One thing that caused me not to suspect the media is that we have an
identical drive at the office, also running on RH Linux 7.0 (although on a
dual-cpu box), and it seems quite happy to burn these BASF disks - in fact,
the disks I've been trying to burn onto came from the same box as one or two
others that I've used successfully at the office.
Just in case, though, this was the reason I was using the -dummy option; I
was attempting to remove poor media as a possible cause for failure. I
guess you're telling me that the drive may have difficulty tracking a disk's
geometry even when the laser is turned off. This hadn't occurred to me, but
it makes sense. I'll try to get my hands on a few better-quality disks and
see what happens.
Thanks, Dave...
Jim
-----Original Message-----
From: Dave Platt [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 02, 2001 4:12 PM
To: [EMAIL PROTECTED]
Subject: Re: Unpredictable Failures Burning CD-R
My own hunch would be that you're trying to burn at a rate
greater than that which can actually be supported reliably
by the blank CD-R media you are using - the CD-RW drive
is having trouble tracking the disc, and it's kicking back
the bad-logical-block error when it loses the track.
You're probably facing two issues here:
- CMC Magnetics is one of the second- or third-tier CD-R
manufacturers. They don't have a reputation for the highest
disc quality.
- 80-minute CD-R discs are inherently more difficult to burn
and play back than 74-minute discs, because their inter-track
pitch and inter-pit spacing has been reduced to the lower
limits permitted by the Red/Orange Book specs.
I'd suggest using 74-minute / 650 MB blanks whenever possible,
and trying a brand with a better reputation for reliability.
I've had good luck with Kodak, and with the 74-minute TDK blanks
available in 50-disc cakeboxes at Price Costco.
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