defa ult me mo r y

s e t ting. If there is not free RAM ava i la bl e, Disk Co py 6.1 will not be able to make

the flo p py and will present an error message. Either quit other ru n n ing

a p pl ica tions or in c r e ase Disk Co pys Prefe rred me mory size to 204 8 K.


When making

floppies, Disk Copy

always verifies the

checksum of the



the floppy will not be

made.

Click to verify the

signature of theselected disk image.

If the signature is

invalid, the floppy will

not be made.

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If you i n s e rt a flo p py that has been previo usly fo rmatted and the Co n firm Er as es

o p tion is sel e cted in the Prefe r e n c es dia log box, Disk Co py 6.1 presents a dia log

b ox ask ing you to co n firm before erasing the flo p py and co py ing new data to it.

2 Click the appropriate button to proceed or cancel.

D isk Co py 6.1 will eject the flo p py when it is fin is hed. If the Ma ke Mul ti pl e

F lo p pi es option is sel e cted in the Prefe r e n c es dia log box, Disk Co py 6.1 will

p r esent a dia log box ask ing for the next flo p py to make.

8 Chapter 3

Click Yes or press Command-

Shift-Y to erase the disk and

copy new data to it.

Click Cancel or press

Command-Period or

the Esc (Escape) key

to stop.

Click or press Return or

Enter to eject the current

floppy and use another.

Click Stop or press

Command-Period or the

Esc(Escape) key to stop.

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Cre ating disk image s

1 To create a disk image, do any of the following:

m Sel e ct one or more folders or disks and drag in to the Disk Co py 6.1 main

w in d ow (requi r es System Software 7.5 or la t e r ). Ea ch folder and disk will be

made i n to a separate disk image.

m Sel e ct one or more folders or disks and drag onto the Disk Co py 6.1 appl ica tio n

ico n. Ea ch folder and disk will be made in to a separate disk image.

m Choose Create Im age from Folde r. .. from the Im age menu and sel e ct a fold e r.

A fter a folder is sel e cted, Disk Co py 6.1 will ca lc ulate the size of the data in the

folder and use that as the defa ult disk image si z e.

The only exc e p tion to th is is folders that co n t a in less th an 401K of data; the

m inimum disk image size is 401K and Disk Co py 6.1 will defa ult to that si z e.

H oweve r, saving in ei ther Re a d - O n ly or Re a d - O n ly Co m p r essed fo rmat will resul t

in a disk image that is closer to the act ual size of the data, as both fo rmats tru n ca t e

out unused space.


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m Choose Create Im age from Disk. . . from the Im age menu and sel e ct a disk.

A fter a disk or flo p py is sel e cted, Disk Co py 6.1 defa ults to a disk image size the

sa me as the parti tion size of the sel e cted vol u me, wh ich in cl u d es unused space.

P r ess the Sh i ft key when sel e cting a disk in the dia log box to ca lc ulate the amo u n t

of data in the disk (excl u d ing free space). Disk Co py 6.1 will then show options fo r

b o th parti tion and data si z e. Th is also wo r ks when dragg ing disk or flo p py icons to

the Disk Co py 6.1 win d ow or appl ica tion ico n.

2 Type a name and select a format for the new disk image.

10 Chapter 3

Click to mount the new disk

image after it is saved.

Click to add a DigiSign

signature to the new disk

image after it is saved.

Set the default disk

image name

extension (.img in

this example) in the

Preferences dialog

box.

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3 Choose a size for the new disk image.

If for exa m pl e, you want to image a folder with only 300K in it, but need to be

a ble to use the make flo p py feature of Disk Co py 6.1, you wo uld need to choose a

s t an d a rd flo p py size disk image si z e.


Choose a format for

saving the new disk

image. Use Balloon

Help or see Chapter

1 for more details on

the different formats.

Choose a size for the

new disk image or

select Custom... to

specify an exact size.

Only 720K, 800K, 1.4

MB, and 1.7 MB disk

image sizes can be

can be used with the

make floppy feature.

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You can also spe cify any size be tween 401K and 2GB by sel e cting Cu s to m. . .

f rom the Size pop-up me n u.

Converting disk image s

1 To convert a disk image from one format to another, do any of the following:

m Sel e ct one or more disk images and doubl e - cl ick while pressing the Co m m an d

key. Th is only wo r ks for Disk Co py 6.1 images (Re a d /Wr i t e, Re a d - O n ly, an d

Re a d - O n ly Co m p r ess e d ).

mSel e ct one or more disk images and drag in to the Disk Co py 6.1 main win d owwhile pressing the Co m m and key (requir es System Software 7.5 or la t e r ).

m Sel e ct one or more disk images and drag onto the Disk Co py 6.1 appl ica tion ico n

while pressing the Co m m and key.

m Choose Co nve rt Im age. . . from the Im age menu and sel e ct a disk image.

A fter a disk image is sel e cted, you will see the sa me stan d a rd dia log box that is

p r esented when creating a new disk image.

Co nve r sion is act ua l ly creating a new image based on the orig inal.

12 Chapter 3

Type the desired disk

image size in this

box. Use the pop-up

menu to choose

blocks, kilobytes (K),or megabytes (MB).

Click to verify the

checksum of the



the disk image will

not be converted.

Click to verify thesignature of the


If the signature is

invalid, the disk

image will not be

converted.

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2 Follow steps 2 and 3 from the previous section, Creating a disk image.

D isk Co py 6.1 will then create a new disk image based on the sel e cted orig inal a n d

save it using the size and fo rmat optio n s. To make the co nve rted disk image la rge r

th an the orig in a l, choose a la rger si z e. To make the co nve rted disk image smaller

th an the orig in a l, press the Sh i ft key when sel e cting a disk in the dia log box to

ca lc ulate the amount of data in the disk (excl u d ing free space). Disk Co py 6.1 will

then show options for both parti tion and data si z e. Th is also wo r ks when dragg ing

d isk or flo p py icons to the Disk Co py 6.1 win d ow or appl ica tion ico n.

Calculating and verif ying che cksums

Calculating disk ch e cksums

D isk Co py 6.1 always ca lc ula t es and in cl u d es che cksu ms in the disk images it

c r e a t es (except Re a d / Write fo rm a t ), and can ca lc ulate a che cksum for a vol u me

su ch as a flo p py or hard disk. Th is can be us ef ul if you want to compare a disk

i m age to its source disk to ensure their contents are id e n tica l .

To calculate a checksum for a volume:

Choose Ca lc ulate Disk Ch e cksu m. .. from the Uti l i ti es menu and sel e ct a disk.


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The ca lc ulated ch e cksum will be dis played in the main win d ow and written to the

log file if the Save Log option is sel e cted in the Prefe r e n c es dia log box.

C he cksu ms on unlocked vol u mes are not very usef ul be ca use any action performe d

on the vol u me will result in a different che cksum ca lc ula tio n. Hard disks can be

locked with va r io us fo rm a t ting uti l i ti es, su ch as Ap pl es Drive Se t u p.

Verif ying image ch ecksums

Ve r i f y ing the che cksum of a disk image helps assure that the file has not be e n

d a m aged and is not co rrupted. Disk Co py 6.1 always ve r i fi es the che cksum of a

d isk image before making a flo p py from it to ensure it is an exa ct co py.

To verify the checksum of a disk:

m Choose Verify Im age Che cksu m.. . from the Uti l i ti es menu and sel e ct a disk

i m age.

m The Mount Im age and Co nve rt Im age dia log boxes also have options fo r

ve r i f y ing the che cksum of a disk image before co n tin uing to work with it.

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D isk Co py 6.1 will then verify the che cksum of the sel e cted disk image. Th is can

t a ke a co n sid e r a ble amount of ti me on la rge disk images.

The status of the che cksum will be dis played in the main win d ow and written to

the log file if the Save Log option is sel e cted in the Prefe r e n c es dia log box.

If the che cksum fa i ls, the disk image may have been altered or damaged.

Signing and verifying digital signature s

These fe a t u r es require the Dig i Sign ext e n sio n. Sig n ing disk images also requir es a

va l id Sig ner fi l e. For more in fo rm a tion on digital sig n a t u r es, see the Dig i Sig n

s e ctions of the Powe r Share Se rve r, System 7 Pro, or System 7.5 doc u me n t a tio n.

Adding digital signatures to disk images

To add a DigiSign digital signature to a disk image, do any of the following:

m Choose Sign Im age. . . from the Uti l i ti es menu and sel e ct a disk image.

m The Save Im age dia log box also has options add a digital signature to a disk

i m age after saving it.

A digital signature will be added to the disk image and it will be locked. Newly

created Re a d / Write fo rmat disk images cannot be sig ned, be ca use they are altered

by any action, su ch as mo u n ting.


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Verifying digital signature s

Ve r i f y ing the signature of a disk image helps assure that the file has not be e n

altered since it was sig ned. Th is is hel p f ul for authe n tica ting the source of a fi l e.

To verify a digital signature:

m Choose Verify Digital Sig n at u r e. . . from the Uti l i ti es menu and sel e ct a disk

i m age.

m The Mount Im age, Co nve rt Im age, and Ma ke Flo p py dia log boxes also have

o p tions for ve r i f y ing the digital signature of a disk image before co n tin uing to

work with it.

The status of the signature will be dis played in the main win d ow and written to

the log file if the Save Log option is sel e cted in the Prefe r e n c es dia log box.

About the Disk Copy log

The Disk Co py log win d ow keeps a detailed reco rd of all activity since the Disk

Co py appl ica tion was la u n che d :

m Ea ch spe ci fic action (mo u n t, create, co nve rt, etc.).

m The elapsed ti me and speed (in Kiloby t es per second) of each actio n.

m C he cksum and digital signature va l idity i n fo rm a tio n.

m The pe r c e n t age of space savings for disk images saved in Re a d - O n ly and Re a d -

O n ly Co m p r essed fo rm a t s.m The results of each actio n.

To vi ew the log win d ow, choose Sh ow Log Win d ow from the Edit me n u.

The contents of the log win d ow can be saved to the Disk Co py Log file by

s el e cting the Save Log option in the Prefe r e n c es dia log box.

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About Disk S cripts

A Disk Script is a spe cial file co n t a in ing co m m ands that in s t ru ct Disk Copy 6.1 to

per form an action on a list of disk images, and to optio n a l ly la u n ch an appl ica tio n

w i th or without a spe cific doc u ment. Disk Scripts are not related to, and do not

r e q uire Ap pl e Script to ru n.

Exe cuting a DiskScript

To execute a DiskScript, do any of the following:

m Sel e ct one or more Disk Scripts and double -click.

m Sel e ct one or more Disk Scripts and drag in to the Disk Co py 6.1 main wi n d ow

( r e q uir es System Software 7.5 or la t e r ).

m Sel e ct one or more Disk Scripts and drag onto the Disk Co py 6.1 appl ica tio n

ico n.

m Choose Execute Disk Sc r i p t . . . from the File menu and sel e ct a Disk Sc r i p t .

17Working wi th DiskScr ip ts and App leScr ip t

4 Working with DiskScripts and AppleScript

Click to verify the

checksum of all disk

images referenced in

the DiskScript.

Click to verify the

signature of all disk

images referenced in

the DiskScript.

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Cre ating Disk S cripts

1 Create a new file with SimpleText or any word processor and enter the content of the DiskScript.

Refer to the fol low ing sections for the spe ci fic co m m ands and sy n t ax.

2 Save the file as text (the default for SimpleText).

3 Change the file type to hscr and the creator to ddsk.

There are many uti l i ti es that can ch ange the type and creator of a fi l e.

Disk S cript actions

D isk Co py 6.1 su p p o rts three actions in Disk Scripts:

m Mount on the desktop all the disk images spe ci fied in the Disk Sc r i p t .

m La u n ch an appl ica tion (and optio n a l ly a doc u ment) after the specified disk

i m ages are mounted on the deskto p.

m Ma ke flo p pi es from all the flo p py - sized disk images specified in the Disk Script.

Disk S cript syntax

The first line of the Disk Script determ ines the action Disk Co py 6.1 is to pe r fo rm :

The subsequent lines co n sist of the list of disk images to be operated upon. Only

o ne disk image can be listed per line.

If the target disk images are in the sa me folder as the Disk Sc r i p t, each line can

co n sist of the name of a disk image without the path to it. If the target disk images

are not in the sa me folder as the Disk Sc r i p t, the name of a disk image with the

co m plete path to it is requir e d .

Al t e rn a tively, pla cing only a colon : in the second line of the Disk Sc r i p t

in s t ru cts Disk Co py 6.1 to mount all images in the sa me folder as the Disk Sc r i p t .

18 Chapter 4

First Line Result

Disk Copy 6.1 will mount all the disk images listed in the

DiskScript.

Disk Copy 6.1 will mount all the disk images listed in the

DiskScript and launch the specified application.

Disk Copy 6.1 will mount all the disk images listed in

the DiskScript and launch the specified application, opening

the specified document.

MAKEFLOPPY Disk Copy 6.1 will make a floppy from each of the floppy-

sized disk images listed in the DiskScript. If theMake

Multiple Floppies option is selected in the Preferences

dialog, clicking Cancel at the Insert Disk dialog will

continue to the next disk image.

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Disk S cript fe atures

m All fi l es that are not disk images in the target folder will be ig n o r e d .

m D isk Co py 6.1 will resolve alias es if they point to disk images.

m If a disk image fa i ls to mo u n t, the Disk Script stops exe c u tion and any spe ci fi e d

a p pl ica tion does not la u n ch.

m The disk images listed in the Disk Script can be a mix of any size and fo rm a t

su p p o rted by Disk Co py 6.1.

m W hen the appl ica tion la u n ched by the Disk Script qui t s, all disk images mo u n t e d

by the Disk Script will be unmounted and removed from the deskto p, unless they

are in use by an o ther appl ica tio n.

S ample DiskScripts

Mount and launch an applic ation with a spe cific docum ent

Th is script will mount all disk images in the sa me folder as the Disk Script an d

la u n ch the appl ica tion Installer with the doc u ment Installer Sc r i p t, wh ich arelocated on the disk named Disk One.

Disk One:Installer:Disk One:Installer Script

:

M ake floppies of all disk image s

Th is script will mount all disk images in the sa me folder as the Disk Sc r i p t .

MAKEFLOPPY

:

Apple S cript support

D isk Co py 6.1 is ful ly scriptabl e, reco rd a bl e, and attach a bl e. To get a list of the

s c r i p ting co m m ands ava i la bl e, use a script editor appl ica tion to vi ew the

Ap pl e Script dictionary of Disk Co py 6.1.

At t a ch a bility is an easy and powe r f ul way to extend the ca p a bi l i ti es of Disk Co py

6.1. If there is a folder named Sc r i p t s in the sa me folder as Disk Co py 6.1, any

Ap pl e Script dro plets or co m piled Ap pl e Scripts will appear in a Sc r i p t s me n u.

D isk Co py 6.1 will auto m a tica l ly detect and dis play any Ap pl e Script dro plets orco m piled Ap pl e Scripts added after Disk Co py 6.1 la u n ches when it is bro ught to

the fo r eg round.

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All prefe r e n c es are stored in the Disk Co py Prefs fi l e, located in the Prefe r e n c es

folder in the System Fold e r.

General Preferenc es

Allow us er interaction

W hen th is option is sel e cted, Disk Co py 6.1 will present dia log boxes when cert a in

o pe r a tions co m plete or fa i l, in addition to noting the result in the status fi eld. T h is

s h o uld be turned off if Disk Co py 6.1 is being called by Ap pl e Script. If it is not

t u rned off, modal dia logs co uld appear when Disk Co py 6.1 is ru n n ing, preve n ting

Ap pl e Script from co n tin uing exe c u tio n.

S ave log

W hen th is option is sel e cted, Disk C o py 6.1 will write all messages presented in

the main win d ow status fi eld to a file named Disk Co py Log in the Prefe r e n c es

folder in the System Fold e r.

M ake multiple floppies

W hen th is option is sel e cted, Disk C o py 6.1 will make mul ti ple flo p pi es from the

sa me disk image. After each flo p py is co m pl e t e, the In s e rt Flo p py di a log box will

a p pear until the Can c el button is cl icke d .

Confirm erases

W hen th is option is sel e cted, Disk Co py 6.1 will present a co n firm a tion di a log box

before erasing a flo p py and copying new data to it.

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Use sp ee ch

W hen th is option is sel e cted, Disk Co py 6.1 will use PlainTalk to speak dia logs an d

o ther in fo rm a tional messages. Th is feature requir es PlainTalk Text - to - Spe e ch.

Verification and Authentic ation

Verify ch e cksum

W hen th is option is sel e cted, Disk Co py 6.1 will defa ult to verify the che cksum of

d isk images. Th is setting affe cts the defa ults of

m the Mount Im age, Co nve rt Im age, and Execute Disk Script dia log boxes

The defa ult can be ove rr idden by des ele cting the Verify Che cksu m option in

e a ch of these dia log boxes.

m any disk image ope r a tions activated by doubl e - cl ick ing icons or by dragg ing

icons to the Disk Co py 6.1 win d ow or appl ica tion ico n

Verify Digi Sign signature

W hen th is option is sel e cted, Disk Co py 6.1 will defa ult to verify the Dig i Sig n

d igital signature of disk images. Th is setting affe cts the defa ults of

m the Mount Im age, Co nve rt Im age, Ma ke Flo p py, and Execute Disk Script dia log

b oxes.

The defa ult can be ove rr idden by des el e cting the Verify Sig n a t u r e option in

e a ch of these dia log boxes.

m any disk image ope r a tions activated by doubl e - cl ick ing icons or by dragg ing

icons to the Disk Co py 6.1 win d ow or appl ica tion ico n

Except Disk S cripts

W hen th is option is sel e cted, Disk Co py 6.1 will not verify the che cksum orDigi Sign digital signature of disk images referenced from Disk Sc r i p t s. Disk Co py

6.1 will, however always verify the ch e cksum when making a flo p py.

Except remote images

W hen th is option is sel e cted, Disk Co py 6.1 will not verify the che cksum or

D ig i Sign digital signature of disk images that reside on Ap pl e Share serve r s.

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Cre ating Images

Zero blocks

W hen th is option is sel e cted, Disk Co py 6.1 will write zeros to a newly created disk

i m age before writing data to it. Th is co m pl e t ely eras es any residual in fo rm a tio n

that is present and will ensure optimal space savings and co m p r ession when saving

in the Re a d - O n ly or Re a d - O n ly Co m p r essed fo rm a t s. It is reco m mended that th is

o p tion always be sel e ct e d .

Add Digi Sign signature

W hen th is option is sel e cted, Disk C o py 6.1 will defa ult to adding a Dig i Sig n

d igital signature to newly created disk images after saving. Th is setting affe cts the

d efa ults of the Save Im age dia log box. The defa ult can be ove rr idden by

d es el e cting the Add Dig i Sign Sig n a t u r e option in th is dia log box.

Mount afterwards

W hen th is option is sel e cted, Disk Co py 6.1 will defa ult to mount newly created

d isk images after saving. Th is setting affe cts the defa ults of the Save Im age dia logb ox. The defa ult can be ove rr idden by des el e cting the Mount Aft er ward s optio n

in th is dia log box.

Image extension

Th is is the defa ult ext e n sion that Disk Co py 6.1 will add to the name of newly

created disk images. You will see th is in the Na me fi eld of the Save Im age dia log

b ox.

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Turn off verify che cksum when mounting disk images re siding on CDs

If you are going to be wo r k ing with disk images that are on a CD-ROM or othe r

r e a d - o n ly me d ia and you are sure of the in t egrity of the fi l es, des el e ct the Ve r i f y

C he cksu m option in the Prefe r e n c es dia log for faster disk image mo u n ting.

Not all soft ware can be installed from mounted disk images

So me software installers look for a flo p py to be in the flo p py drive and cannot be

installed from mounted images. Use Disk Co py 6.1 to make the flo p py and the n

install the softwa r e.

Set up Disk Copy 6.1 to be launched by oth er kinds of disk image s

Wi th System Software 7.5 or la t e r, you can co n figure your computer to have Disk

Co py 6.1 la u n ch when you doubl e - cl ick disk images created by other disk image

u ti l i ti es, su ch as Disk Co py 4.2 and Sh r inkWra p:

m The Ma cin tosh Easy Open (or Mac OS Easy Open) co n t rol panel must be

in s t a l l e d .

m Re move co pi es of other disk image uti l i ti es and reb ui ld the deskto p.

m Now when you doubl e - cl ick on a disk image created by an o ther uti l i t y, you will

be prompted to sel e ct an appl ica tion to open the fi l e. Sel e ct Disk Co py 6.1 to

m a ke it the defaul t . Ma cin tosh Easy Open (or Mac OS Easy Open) will

r e me m ber the setting and use Disk Co py 6.1 to open si m i lar disk images.

Use the Re ad - Only Compressed format

The Re a d - O n ly Co m p r essed fo rmat has a number of advan t ages :

m Im ages take up much less space, yet mount and work as fast as other disk image

fo rm a t s. Th is can save va l ua ble hard drive space and shorten down load ti mes.

m Store fi l es in Re a d - O n ly Co m p r essed fo rmat disk images instead of creating

a r ch ives with co m p r ession uti l i ti es; just doubl e - cl ick to acc ess your fi l es. Th is is

es pe cia l ly hel p f ul for fi l es stored on remote servers; you no lo nger have to co py

the arch ive to your local hard drive and deco m p r ess it.

23Specia l T ips

6 Special Tips

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