My BIOS has some problems and sometimes boot order of disks changes. I thought that if I insall grub on to the MBR of second data disk, it may boot. First disk(sda) is for boot and operating system, second disk(sdb) is for /var. All partitions are labeled and fsck has labels as partition references.
I have install grub on to MBR of second disk by "grub-install /dev/sdb". It installed succesfully. However when I change the order to second disk to simulate, I got: "Error 15: File not found" on grub stage.
| root (hd0,0) | | kernel /boot/vmlinuz-3.5.3 ro root=LABEL=/ console=ttyS0,19200n8 | | initrd /boot/initrd-3.5.3.img
If I change grub line "root (hd0,0)" to "root (hd1,0)" it boots correctly. However, this should work without admin intervention.
How can I build such a self working grub boot on case of a disk order change?