<snip>
> Thanks for everyone's feedback. I made some progress by changing to
> a single lilo.conf file and changing boot to /dev/md0, but I still
> can't get my system to boot when sdb is offline.
>
Whether you can boot with a drive missing from the array is very
dependent on your bios. It is not consistent among vendors. In some
cases, the bios will automatically look for the first available drive
and use that, in others if the "C" drive is missing you must actually
use bios setup to designate a different drive.
How you apply the boot information to the drives in the array is
dependent on how the bios works. If it will automatically find the
first drive then both raid1 boot partions should be the same with the
boot device being 0x80. If you must switch the drives with bios it
varies with the implementation and may be 0x80 or 0x81. If the drive
must be physically moved to a new slot or ID number, the 0x80 is the
drive designation. LILO is not very helpful in writing the boot track
for this variability. You usually have to use separate lilo.config
files for each boot device.
For unattended operation that is bullet proof, you can use a floppy
disk -- of coures, that could fail also, but it is not in operation
most of the time and probably is more reliable in the long run than
the hard drive. To guarantee bootablity from the raid1 device, you
must purchase a mbrd that automatically selects the first available
drive for boot.
Michael
[EMAIL PROTECTED]
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