My 1 TB external hard disk is not detected by Ubuntu 12.10.

**lsusb:**



Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub

Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 003: ID 0c45:6409 Microdia Webcam

Bus 002 Device 003: ID 046d:c03d Logitech, Inc. M-BT96a Pilot Optical Mouse

Bus 002 Device 004: ID 046d:c315 Logitech, Inc. Classic New Touch Keyboard

Bus 002 Device 007: ID 059b:0070 Iomega Corp. 







**sudo fdisk -l:**



Disk /dev/sda: 640.1 GB, 640135028736 bytes

255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0006ec0d



   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *        2048  1242566655   621282304   83  Linux

/dev/sda2      1242568702  1250263039     3847169    5  Extended

/dev/sda5      1242568704  1250263039     3847168   82  Linux swap / Solaris









**sudo blkid:**



/dev/sda1: UUID="9d449e79-8917-497f-aa4c-59fb3bcb21ee" TYPE="ext4" 

/dev/sda5: UUID="ea2d407e-0b84-4d6e-9004-5b3536a899fd" TYPE="swap"