I didn't know about hdparm. After using apt-get to install the package it reported there was no /dev/hdd. This led me to review the kernel options as I had recompiled it many times recently trying to get a wireless usb adapter to work. Somehow, I can't imagine when or how, scsi emulation was turned off. With this corrected cdrecord -scanbus finds the cdrw with no difficulty.
I then tried hdparm -d int /dev/hdd with int = 0 or 1. This turned dma off and on. hdparm -tT /dev/hdd produces a page of ide-scsi: hdd: unsupported command in request queue (0). Since dma on is not a problem I left it that way. Again, many thanks for all the help. I've learned some new things and the system is working again. Tom George -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
