DVDs Not Passing Verification

nobody special · December 12, 2004 8:54AM

I've tried burning some backup files to DVD, but after many, many attempts, the disks always fail verification. I've tried burning from the Finder and using Toast 6 with the same result.

What steps should I take to diagnose and repair my DVD drive before I take it in to be looked at by a professional?

giaguara · December 12, 2004 10:15AM

they fail the verification of the disc burning?

if so, do they however mount properly? can your read the data after the failed verification? if the data is correct, ignore the error.

nobody special · December 12, 2004 10:28AM

Yes, they fail the verification of the disk burning. How do I test whether the data is readable? There are 4.3GB of files, and it's impractical to open everyone.

whisper · December 13, 2004 3:56PM

I used diff when I had that problem. It took awhile (maybe 30-45 min), but you can do other stuff while it's thinking about it.

nobody special · December 13, 2004 5:28PM

What is diff?

stoo · December 13, 2004 6:54PM

"diff" is a command line utility, that can be run from the terminal. It compares the differences between files. A better (quicker) test would be to use the "md5sum" command in the terminal, and compare the numbers it give for the source and burned files.

I'll have a think about how this should work.

whisper · December 13, 2004 9:54PM

Quote:

Originally posted by Stoo

"diff" is a command line utility, that can be run from the terminal. It compares the differences between files. A better (quicker) test would be to use the "md5sum" command in the terminal, and compare the numbers it give for the source and burned files.

I'll have a think about how this should work.

Yep, that would work too, as long as the command has a recursive option. Good idea.

DVDs Not Passing Verification

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