I'm attempting to setup a 2-drive (sda, sdb) RAID 1 in my PC, using Raider to convert from my old single drive (sda) system to the new RAID 1.

From sda, on sdb I ran:

# raider -R1 
# raider --run

and it finished ok setting up the empty drive into the RAID array and copied all data. Now I have to swap the disks, but I can't make my PC boot from sdb, it always boot from sda.

I've tried to modify the BIOS boot settings but nothing changed, I can only choose HD as boot device and change mount order, but not boot order between them.

I'm using Debian Squeeze and Grub as boot loader.


Motherboard: ASROCK N68C-S UCC

HD: 2x 1Tb WD SATA2

migrated from serverfault.com Aug 7 '13 at 13:33

This question came from our site for system and network administrators.

  • Does your server not have hot swap drive bays? Just pull the drives and put them back in in the opposite order. What kind of server is it? – Grant Aug 7 '13 at 13:13
  • I'm sorry, It's a regular PC, I use it as a server at home, sorry. I'll edit & change it. – Amin Aug 7 '13 at 13:28
  • Can you please provide your grub.conf file? It's typically under /etc or /boot. – slm Aug 7 '13 at 13:48
  • /boot/grub/grub.cfg? it's an autogenerated file, it think it's not what you need, isn't it? I've been looking for the clasical menu.lst but I can't find it – Amin Aug 7 '13 at 18:39

Solved, to boot from second drive, in GRUB's command line:

set root=(hd1)
chainloader +1

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