Burning iso images with wodim loses 2048 bytes at the end

Posted by Grumbel on Super User See other posts from Super User or by Grumbel
Published on 2010-06-21T23:38:28Z Indexed on 2011/01/13 22:55 UTC
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ubuntu

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iso

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images

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verification

If I burn an iso image with:

wodim -data  dev=/dev/scd0 in.iso

and then read it back out with:

dd if=/dev/scd0 of=out.iso

The resulting files are not identical, out.iso is 2048 bytes shorter then in.iso. What is going on here and how can I fix it?

Using Ubuntu 10.04 and Wodim 1.1.10

PS: dd always ends with an Input/output error, not just with this CD, but with all of them. I think its just a limitation of dd, but an explanation why it happens and how to avoid it would be welcome as well.

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