Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007 Installation Manual page 959

To see the system messages, either use the command dmesg or view the file /var/
log/messages.
Checking and Manipulating Configuration Files
As an example for a configuration that might be fixed using the rescue system, imagine
you have a broken configuration file that prevents the system from booting properly.
You can fix this using the rescue system.
To manipulate a configuration file, proceed as follows:
1 Start the rescue system using one of the methods described above.
2 To mount a root file system located under /dev/sda6 to the rescue system,
use the following command:
mount /dev/sda6 /mnt
All directories of the system are now located under /mnt
3 Change the directory to the mounted root file system:
cd /mnt
4 Open the problematic configuration file in the vi editor. Adjust and save the
configuration.
5 Unmount the root file system from the rescue system:
umount /mnt
6 Reboot the machine.
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
(page 934) for details). However, if you
Common Problems and Their Solutions 941