To see what type of filesystems you have just type
cat /proc/mounts
This will give you something like, you can see its listing ext3 and ext2 where appropriate. The others are virutal filesystems you dont need to worry about.
/dev/root / ext3 rw 0 0
/proc /proc proc rw 0 0
none /dev/pts devpts rw 0 0
/dev/sdb2 /home ext3 rw 0 0
none /dev/shm tmpfs rw 0 0
/dev/sda1 /mnt/sda1 ext2 rw 0 0
/dev/sda6 /mnt/sda6 ext2 rw 0 0
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