2 replies to this topic

[Cherry T.]

Out of the blue, I am encountering a number of problems in burning DVDs using Toast 5.1.3 on Mac OS10.2.8 with mac internal CD burner (Pioneer??).

First question, in really simple and basic computer language, can anyone tell me how I can identify the problem file in a failed verification? I am buring a 3gb folder containing many sub-folders and files (a variety of Quark Xpress, Photoshop and Illustrator files), it fails at the verification stage, giving the following error message:

"Sector 494272 unreadable. Verification failed"

I presume one file or a folder has corrupted causing the problem and I would like to either resave the file, or delete it and burn the reaminder. How do I identify this sector as a file?

Other problems: I am getting random "Sense Key" error messages which I understand relate to hardware. The error messages are:
"Sense Key=Medium error, Sense Code=0x11, 0x05, L-EC Uncorrectable Error" or
"Sense Key=Medium error, Sense Code=M 0x11, 0x01, Read Retries exhausted"

Can someone tell me what these message mean? What sort of fix do I need? Why would the messages appear randomly, after no new changes to my system or softwre and only on DVDs (CD burning works fine).

Thanks in advance

CT

[tsantee]

My guess is your disc burner is dying. You might try a laser-cleaning disc to see if that helps with the issue. A sector is referring to a part of the disc, not to the data, so there either is a flaw on the disc itself or a flaw writing to the disc. New high-speed media is not well supported by older drives. If you have a friend who has a Firewire drive (and your Mac has a Firewire port) borrow that drive as a test. I presume you've tried burning at the slowest available speed.

[Cherry T.]

tsantee, on Nov 6 2006, 08:29 AM, said:

My guess is your disc burner is dying. You might try a laser-cleaning disc to see if that helps with the issue. A sector is referring to a part of the disc, not to the data, so there either is a flaw on the disc itself or a flaw writing to the disc. New high-speed media is not well supported by older drives. If you have a friend who has a Firewire drive (and your Mac has a Firewire port) borrow that drive as a test. I presume you've tried burning at the slowest available speed.

Many thanks for the reply tsantee. Always good to learn more.

Will try the laser cleaning disc. As I am having the verification problem burning the same folder whether its stored on my main hard disc, or 2nd internal backup disc seems to point to a drive problem.

Thanks again

CT