--- On Fri, 4/2/10, aurfalien@xxxxxxxxx <aurfalien@xxxxxxxxx> wrote:
> From: aurfalien@xxxxxxxxx <aurfalien@xxxxxxxxx>
> Subject: partition woes (mapper/isw_bdihgcgahe_Volume0p2)
> To: "CentOS mailing list" <centos@xxxxxxxxxx>
> Date: Friday, April 2, 2010, 8:03 PM
> Hi,
>
> I found 2 identical drives lying around and put them into a
> system.
>
> When booting from a Centos 5.x installer, and when being
> presented
> with the formatting option (disk druid), it says I have 1
> volume of;
>
> mamapper/isw_bdihgcgahe_Volume0p2
>
> I can't seem to get rid of it. I have 2 physical
> disks but disk druid
> is seeing 1 volume thats the same size as one of the 2
> identical drives.
>
> I've tried everything from yanking the 2nd drive,
> installing Centos
> with 1 drive, then installing the second drive and doing;
>
> dd if=/dev/zero of=/dev/sdb
>
> ... to even installing diff OS's like Ubuntu and Windows
> which see 2
> individual disks where I repartition/reformat the drives.
>
> Seems as though I can't truly re write a part of the master
> boot
> record or some other area.
>
> I'm pretty feeble with this crap so can any one help me get
> a clue on
> what to do?
>
> These drives may have been in some hard ware raided system
> of the
> past, am unsure and no one here knows.
>
1) turn off raid in your bios
2) type the below command to erase meta data for the raid on the desired drive
dmraid -E -r /dev/sdX
if needed, turn the raid back on (so you can use it for single drives)
--
Mark
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
