Novell LINUX ENTERPRISE DESKTOP 10 SP2 - DEPLOYMENT GUIDE 08-05-2008 Deployment Manual page 853

Repairing and Checking File Systems
Generally, file systems cannot be repaired on a running system. If you encounter serious
problems, you may not even be able to mount your root file system and the system boot
may end with a kernel panic. In this case, the only way is to repair the system
from the outside. It is strongly recommended to use the YaST System Repair for this
task (see Section "Using YaST System Repair"
need to do a manual file system check or repair, boot the rescue system. It contains the
utilities to check and repair the ext2, ext3, reiserfs, xfs, dosfs, and vfat
file systems.
Accessing the Installed System
If you need to access the installed system from the rescue system to, for example,
modify the boot loader configuration, or to execute a hardware configuration utility,
you need to do this in a "change root" environment.
To set up a "change root" environment based on the installed system, proceed as fol-
lows:
1 First mount the root partition from the installed system and the device file system:
mount /dev/sda6 /mnt
mount --bind /dev /mnt/dev
2 Now you can "change root" into the new environment:
chroot /mnt
3 Then mount /proc and /sys:
mount /proc
mount /sys
4 Finally, mount the remaining partitions from the installed system:
mount -a
5 Now you have access to the installed system. Before rebooting the system, un-
mount the partitions with umount -a and leave the "change root" environment
with exit.
(page 829) for details). However, if you
Common Problems and Their Solutions 837