I have had the exact same experiences, except here are my problems (with some other random info):

--> I'm using DVD-RW media, which burn & verify OK under OS X.

What I did:

dvd+rw-format -force /dev/cdrom
mkisofs -r -v -J -V data -o file.iso data_dir
growisofs -Z /dev/cdrom=file.iso

The burn /seemed/ to go OK, but when I tried to verify it ...

1. cmp /dev/cdrom file.iso
  --> got an I/O error
2. find /mnt/cdrom -type f -print0 | xargs -0 md5sum >| ~/digest.disc
  --> got an I/O error

I was hoping that upgrading the firmware of the unit might help out, but ... not sure! Again, it seems I can burn things just fine under OS X with the *exact* same media. I've tried it with 2 DVD-RW discs.

Anyone know why I might get an I/O error ... bad burn? media? read/dma settings?

Doug


On Jan 30, 2004, at 10:15 AM, Timothy A. Chagnon wrote:


I just got a lite-on dvd burner over the holidays, and it took me a
while to get it going. At first I tried using dvdrecord (branch off
cdrecord) but it was giving me errors. The growisofs program that comes
with dvd+rw-tools works though to make the filesystem and burn. If it's
a dvd+rw you need to use dvd+rw-format to format the disc once before
the first burn. I haven't yet gotten dvdrecord to work yet, but
growisofs works for my usage.

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