how to check file system?

I surely surely hope someone knows the answer of my question.

I have to HDDs on my desktop, old smaller drive with all my files is fedora core 2
and the new big drive just installed fedora core 13. I think they have the same file system but I can not mount the big drive when boot using the first drive using
mount -t ext3 /dev/sdb2 /media/800GB gave error wrong file system
same as ext4.

info about my two disks are

Disk /dev/sda: 250.0 GB, 250000000000 bytes
255 heads, 63 sectors/track, 30394 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 10199 81923436 7 HPFS/NTFS
/dev/sda2 10200 10212 104422+ 83 Linux
/dev/sda3 10213 30394 162111915 8e Linux LVM

Disk /dev/sdb: 800.1 GB, 800166076416 bytes
255 heads, 63 sectors/track, 97281 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sdb2 64 97282 780898304 8e Linux LVM

this is basically a duplicate post http://www.linuxforums.org/forum/lin...le-system.html where i've already told you how to mount LVM volumes

Duplicate threads/posts are not allowed. It is against Forum Rules. I would suggest you to continue at your other thread and refrain from starting duplicate threads.