rado wrote:
But my goal is to be able to test the raid system by just unplugging hda to mimic a faulty drive and have it just carry on and boot from hdc.
md0 = hda1/hdc1 /boot (primary boot partitions on both drives) md1 = hda2/hdc2 /
Can't you just do a software test:
raidsetfaulty /dev/md1 /dev/hdc2 (for example)
Check out the LDP http://www.tldp.org/HOWTO/Software-RAID-HOWTO-6.html#ss6.3 for details including how to add the disk back to the array.