Red Hat Bugzilla – Bug 109514
problems burning DVDs (and CDs) using dvd+rw-tools and cdrecord -- possible sg driver issue?
Last modified: 2007-11-30 17:10:33 EST
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Description of problem:
I am wondering if any 'growisofs' users have upgraded their distros to
Fedora 1.0. I have a Sony DRU-510A drive that I had working under Red
Hat9.0. After upgrading to Fedora 1.0, I recompiled the dvd tool
chain, just to ensure library compatibility. But neither the
RH9-compiled nor the Fedora-compiled versions of 'growisofs' have been
producing reliable burns on Fedora 1.0. I don't end up with any
errors during the burn, but reading back the burned disk gives me
input/output errors. Is anyone out there experiencing similar problems?
PS: I'm almost suspecting the ide-scsi layer, but I have no evidence
to support this. The reason I'm suspicious is because I can only burn
CD-Rs in my Plextor 48x drive in RAW mode (using 'cdrecord'), or else
I also get I/O errors on read-back. Is there some known issue with
the 'sg' driver?
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Create an ISO image 4700372992 bytes in size.
2. growisofs -Z /dev/scd1=1.iso
3. md5sum 1.iso /dev/scd1
Actual Results: 78453c9bfc9f84632e1351dc1ef1108a 1.iso
md5sum: /dev/scd1: Input/output error
Expected Results: 78453c9bfc9f84632e1351dc1ef1108a 1.iso
Oops! I have to issue a retraction. It looks like my problems can be
blamed on two consecutive occurrences of bad DVD media. I was
reluctant to burn more disks due to the high price of the media, and
was hoping to hear something regarding this from the community. The
coincidence of the bad burns with my upgrade to Fedora made the bad
media hypothesis easy to dismiss. I apologize for the haste with
which I filed this bug report.
This still does not explain why 'cdrecord' only works for me in RAW
mode, but perhaps that's best described in another bug report.