My book external usb problem

[zoe]

hello
i have a WD My book but i have a problem when i try to mount it.using :
dmesg | grep USB
can't find it when it's plugged in but i can see ,other plugged hardware(keyboard,mouse etc)
any ideas?Does the gentoo kernel has My Book support because i can't find it
thanks in advance

[zoe]

also something strange(for me at least )
when i edit my fstab with
/dev/sda1 /mnt/flash vfat users,umask=1000,rw,noauto 0 0
i can see my documents of My Book hard disk but when i deactivate and enable it again i can't see anything
so please,any ideas?

[zoe]

zoe-gen ~ # fdisk -l /dev/sda1

Disk /dev/sda1: 250.0 GB, 250056705024 bytes
255 heads, 63 sectors/track, 30400 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

This doesn't look like a partition table
Probably you selected the wrong device.

Device Boot Start End Blocks Id System
/dev/sda1p1 ? 119512 153402 272218546+ 20 Unknown
Partition 1 does not end on cylinder boundary.
/dev/sda1p2 ? 82801 116350 269488144 6b Unknown
Partition 2 does not end on cylinder boundary.
/dev/sda1p3 ? 33551 120595 699181456 53 OnTrack DM6 Aux3
Partition 3 does not end on cylinder boundary.
/dev/sda1p4 * 86812 86813 10668+ 49 Unknown
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order