--On Friday, December 14, 2012 10:53 PM -0800 "James A. Peltier"
<jpeltier@xxxxxx> wrote:
> It's quite likely a software RAID card and when the OS was installed it
> only installed grub on one of the hard disks, the one that it thought was
> primary. I've seen this happen with quite a few software cards. Each
> time the OS booted it would load a different hard disk as primary. If
> you can, try disabling RAID on it all together.
Thanks. I completely disabled the Nvidia RAID controller in the BIOS and
that made the 6 drives appear normal. I then had to delete the RAID
metadata from the last 4 drives with dd, as there's a bug in dmraid that
computes the offset to the metadata wrong. (It reports the offset and
length to the metadata in bytes, then tries to use the same numbers as
records to clear the data.)
<https://bugzilla.redhat.com/show_bug.cgi?id=734468>
<https://www.redhat.com/archives/dm-devel/2011-August/msg00121.html>
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