HOWTO Restore a FreeBSD system using thefixit CDMark Hannon markhannon at optusnet.com.au Fri May 20 10:49:44 GMT 2005

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Here are some notes I made when recently restoring an install. Perhapssomething could go into the handbook? Regards/Mark

============================================================= HOWTO Restore a FreeBSD installation directly from dump files =============================================================

These instructions document how to restore a FreeBSD installation from aseries of dump files stored on a local HDD. They have been used tomigrate a FreeBSD installation from a vmware guest install to a localHDD install.

Step One - Backup-----------------

Backup your FreeBSD installation to a series of dumpfiles.

# /sbin/dump -L -0 -f root.0 /# /sbin/dump -L -0 -f var.0 /var# /sbin/dump -L -0 -f usr.0 /usr

This will create three dumpfiles with your root, var and usr partitions.

Move the files to a local disk partition.

Step Two - Create FreeBSD partition-----------------------------------

Boot the 5.4-RELEASE-disc1 CD and select the Configure->Fdisk option.Create a FreeBSD partition and select W to write the changes. Ignorethe warnings and quit.

Step Three - Create FreeBSD disklabel-------------------------------------

Select the disklabel option and create and mount new options as pernormal. Sysinstall creates the disklabel, makes the new filesystems andmounts them all under /mnt. i.e in the automatic disklabel mode theuser will end up with the following filesytems created and mounted:

/ = /mnt /tmp = /mnt/tmp /var = /mnt/var /usr = /mnt/usr

The following steps will restore the backup installation into thesepartitions.

Step Four - Restore the Filessystems------------------------------------

Select the fixit -> cd/dvd option and enter the Fixit shell.

Start csh to get command line completion

Fixit# csh

Setup a large /tmp filesystem so that restore doesn't complain. Do thisby linking to the restored systems /tmp.

# mv tmp/ tmp.old # ln -sf /mnt/tmp tmp

Mount the local disk partition with the files to restore.

# mkdir /dumpfiles # /mnt2/usr/sbin/mount_msdosfs /dev/ad0s5 /dumpfiles

Restore the root partition

# cd /mnt # /mnt2/sbin/restore xf /dumpfiles/root.0

Restore the remaining partitions

# cd /mnt/var # /mnt2/sbin/restore xf /dumpfiles/var.0 # cd /mnt/usr # /mnt2/sbin/restore xf /dumpfiles/usr.0

Enter the installed system to cleanup

# /mnt2/sbin/chroot /mnt

Correct the /tmp permissions in the installed system

# chmod 1777 /tmp

Edit fstab etc

# vi /etc/fstab etc # vi /etc/rc.conf

Exit the installed chroot, fixit csh and fixit shells

# ^D # ^D # ^D

Step Five - Reboot------------------

Reboot and start your new system (either via another bootloader or bysetting the FreeBSD partition active).

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