It says nothing. Not even an error.
# fdisk -l /dev/sda #
Have you tried mounting it like this ...
mount -t vfat /dev/sda /mnt/whatever
or
mount -t vfat /dev/sda1 /mnt/whatever
How many scsi devices do you have in your system? Maybe it's not sda...
try fdisk -l without giving a device to it.
Alex
