I'm having a problem with LVM. From what I can tell the mapper is already used. When I try to make a LVM initialize the disk I get an error it's already mounted. Which it is.
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
I have 2 x 500 GB drives and want to make them into one drive. Why can't I use use Group 2 or something?