Forum: UltraISO
Topic: Dual layer corruption
started by: mhorton
Posted by mhorton on Jul. 03 2007,21:20
I'm having a problem with Dual Layer dvds that I've narrowed down to UltraISO. (after having produced a pile of unusable dvds). Here's the scenario

I have a ISO file, 7+GB. If I burn a dual laver dvd from the source file all is great. If I manipulate the ISO file, say by adding in another file and creating a new ISO file, then when I burn this image to a dual layer dvd, I get an unreadable platter. I've done this many times with single layer dvds with no issues. I can see the status showing both layers being burned in turn.

I'm using UltraISO 8.6 and Nero to burn
Posted by xoben on Jul. 03 2007,21:43
Which version of Nero are you using?

Suggestion: As some version of Nero is buggy with burning ISO images, please mount the modified ISO by Daemon-Tools (or other third-party virtual drive program), and see if the image works or not. Then, try to burn the ISO by Alcohol 120% and try again.
Posted by mhorton on Jul. 04 2007,22:38
to xoben

It doesn't matter what version of Nero I'm using. Did you not read the problem description? It's only after I manipulate the ISO with UltraISO is the dvd corrupted, and it's not corrupted in the normal sense.

The modified ISO is completely readable with Alcohol 120, UltraISO, and Nero. It;s just that the final dvd is toast
Posted by wrayal on Jul. 05 2007,20:05
I have very little experience in this area, but my two cents: how did you make the original iso? If you make it, for example, with cdimage with the -o (optimise) flag, then when you modify it, all the LBA data gets screwed up (since it uses identical LBA offsets for identical files to save space). It may be a similar thing.

Wrayal
Posted by mhorton on Jul. 22 2007,17:02

(wrayal @ Jul. 06 2007,00:05)
QUOTE
I have very little experience in this area, but my two cents: how did you make the original iso? If you make it, for example, with cdimage with the -o (optimise) flag, then when you modify it, all the LBA data gets screwed up (since it uses identical LBA offsets for identical files to save space). It may be a similar thing.

Wrayal

I have no idea what/how the original ISO files were created. These are files I've downloaded and then want to burn to dvd. This problem has happened to me several times so I presume the sources were created differently. Does it matter how they were created? The problem is they are changed somehow by UltraIso in such a way that they become corrupted
Posted by xoben on Jul. 22 2007,21:49
Hello mhorton, please update to latest version 8.63, this problem should have been fixed now.