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I'm running Ubuntu 12.04 on a Lenovo IdeaPad Z580 and have been using the default Backup application with an external SATAIII hard drive. However, when I connected it via USB today, it didn't show up in the file browser like usual, and the Backup application doesn't recognize that it's connected.

I remember bumping the HDD a little harshly the night before, so I'm hoping I didn't do something totally evil to it. Maybe it's not recoverable, but if it's not I'd like to know. I'm in the midst of writing a thesis, and backing that up via the internet is a bit annoying...

I like to think of myself as at least competent with these sorts of things, but after browsing other forum posts and solutions, nothing has worked so far to get things running as usual.

Some of this may be useful:

john@euclid:~$ sudo fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xcdbeaa35

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1  1465149167   732574583+  ee  GPT
Partition 1 does not start on physical sector boundary.


john@euclid:~$ df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/sda2      ext4      680G   81G  565G  13% /
udev           devtmpfs  3.9G  4.0K  3.9G   1% /dev
tmpfs          tmpfs     1.6G  924K  1.6G   1% /run
none           tmpfs     5.0M     0  5.0M   0% /run/lock
none           tmpfs     3.9G  612K  3.9G   1% /run/shm
/dev/sda1      vfat       94M  2.1M   92M   3% /boot/efi


john@euclid:~$ lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 004: ID 13fd:0840 Initio Corporation 
Bus 003 Device 002: ID 5986:0295 Acer, Inc 
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 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 046d:c52f Logitech, Inc. Wireless Mouse M305
Bus 001 Device 004: ID 0bda:0139 Realtek Semiconductor Corp. 
Bus 001 Device 005: ID 0489:e042 Foxconn / Hon Hai

All of the above commands were run while the HDD was on, connected to power, and connected to my laptop via USB.

I wish I could remember how I originally formatted the HDD, but it was at least a year ago and I didn't write down what I did...

With my limited knowledge about mounting, to me it looks like it is mounting fine, but maybe not in the right place? /boot/efi seems like a weird place to me...

Any advice?

EDIT: Sorry guys, I wasn't paying attention at all to the storage space listings... Whatever I had been thinking about mounting at /boot/efi and about /dev/sda was wrong because the available space never matched what I should have expected (320G). I've concluded that the hard drive was actually fried, as suggested, and have since gotten a replacement.

share|improve this question
Normally, /dev/sda is your internal hard disk; external disks will be /dev/sdb, /dev/sdc, or higher. You may be able to learn something by trying to access these devices with fdisk, gdisk, parted, or other tools. It sounds likely that the bump you gave it may have physically damaged the disk, though, so don't get your hopes up. –  Rod Smith Feb 8 at 1:46

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