Hi, I think you are trying to cure the wrong disease ;-) > [root@dmna /root]# pvcreate -f /dev/md0 > pvcreate -- invalid partition type 0x83 for "/dev/md0" (must be 0x8e) shows what is wrong: try to set the partition id to 0x8e with fdisk/sfdisk/cfdisk - that should solve the problem. HTH, Peter Mit freundlichem Gruss/Best Regards Peter Wuestefeld IBM Certified System Administrator AIX 4.3 IBM Certified Support Professional AIX 4.3 ================================== res nova Unternehmensberatung GmbH ...aktiv in AIX MAIL: Ruppmannstrasse 41 D-70565 Stuttgart, Germany FON: +49 711 78888 0 FAX: +49 711 78888 99 WWW: http://www.resnova.de SMTP: mailto: Peter.Wuestefeld@resnova.de Computers are useless. They can only give you answers. -- Pablo Picasso <table width=100%> <tr valign=top> <td> <td>Andreas Dilger <adilger@turbolinux.com> Sent by: owner-linux-lvm@msede.com 24.08.00 02:02 <td> To: Peter Green <pcg@gospelcom.net> cc: Andreas Dilger <adilger@turbolinux.com>, linux-lvm@msede.com Subject: Re: [linux-lvm] LVM and sw RAID1</table> Peter writes: > [root@dmna /root]# pvcreate /dev/md0 > pvcreate -- invalid partition type 0x83 for "/dev/md0" (must be 0x8e) > > [root@dmna /root]# pvcreate -f /dev/md0 > pvcreate -- invalid partition type 0x83 for "/dev/md0" (must be 0x8e) > > [root@dmna /root]# pvcreate -ff /dev/md0 > pvcreate -- invalid partition type 0x83 for "/dev/md0" (must be 0x8e) Have you tried running "pvcreate -v -d /dev/md0"? It may be that you get some more clues with this. Maybe even strace of the above. It looks like pvcreate is not getting the correct "dev" or "rdev" from the inode... Cheers, Andreas -- Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto, \ would they cancel out, leaving him still hungry?" http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert