cyclic redundancy check or CRC works almost like cmos checksum when your computer is booting, expect it works in realtime and is intended for data protection. Whenever you are accessing something on your harddrive, CRC checks to see whether the data it is reading is the file you are looking for. If data is currupted to a point where it is unrecognizable, then thats a sign of damaged data or disk. It can also be a loose cable or unclean power to the HDD. CRC is very effective at protecting data integrity, so having this error is very serious. If up to me, I would look to retrieve all the data I can, and reformat. that way, it will tell me if my data was merely currupted, or is my disk drive damaged. i know the previous stated method is good, but Im not too sure if you can take out a laptop harddrive and expect to rig it to a desktop.. haha hope this helps.
i network up another computer to save data on a failing pc. you can always burn cds.
I have once reinstalled windows over my existing installation, and it deleted everything in the documents folder. i suggest moving all files to another folder before attempting this method.
[root@root root]$ su