mount -t vfat /dev/hda2 /mnt/windows -o ro
FAT: bogus logical sector size 0
VFS: Can't find a valid FAT filesystem on dev 03:02.
mount: wrong fs type, bad option, bad superblock on /dev/hda2,
       missing codepage or other error
       (aren't you trying to mount an extended partition,
       instead of some logical partition inside?)
       In some cases useful info is found in syslog - try
       dmesg | tail  or so