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20.7 Troubleshooting
This section lists some of the problems frequently encountered when booting with
GRUB and a short description of possible solutions. Some of the problems are covered
in articles in the Knowledgebase at http://support.novell.com/. Use the
search dialog to search for keywords like GRUB, boot, and boot loader.
GRUB and XFS
XFS leaves no room for stage1 in the partition boot block. Therefore, do not
specify an XFS partition as the location of the boot loader. This problem can be
solved by creating a separate boot partition that is not formatted with XFS.
GRUB Reports GRUB Geom Error
GRUB checks the geometry of connected hard disks when the system is booted.
Sometimes, the BIOS returns inconsistent information and GRUB reports a GRUB
Geom Error. If this is the case, use LILO or update the BIOS. Detailed information
about the installation, configuration, and maintenance of LILO is available in the
Support Database under the keyword LILO.
GRUB also returns this error message if Linux was installed on an additional hard
disk that is not registered in the BIOS. stage1 of the boot loader is found and
loaded correctly, but stage2 is not found. This problem can be remedied by regis-
tering the new hard disk in the BIOS.
System Containing IDE and SCSI Hard Disks Does Not Boot
During the installation, YaST may have incorrectly determined the boot sequence
of the hard disks. For example, GRUB may regard /dev/hda as hd0 and /dev/
sda as hd1, although the boot sequence in the BIOS is reversed (SCSI before
IDE).
In this case, correct the hard disks during the boot process with the help of the
GRUB command line. After the system has booted, edit device.map to apply
the new mapping permanently. Then check the GRUB device names in the files
/boot/grub/menu.lst and /boot/grub/device.map and reinstall the
boot loader with the following command:
grub --batch < /etc/grub.conf
The Boot Loader
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Table of Contents
Troubleshooting
