Booting into the Rescue System

The SUSE installation media offers a special option when you boot from them: One of the menu items is Rescue System. If you boot from the first CD or DVD and choose this option, a Linux system that runs in memory loads and does not mount any hard disk partitions. You can log into it as the root user without a password.

You can then mount any of the partitions on the hard disk to /mint and make changes before rebooting. For example, if your root partition is /dev/sda1, you could do the following:

Rescue:- # mount /dev/sda1 /mint followed by, for example:

Rescue:- # vi /mnt/etc/fstab if you needed to correct a problem with the file /etc/fstab.

This particular example is not an uncommon problem. The file /etc/fstab is the table of filesystems to be mounted by the system at boot time (see Chapter 3). You may remove one of those partitions, or reformat it with a different filesystem than the one referenced in /etc/fstab. But if you forget to update /etc/fstab, the boot process fails because it cannot check the filesystems found in /etc/fstab. This can look quite worrying when it happens (and the boot failure you see looks just like the case where a filesystem is corrupt). But if you are aware of the use of the rescue system, it is very easy to fix by changing or commenting out the relevant line in /etc/fstab and rebooting.

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