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Blu-Ray Archives - Verification Error Every Time On First Disc

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Trying to back up an old Avid Media Composer project onto BD-Rs. Project file, media, etc.

 

I have Toast Titanium 10.0.8. It would be a four-disc spanned burn. Using a Pioneer BDR-205 in an external FireWire enclosure from OWC. I don't recall having similar problems before, I've successfully burned a bunch of projects with this combo.

 

The error returned is a sector/byte mismatch during verification, on every disc. Different sectors, different bytes, but an error every time nonetheless, I'd say each one has been before the 20% mark.

 

Any idea where to start checking for fixes? Any help is greatly appreciated.

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I have now tried it on a different drive, different FireWire cable, different media. Same error.

 

I have also used the Apple Hardware Test, checked the RAM using its extended test, and it came out clean.

 

Any ideas?

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I don't have any suggestion to help you. However, verification errors don't always mean there is a problem with the burned disc. Sometimes it can happen because something changed in the source folder (possibly to an invisible file) after the disc is burned so they no longer match. There may be other reasons as well. I realize this is no help because there is no way to know for certain. There is a compare option in the Toast Utilities menu that may be useful to you here.

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I don't have any suggestion to help you. However, verification errors don't always mean there is a problem with the burned disc. Sometimes it can happen because something changed in the source folder (possibly to an invisible file) after the disc is burned so they no longer match. There may be other reasons as well. I realize this is no help because there is no way to know for certain. There is a compare option in the Toast Utilities menu that may be useful to you here.

 

Thanks. I just tried again, rebuilding the burn from scratch, reselecting all files, making sure I didn't have any invisibles in any folders. I tried burning to a 2x BD-RE. Same error, this time around 65% completion.

 

I realize the disc may very well be fine, but I don't think that's a chance I want to take without knowing for sure, as this is the primary backup of a finished project and all of its raw media. I've ruled out the drive, the FireWire cable, the media, and the RAM. Not really sure what to do next.

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I have tried another method - create a Disc Image with the files, to a different drive, and then burn that.

 

I can't burn the mounted disc image correctly, because apparently one can't span a disc image. So, I opened up the mounted image, and pulled all the files from it to make a new data disc.

 

Being in a disc image, it would seem that the image would be locked, so no files, even invisible, would be written to or from the image. This would therefore rule out yet another possibility.

 

The files went through the first disc successfully, but then had mismatches on the second disc, twice. Therefore, three coasters for the unusable set, and I gave up there.

 

Anything else to try to isolate? It seems that the possibility of files changing along the way has been ruled out.

 

I'm on 10.0.8 - I know 10.0.9 was released, but looks like it's been pulled. I'm still on Snow Leopard, so I don't know how much the update would matter anyway.

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I have tried another method - create a Disc Image with the files, to a different drive, and then burn that.

 

I can't burn the mounted disc image correctly, because apparently one can't span a disc image. So, I opened up the mounted image, and pulled all the files from it to make a new data disc.

 

Being in a disc image, it would seem that the image would be locked, so no files, even invisible, would be written to or from the image. This would therefore rule out yet another possibility.

 

The files went through the first disc successfully, but then had mismatches on the second disc, twice. Therefore, three coasters for the unusable set, and I gave up there.

 

Anything else to try to isolate? It seems that the possibility of files changing along the way has been ruled out.

 

I'm on 10.0.8 - I know 10.0.9 was released, but looks like it's been pulled. I'm still on Snow Leopard, so I don't know how much the update would matter anyway.

I'm sorry but this is beyond my knowledge of Toast's inner workings. It could be a bug in Toast but I have no way of verifying that. The fact that it is repetitive and occurs regardless of what you do to eliminate the chance makes me believe it is a Toast verification problem rather than a file integrity problem. But my assumption is no help. It appears you can't do the spanning without verification errors which means you either should avoid disc spanning or turn off verification.

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I'm sorry but this is beyond my knowledge of Toast's inner workings. It could be a bug in Toast but I have no way of verifying that. The fact that it is repetitive and occurs regardless of what you do to eliminate the chance makes me believe it is a Toast verification problem rather than a file integrity problem. But my assumption is no help. It appears you can't do the spanning without verification errors which means you either should avoid disc spanning or turn off verification.

 

Not that I intend for it to be a long-term workaround, but I have successfully burned the four-disc set by moving the entire contents of the burn to another computer, and using Toast 9.0.7 to burn the files. So, it's a version issue, or something with my computer. Very strange indeed.

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I have updated to 10.0.9. The problem persists, not only with Blu-Ray, not only with multi-disc sets. It is now happening on individual DVDs.

 

I have since replaced the failing battery in my MacBook Pro, and the problem does persist.

 

In essence, Toast is useless to me right now.

 

Ideas?

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Update - After a number of consecutive successful BD-R burns, I think I've squashed the problem. It does indeed seem to have been bad RAM. Apple's hardware test didn't catch it originally, but I used another application called "MemTest," which did reveal errors. Memory got promptly replaced under OWC's lifetime warranty, I was up and burning again inside of two days, and haven't had a failure since. Therefore, really scrutinize that RAM, even if Apple Hardware Test green-lights it.

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