Hi, Since my last post, I have downloaded 1.0.1-rc4 and compiled the tools. I can now vgcreate using /dev/md1. Thanks. lvm commands work well, with gcc version # 2.96 on 2.4.3-20 mandrake kernel. But during my previous tests I had done 'e2fsck /dev/md0'. Maybe because of that, I have the following problem. # pvcreate -vff /dev/md0 pvcreate -- locking logical volume manager pvcreate -- checking physical volume name "/dev/md0" pvcreate -- getting physical volume size pvcreate -- device "/dev/md0" has a partition table # echo $? 7 Then I did the following :- dd if=/dev/zero of=/dev/md0 Didn't make any difference. Can you please help? Thanks Sarma P.S: # cat /proc/mdstat Personalities : [raid1] read_ahead 1024 sectors md1 : active raid1 hdc9[1] hda9[0] 2097024 blocks [2/2] [UU] md0 : active raid1 hdc6[1] hda6[0] 2097024 blocks [2/2] [UU] unused devices: <none>