On Wed, 14 Oct 2009, Warren Block wrote:

My data backups to DVD use mkisofs to build ISO9660 DVDs like so:

mkisofs -J -joliet-long -r -hide-rr-moved -graft-points dir1 dir2 dir3

and then piped into cdrecord. However, I found a problem with one file that casts some doubt on the whole process. The file is named img_0185-6x4crop.jpg and is 3,309,906 bytes. On the hard drive, it reads fine.

The filename is present on the DVD, but the file always gives a read error:

# file img_0185-6x4crop.jpg
img_0185-6x4crop.jpg: ERROR: cannot read `img_0185-6x4crop.jpg' (Input/output error)

It's not a one-time error; every DVD always has the same problem. What is going wrong? A poison filename?

Following up: growisofs with the same parameters has no problems with that file.

-Warren Block * Rapid City, South Dakota USA
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