Grub won't install to raid-1
Grub won't install to raid-1 disks
Description of problem: Two SCSI drives, /dev/sda and /dev/sdb. RAID-1 used to make mirrored / and /boot. LILO handles this configuration with root=/dev/md0I tried grub-install with each of /dev/md0, /dev/md1, /dev/sda, and /dev/sdb. Each reported that /dev/md? does not have any corresponding BIOS drive, and failed to overwrite the MBR. A device.map containing fd0, sda, and sdb was built but md0 and md1 were not mentioned.Solution:I was incurring the same problems, but was finally able to get grub to install by doing the following:# grub --batch
Probing devices to guess BIOS drives. This may take a long time.
GRUB version 0.93 (640K lower / 3072K upper memory) [ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename.]
grub> root (hd0,0)
root (hd0,0)
Filesystem type is ext2fs, partition type 0xfd
grub> setup (hd0)
setup (hd0)
Checking if "/boot/grub/stage1" exists… no
Checking if "/grub/stage1" exists… yes
Checking if "/grub/stage2" exists… yes
Checking if "/grub/e2fs_stage1_5" exists… yes
Running "embed /grub/e2fs_stage1_5 (hd0)"… 16 sectors are embedded.
succeeded
Running "install /grub/stage1 (hd0) (hd0)1+16 p (hd0,0)/grub/stage2
/grub/grub.conf"… succeeded
Done.Contents of /boot/grub/device.map:
(fd0) /dev/fd0
(hd0) /dev/hdadf listing:Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md1 10080428 1361604 8206760 15% /
/dev/md0 2063440 38036 1920588 2% /boot
/dev/md2 62712132 35536 59490916 1% /local
none 111476 0 111476 0% /dev/shm
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