what does varifying disk mean when burning a dvd?

[jayd]

when i burn a dvd with toast , after its done it says dvd finished. then it says eject or varify. what does varifying the disk do? can i just hit eject and be done with it?

 

[iMeowbot]

(That's verifying.) It is reading the disc back to make sure it was written correctly, so that you aren't surprised by errors (if any) later.

 

[jayd]

thanks.

 

[Bill Gates]

I'd just like to add that although errors should be infrequent and therefore making verification rather unnecessary, my particular computer happens to be very picky when it comes to acceptable writeable and rewriteable media, and occasionally does fail verification.

 

[Father Jack]

I always let Toast verify after burning, although happily I have never had a failure.

FJ

 

[wrldwzrd89]

I always let Toast verify after burning, although happily I have never had a failure.

FJ

I let it verify after burning too... and, unlike you, I've had several verification failures. My iMac is quite picky about what discs it'll burn successfully. I'm not sure if my MacBook Pro is as picky.

 

[jayd]

if a dvd movie fails verification and you try to re burn it because its a rewritable, will any quality be lost?

 

[Bill Gates]

if a dvd movie fails verification and you try to re burn it because its a rewritable, will any quality be lost?

If you are copying a DVD movie whether on-the-fly or not, no quality degredation should occur. The same should be true for any compilation, since the source is what determines the quality of a digital copy, not the number of burns. This is speaking on short-term quality of course, since discs can degrade over time resulting in errors. That disc is of lower quality than the original since it failed verification, and thus is not 1:1. If you try burning another copy, perhaps at a lower speed, and verification passes, it is therefore 1:1 and of equal quality in relative terms.

 

[LimeiBook86]

So this warning isn't really true?

 

[Bill Gates]

So this warning isn't really true?

Of course it's true. If you stop burning the disc in the middle then the data already written will be incomplete.

 

[LimeiBook86]

Of course it's true. If you stop burning the disc in the middle then the data already written will be incomplete.

Look closely though, the data has already been written, it's just verifying.

 

[reflex]

Look closely though, the data has already been written, it's just verifying.

That message just means that you won't have completely verified the disc. So if there are any errors present, you won't know about. But the disc has indeed already been written.

 

[LimeiBook86]

That message just means that you won't have completely verified the disc. So if there are any errors present, you won't know about. But the disc has indeed already been written.

Exactly. It's a nice feature, and I guess it would be really useful if say you were burning 50 or more discs and it gave you an error. It would possibly tip you off that the source files were bad...or your media is garbage

 

[PYR0M310N]

If you have a higher burning speed you tend to get more errors during verification.

 

[Bill Gates]

Look closely though, the data has already been written, it's just verifying.

Ah, I see it. Oops.