[syslinux] syslinux raid mode
H. Peter Anvin
hpa at zytor.com
Tue Sep 11 10:00:58 PDT 2007
Tomas M wrote:
> I noticed syslinux-3.50 implements some 'raid mode' (-r option), which
> should be used to boot the next device.
> But there is nothing about it in the documentation.
> Would you please describe what does it do?
> I assume it's something different than chainloading a boot loader from
> different disk/partition, right?
RAID mode changes the behaviour in the case of a disk failure.
Normally, on disk failure, syslinux prints an error message and stops.
In RAID mode, it returns to the BIOS with INT 18h, which with a properly
functioning BIOS will cause it to boot the next device in sequence. If
syslinux is used on a RAID-1 /boot, then this will attempt to boot the
next drive in the mirror set.
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