USB hard drive problems

[jaciii]

I have a usb hard drive that does not mount. I used fdisk option c to set up the partition as win32. When I try to mount it i get the msg. mount: wrong fs type, bad option, bad superblock on /dev/sda1 or too many monted file systems. I use mount -t -vfat /dev/sda1 /mnt/sda1. The dmesg shows:

hub.c: new USB device 00:07.2-2, assigned address 2
usb.c: USB device 2 (vend/prod 0x4b4/0x6830) is not claimed by any active driver
.
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
usb-uhci.c: interrupt, status 2, frame# 222
usb_control/bulk_msg: timeout
scsi2 : SCSI emulation for USB Mass Storage devices
Vendor: Maxtor 6 Model: E030L0 Rev: 0 0
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi disk sda at scsi2, channel 0, id 0, lun 0
SCSI device sda: 60058656 512-byte hdwr sectors (30750 MB)
sda: sda1
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
USB Mass Storage support registered.
usb-uhci.c: ENXIO 80000280, flags 0, urb c9cc72b0, burb c9cc7430
usb-uhci.c: ENXIO 80000280, flags 0, urb c9cc72b0, burb c9cc7430
usb-uhci.c: ENXIO 80000280, flags 0, urb c9cc72b0, burb c9cc7430
usb-uhci.c: ENXIO 80000280, flags 0, urb c9cc72b0, burb c9cc7430
usb-uhci.c: ENXIO 80000280, flags 0, urb c9cc72b0, burb c9cc7430
usb-uhci.c: ENXIO 80000280, flags 0, urb c9cc72b0, burb c9cc7430

What do I need to do to get the usb drive recognized as a vfat drive under Knoppix? Have I set it up wrong under fdisk?