Need Tech Help -- Cyclic Redundancy check?

Thorg Frostfist · Post by **Thorg Frostfist** » Tue Feb 20, 2007 8:06 am

So recently, my hard drive was damaged in transportation, and I need to replace it. I am trying to back up all my files that are here, but I get a problem with some of them. In trying to transfer some movies/music, I get an error that says "Copy failed, Cyclic redundancy check"

Now, I have listened/watched the files through completely or partially, and they work fine, they just wont move, or copy, or zip. Does anyone know what I can do to transfer my files without this stupid error? I googled it and supposedly it is an error when reading from a CD/DVD when the disk is damaged. As I said, my files work.

Post by **Ddrak** » Tue Feb 20, 2007 8:36 am

Do you just want the files, or do you want to make a backup of the bad disk onto a new one?

The error is caused by a part of the file being bad (usually 512 bytes). Playing them through partially won't necessarily hit the bad part so you can't really tell if the file is bad or not that way. Any sort of recovery is at best going to leave a "hole" in your music/video file where you will either get silence, static or playback will break with an error.

Dd

Fallakin Kuvari · Post by **Fallakin Kuvari** » Tue Feb 20, 2007 9:53 am

Defrag, imo.

Bahd Zoolander · Post by **Bahd Zoolander** » Tue Feb 20, 2007 11:30 am

Defrag will most likely fail too. The hard disc is reporting an error when trying to read one or more sectors. Hard drives have some space set aside for the drive to remap bad sectors, so if you're repeatedly getting this error it's possible the drive can't remap the bad areas.

Spinrite (http://www.grc.com/sr/spinrite.htm) is very good at recovering data when you have this sort of problem. If you need to get the files off it's probably worth a try, but you can expect some data corruption.

Kulaf · Post by **Kulaf** » Tue Feb 20, 2007 11:30 am

You really don't want to defrag a bad drive. That is like playing russian roulette.

Bahd Zoolander · Post by **Bahd Zoolander** » Tue Feb 20, 2007 11:35 am

chkdsk /R might work also, but it's not the best tool in the world.

Fallakin Kuvari · Post by **Fallakin Kuvari** » Tue Feb 20, 2007 12:09 pm

Kulaf wrote:You really don't want to defrag a bad drive. That is like playing russian roulette.

Whats better than gambling against a gun?

Clearly its death.

Thorg Frostfist · Post by **Thorg Frostfist** » Tue Feb 20, 2007 12:54 pm

I'm trying to transfer the files to a backup slave. I would like the files, as they were anime and music files that were hard to obtain. I have watched/listened through them in their entirety, and nothing seems wrong, so it must just be a couple of bites at the end of the file.

Post by **Ddrak** » Tue Feb 20, 2007 11:15 pm

Stuff I can see on the internet:

http://kutinsoft.com/ProductInfo/DurableCopyInfo.php

Failing that I could probably write something pretty fast if you really want it...

Dd