Am 20.10.2013 11:54, schrieb Mick:
> Any ideas why the Ubuntu installation won't boot?
> 

My guess would be, you cannot boot, because if you install grub in /dev/md0.

Upon boot the bios cannot find stage1 of the bootloader, which normally
lies in the MBR (which also houses the partition table).

Is a setup as you wish - sda and sdb as raid1, and partitions only on
md0 - bootable in general?