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? Dave M
On Thu, Jul 21, 2011 at 1:24 PM, David McGuffey <davidmcguffey at verizon.net> 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? > > Dave M > > > _______________________________________________Can you see the 2 HDD's in the console, when you run fdisk -l? If so, then simply use fdisk to remove all the partitions, then use the installer to partition and format them -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532
I usually boot from the installer CD and go to a virtual terminal (Alt-F1). In the shell; dd if=/dev/zero of=/dev/disk-i-want-to-destroy bs=512 count=1 I'd guess that the partition table has some microsoft funkiness in it that needs to be wiped. Take, care with this, it can and does eat data....... Cheers. On Thu, Jul 21, 2011 at 9:24 PM, David McGuffey <davidmcguffey at verizon.net>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? > > Dave M > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110721/0d6f48a3/attachment-0001.html>
21.07.2011 15:31, Brian McKerr ?????:> I usually boot from the installer CD and go to a virtual terminal > (Alt-F1). In the shell; > > dd if=/dev/zero of=/dev/disk-i-want-to-destroy bs=512 count=1 > > I'd guess that the partition table has some microsoft funkiness in it > that needs to be wiped. > > Take, care with this, it can and does eat data....... > > > Cheers. >If this does not work, try to erase the LAST cylinder of each disk. Metadata may be stored there. dd if=/dev/zero of=/dev/disk-i-want-to-destroy bs=x count=y skip=z where x,y,z depend on your disk geometry
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 > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > >-- Robert Heller -- 978-544-6933 / heller at deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments