Re: cyclic redundancy check

On Sat, 31 Dec 2005 04:59:25 -0000, DAVID MCDONALD wrote:

> I'm trying to copy files from a DVD +R to my hard disk and a few files cause
> a cannot copy error which shows cyclic redundancy check as the cause.
>
> Is there any way round this?

Many possible reasons for CRC errors:

-Files were not successfully/completely transferred to DVD. If there were
errors when the files were burned, the copies are no good. Try burning
again and use the Validate/Verify option in your burning software to test
the integrity of the copied files.

-Poor quality media: Burning may seem to go fine but the read operation
fails. Or you find yourself burning a lot of coasters before getting a
"successful" burn. Better quality media produces more reliable results for
burning and reading.

-Dirty or damaged DVDs. There are cleaning kits for discs and for drives.
Sometimes just blowing a bit of canned air will remove an accumulation of
dust in the drive tray. CAUTION: Do not do this when PC is powered. Canned
air if sprayed too densely will cause an accumulation of moisture. Moisture
and electric power do not mix well. Spray lightly - a little goes a long
way.

-Dirty or damaged drive: Laser not functioning at full capacity and cannot
read the files. There is usually a corresponding "bad block" message in
Event Viewer for the drive doing the reading.

--
Sharon F
MS-MVP ~ Windows Shell/User
.

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