Friday, December 18, 2009

Raid metadata prevent fedora from installing on Sata Drive

I was trying to install fedora12 on my PC but the installation process didnt recognize the sata disk at all...after spend some time searching, it turned out to be the RAID metadata that is causing the issue...

Below are the output:

[root@localhost george]# dmraid -r
/dev/sdc: ddf1, ".ddf1_disks", GROUP, ok, 312237856 sectors, data@ 0

[root@localhost george]# dmraid -x
ERROR: ddf1: wrong # of devices in RAID set "ddf1_System" [1/2] on /dev/sdc

About to delete RAID set ddf1_System

WARNING: The metadata stored on the raidset(s) will not be accessible after deletion
Do you want to continue ? [y/n] :y
ERROR: Raid set deletion is not supported in "ddf1" format
[root@localhost george]#

still trying to figure out how to remove the raid metadata without putting back the drive to RAID controller (it is on another computer, the HP ML110 server I mentioned in my previous post)

1 comment:

Anonymous said...

I had a similar problem installing a PATA drive in Fedora 12. The PATA drive was formerly part of a RAID1 mirrored volume.

My solution was found by Googling. I used the boot option "nodmraid" to tell the kernel to go ahead and use drives that have RAID metadata. Until I tried this, my 80 GB hard drive was never recognized by the Fedora installer.