[Debian] Attached HDD; OS will not boot, loads grub rescue.
My initial install of Debian's had both hard drives in RAID 1 have bad sectors, both drives failing, so I started a fresh install with, with the same RAID 1 set up.
I plug in one of the spare drives and the OS will not boot with it attached.
Grub loads and then:
error: disk missing
Proceeds to grub rescue.
I've tried searching for guides on finding the right drive and manually booting it but nothing very clear.
set rot=md/0 (which is correct) so I'm unsure why it cannot find it /boot/grub and boot.
Basically all I want to do as attached this spare drive and recover the data from it.