Recently I upgraded my disc burner to a LiteOn SOHW-1693S Dual Format Double Layer DVD burner. I've been trying it out but I've run into problems trying to burn DVD+R discs. Of the 50 or so tries so far (many with different discs, all from the same manufacturer), only 4 have been successful. When I try to burn a DVD+R the drive spins up, slows down, spins up again, slows down, and cycles like this, without burning any data, for about a minute before I get the error: growisofs: 5.21 growisofs ----------------------- Executing 'builtin_dd if=/home/brendon/debarchives.iso of=/dev/hdc obs=32k seek=0' /dev/hdc: "Current Write Speed" is 8.2x1385KBps. 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? 0/3449405440 ( 0.0%) @0x, remaining ??:?? :-( unable to WRITE@LBA=0h: Input/output error :-( write failed: Input/output error Physically looking at the disc after this it appears that a small track on the inside of the disc has been burned, but this seems to make no difference to the empty/full state of the disc, or its ability to be burned to subsequently. For the first few tries, at least. Each time I try to write on a disc this burned strip seems to get slightly wider. At first I suspected that perhaps I had managed to buy a set of discs that my burner just didn't like. To test this hypothesis I booted into my remnant Win98 partition, installed the burning software, and tried again to see what it would do. The disc spun up, slowed down, spun up again, perhaps it cycled like this a few times, and then began to burn the data, a good step beyond what I was able to achieve on the same disc in Debian. (I'm running Sid, BTW). My next thought was that perhaps the windows burning app gave the drive a bit longer to find the start of the disc (or whatever its trying to do when it spins up/down like that). After my attempts to find a timeout option for growisofs failed, I did a stopwatch test to see how much time it did actually take to start writing in the windows app and fail in growisofs. The result: windows starts burning in about 40 seconds, well before growisofs returns with an error (about a minute). So now I'm stumped. Do note that the problem only seems to be with DVD+R discs. CD-R, CD-RW, and DVD+RW writing is fine (although consistently slower than advertised, this is probably a different issue altogether). I have no DVD-R/RW media to test, so I have no idea if they fair any better. I'd like some ideas about what I should try and how I can go about troubleshooting this. Thanks, Brendon
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