gal_agiese:/home/olspookishmagus/Desktop# mount /dev/sda /mnt/usbdisk
mount: you must specify the filesystem type
debian-sarge:/home/olspookishmagus/Desktop# mount /dev/sda1 /mnt/usbdisk
mount: you must specify the filesystem type
debian-sarge:/home/olspookishmagus/Desktop# mount -t vfat /dev/sda /mnt/usbdisk
mount: wrong fs type, bad option, bad superblock on /dev/sda,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

gal_agiese:/home/olspookishmagus/Desktop# mount -t vfat /dev/sda1 /mnt/usbdisk
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

gal_agiese:/home/olspookishmagus/Desktop# dmesg | tail
 I/O error: dev 08:01, sector 0
 I/O error: dev 08:01, sector 0
 I/O error: dev 08:01, sector 8
 I/O error: dev 08:01, sector 16
usb-uhci.c: interrupt, status 2, frame# 894
 I/O error: dev 08:00, sector 0
FAT: unable to read boot sector
usb-uhci.c: interrupt, status 2, frame# 481
 I/O error: dev 08:01, sector 0
FAT: unable to read boot sector
gal_agiese:/home/olspookishmagus/Desktop#