Question

The device, \Device\CdRom0, has a bad block.

Asked by: GegH

My company burns dvds as an archive of completed projects. When trying to copy back data from some of these discs we get a 'cyclic redundancy error' looking at the event viewer we get the above message.
I have tried slowing the speed of the burn with a little success (seemingly).
We have an old server on its last legs (using SATA drives), could it possibly be the slow speed of the server/network causing the issue? may it even be long filepath names? or dots in the folder names? Maybe all of the above?
I am going to be asked why this is happening and need to give them some answers even if it is for them to get a new server/faster network.

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Asked On
2009-08-14 at 08:14:39ID24653196
Topics

Computer Servers

,

Removable Backup Media

,

Storage Technology

Participating Experts
3
Points
250
Comments
9

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Answers

 

by: xxdcmastPosted on 2009-08-14 at 08:21:40ID: 25098991

Usually I have seen this error message when the laser on the drive is dirty/going bad. It may be that you need to run a cleaning disk through the drive or possibly replace it.

I would think that with todays servers/writers you shouldnt really have to slow down the writing to have it work correctly. If you do end up replacing the drive I would go with something that has a large buffer when writing. It has been several years since I bought one but I was always very impressed with Plextor drives.

 

by: tgerbertPosted on 2009-08-14 at 08:22:34ID: 25099009

I doubt that it's the overall speed of your server, more likely a bad DVD burner, drive or cable.

 

by: GegHPosted on 2009-08-14 at 08:47:55ID: 25099352

We have a new external DVD, and every machine has a dvd burner. It seems to be regardless of the machine doing the burning. I have to say our network is a dog at times. at certain periods all machines seize up whilst the server catches up with itself.

 

by: tgerbertPosted on 2009-08-14 at 08:56:52ID: 25099476

Regardless of how slow your network is, I don't think it'd result in bad-block error messages.  Maybe just scratched discs.

 

by: GegHPosted on 2009-08-14 at 08:59:53ID: 25099523

Discs are sqeaky clean, straight out of the box. As a test i have burnt a disc, gone straight back to it to copy off and get the message, they have not even been put in in a case or on a spindle. This is whats so confusing, New drive, new disc, old network.

 

by: tgerbertPosted on 2009-08-14 at 09:11:33ID: 25099682

I could be wrong here, but I'm 99% sure the bad-block message results from errors during the transfer of data from the drive to system memory.

I occaisionally read CD's across a dial-up VPN, and slow as molasses in winter it may be, but no bad-block events logged.

 

by: GegHPosted on 2009-08-14 at 09:14:30ID: 25099720

OK. That's the confusing thing. I have bad block errors in the past, and the cyclic thing too, but never as frequent as i have since i came to this job.

 

by: dbruntonPosted on 2009-08-14 at 23:07:20ID: 25104340

You can try a couple of different burner applications.

Either IMGBurn http://www.imgburn.com/
or CDBurnerXP http://cdburnerxp.se/

Both are free and excellent.  Good tutorials can be found on both sites.

 

by: GegHPosted on 2009-08-18 at 03:50:54ID: 31616979

cdburnerxp works a treat. Tried it on a dvd i have been having problems with. Used copy disc and it copied straight away, no issues, the resultant disc works great.

20120131-EE-VQP-002

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