[CentOS] How to remove Microsoft soft raid?

Drew drew.kay at gmail.com
Thu Jul 21 15:09:11 UTC 2011

>From the sounds of it it's fake raid. M$ doesn't leave any signatures
on their raid system that linux will detect. dm/md raid can see
fakeraid signatures in newer versions so the installer may be picking
up on that.


On 07/21/2011, Robert Heller <heller at deepsoft.com> wrote:
> At Thu, 21 Jul 2011 07:24:19 -0400 CentOS mailing list <centos at centos.org>
> wrote:
>> Have a quad core workstation that was running WinXP_64 that I want to
>> blow away and install CentOS 6.  C6 install process finds raid metadata
>> associated with sda and sdb, and then excludes them from the rest of the
>> installation process.
>> There doesn't appear to be an option for disassembling the raid as part
>> of the install process.  I think there should be.
>> Any tricks to removing/by-passing the soft raid left over from the
>> previous OS?
> Is this pure WinXP_64 software RAID or BIOS-assisted 'fakeraid'?  If the
> latter, go into the BIOS and change its settings from 'RAID' to 'AHCI'
> or other 'native' SATA mode.
> The only other thought would be to use a Live CD to clobber the disks
> (eg using fdisk or 'dd if=/dev/zero of=/dev/sda' or something). It might
> also be possible to get to a shell process with Alt-F2 in the installer
> and using fdisk, etc. to clobber the disks -- do this *before* screen
> where it asks about partitioning, etc.
>> Dave M
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> Robert Heller             -- 978-544-6933 / heller at deepsoft.com
> Deepwoods Software        -- http://www.deepsoft.com/
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