Was using Ubuntu 12.10 (on a ThinkPad T430i), things started jumping and freezing so I shut down.
When I try to boot up, it always fails. Trying to boot in recovery mode, I get errors such as "I/O error (dev sda)", "mounting /dev on /root/dev failed: no such file/directory." I ran a diagnostic to check for sector errors and there were a lot (e.g. sector error 5936256; however I did not tell my Lenovo machine to try and fix the errors). I can be more specific if you tell me what to post, but the amount of errors I'm getting is vast.
Windows 7 will not boot either.
I'm guessing there's something fatally wrong with the hard-drive. So my primary question is: how can I back-up my data before I try any fixes? There are numerous files I had not yet backed up. My secondary question is: what steps should I take to try and diagnose and fix this problem?
Thank you enormously in advance.
UPDATE: I booted up with Ubuntu Live CD. I couldn't get fdisk to run, but when I tried to mount 232 GB File System I get the following error:
Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda5, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so
When I run disk utility on my hard disk, I get: Current Pending Sector Count, Normalized 59, Worst 59, Threshold 0, and Value 1160 Sectors. Screenshot of SMART Data is here: http://www.foopics.com/show/01f6dc2a4e47915367be5300b57500f1
So that looks bad...Do I have any option besides making a clone of the File System?