From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: From: "Russ Cox" To: 9fans@cse.psu.edu Subject: Re: [9fans] Errors Writing To CD-R MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Mon, 22 Apr 2002 11:32:05 -0400 Topicbox-Message-UUID: 79b6f0d4-eaca-11e9-9e20-41e7f4b1d025 Most of the CD write errors are buffer underrun in various disguises. I eventually had to add a command to the cdfs ctl file to use write speeds below the maximum (the default on most drives) so that we could keep up. That change will be in the new distribution (it's rather hard to separate out or I'd post it). In the mean time, if you can use DMA transfers that might help you keep up. Try echo dma on >/dev/sdD0/ctl replacing sdD0 with your cd drive. Then cat /dev/sdD0/ctl to see if the dma number isn't 0. Russ