USB移动硬盘mount不出来，帮忙啊

hnbc

我的移动硬盘是数码相机，方正的
用fdisk -l /dev/sda
显示出错
usb-uhc1.c : interrupt,status 3,frame# 625
scsi device(ioctl) reports illegal request.
scsi device sda: 16384 512-byte hdur sectors (8MB)
sda: test WP failed, assume write Enabled
I/O error:dev 08:00, sector 0
unable to read partition table

怎么弄啊