From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wols Lists <antlists@youngman.org.uk>
Subject: Re: Looking to pick PCIe x4/x8 4+ SATA expansion card recommendation.
Date: Mon, 28 Mar 2016 22:03:27 +0100
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On 28/03/16 21:07, John Stoffel wrote:
> You do want to test booting from a broken RAID1 boot device.  When I
> recently did my big re-org, I found that to make it boot I had to move
> the working boot drive to the non-working slot, since of course the
> failed one was effectively /dev/first-drive and that's how grub needed
> to boot.

Your setup regime really should check that you install grub on ALL your
drives. Easier said than done though when adding new drives ... :-)

Cheers,
Wol