Hi, I've seen the LVM stuff come in the last few releases but being used to just mounting my pata disks separately where I want have been able to get away with ignoring it - until now. The machine has 2 PATAs, one is 20G and the other 500G. During the installation I took all the default partitioning settings and installed it on the 20G. After installation I created a /data folder and under that Vol1, Vol2 etc (there may be more PATA's later). As I say I know this might seem clunky now but I have been successfully doing it with Redhat since pre-Fedora days. So I used "mount /dev/sdb1 /data/Vol2" fine, that shows the 500G in Vol2, but trying "mount /dev/sda2 /data/Vol1" gives

mount: unknown filesystem type 'lvm2pv'

fdisk /dev/sda shows:

Disk /dev/sda: 20.0 GB, 20020396032 bytes
255 heads, 63 sectors/track, 2434 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xed07ed07

Device Boot Start End Blocks Id System
/dev/sda1 * 1 25 200781 83 Linux
/dev/sda2 26 2434 19350292+ 8e Linux LVM

df -h shows

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
18G 11G 6.6G 61% /
/dev/sda1 190M 19M 162M 11% /boot
tmpfs 252M 708K 251M 1% /dev/shm
/dev/sdb1 459G 371G 66G 86% /data/Vol2

I know the linux boot + core files are on /dev/sda1 but as you can see I can't see a way of getting at the rest of that disk (/dev/sda2) - or is it being used "automatically" by LVM and I'm not understanding it properly? Thanks...

Try pvscan in conjunction with mount. ie

#pvscan

and

#mount

to see what's what