Hi all, I am in the process of trying to set up LVM on my machine and I am having some difficulty. I have had a look in the mailing list archives and in Google groups, but haven't had any luck (although there is one foreign language post in Google that looks to be the right question and an answer, but I can't read that language!!!) I have a 60Gb Hard disk, partitioned as follows: Note: I am a little worried about the fact that fdisk shows 240/63/7753, when on my hard disk label it says 16/63/16383, but the sizes look right. The machine is a Compaq Deskpro. [root@firewall root]# fdisk -l Disk /dev/ide/host0/bus0/target0/lun0/disc: 240 heads, 63 sectors, 7753 cylinders Units = cylinders of 15120 * 512 bytes Device Boot Start End Blocks Id System /dev/ide/host0/bus0/target0/lun0/part1 * 1 2 15088+ 83 Linux /dev/ide/host0/bus0/target0/lun0/part2 3 371 2789640 5 Extended /dev/ide/host0/bus0/target0/lun0/part4 372 7753 55807920 8e Linux LVM /dev/ide/host0/bus0/target0/lun0/part5 3 35 249448+ 82 Linux swap /dev/ide/host0/bus0/target0/lun0/part6 36 371 2540128+ 83 Linux hda1 (part1) mounts to /boot and hda6 (part 6) mounts to / I have created hda4 (part4) to be the partition that is managed as a logical volume, but when I try to pvcreate, I get: [root@firewall root]# pvcreate -v /dev/hda4 pvcreate -- locking logical volume manager pvcreate -- checking physical volume name "/dev/hda4" pvcreate -- getting physical volume size pvcreate -- device "/dev/hda4" doesn't exist I have tried this when the partition is unformatted and after a mke2fs and I get the same results. Running Mandrake 8.1 and lvm-0.9-2mdk (rpm from the Mandrake disc) Please can anyone tell me what I am missing? I have followed the mini-howto from linuxdocs and then I had a look at the howto on the sistina site, but have had no luck... Cheers, Ben Other things of relevance (?): [root@firewall root]# vgscan vgscan -- reading all physical volumes (this may take a while...) vgscan -- no volume groups found [root@firewall root]# pvscan pvscan -- reading all physical volumes (this may take a while...) pvscan -- ERROR "pv_read(): PV identifier invalid" reading physical volumes