Image Burning Failing?? Odd....

Just a few notes about the generation loss when making copies of copies:
There is virtually no loss when copying DVDs. Thats because there is no thing like RAW images (with subcodes). The error correction information (inner parity and outer parity) is always recreated when burning an image. So let's say you have extracted the image from your disc without encountering a read error. Then the data burned on the new disc is exactly (+PI and PO) the same as the data from the old disc. Below the error correction level the (analogue) data can vary, but that's uninteresting for the end user.

Thats different from copying compact disc. If there was special information embedded in the ECC/EDC fields (the fields containing the error recognition and correcgtion data) then there could have been general loss because there is only limited correction data for the ECC/EDC field itself.

Jam it back in, in the dark.

You haven't even tried looking for a verifying mode, have you?

ImgBurn -> Mode -> Verify...

There's nowhere I can't reach.

omfg...

You've to select two things:
1) the drive your disc is in
2) the image file the disc was created from

A verification process compares data, so you need at least two sources of data - otherwise you have nothing to compare. If you wanna do a surface scan (check if the error correction information is coherent with the user data) then you have got to use another program like kprobe or isobuster.

This thing is sticky, and I don't like it. I don't appreciate it.

Originally Posted by Tsunade

Sry me = newbie remember

Do only I have this impression or is everybody a newbie nowadays? It's not about being a newbie, but about using one's brain. If you're using a disc verifying tool its obvious you've got have the original image file. If you don't have the original image then you're fucked and can't verify anything (coz you've nothing to compare against). Or do you think the program (by use of some mystic force) knows what you wanted to have one your disc?

Originally Posted by Tsunade

But I did do #1, but remember I can't do #2 since I lost the original source of the file-

Oh, thats bad. Remember to not delete data if you're not 100% sure it was written correctly on disc. Let's say you write 3 DVDs and have accidentaly turned on simulation mode (but you don't know it and don't check the logs). Then you delete the burned data and two weeks later you put the discs in the drive and voila -> no data, empty optical media and the erased data is not recoverable because you already downloaded new stuff on the same drive.

Originally Posted by Tsunade

or else I'd just reburn.... anywayz thanks I got it now ^^

Hey, you said you lost the original source. Now what? How can you reburn the disc without the original data? (Or do you own a program using mystic force, eh?)

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Originally Posted by Tsunade

WELL, WELL... with DVD Decryptor I would verify a DVD by itself! And since ImgBurn is made by the same people and has almost the same functions I imagined it would do the same

No it wouldn't. I do have here the latest version of DVDDecryptor before the development stopped and this version does not have a verify mode. You can turn on 'verification' when burning an ISO but that does the same I explained before (using the ISO as reference when comparing). And AFAIK DVDD newer had any special verification mode.

Originally Posted by Tsunade

Well normally all I do is re-insert the DVD in the computer and if there's data I assume the burn worked (which always has before) and especially when Nero gives the "successfull" burning sign

Nero had some serious bugs when burning UDF filesystems and I'm sure it still has some, so I don't use it. Mastering with Nero: Yes - But burning with Nero: Never (too many bad experiences)

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