On Wed, May 12, 2004 at 11:39:00PM -0400, Dwaine Castle wrote: .... > CD drives are cheap and I will replace any one of mine tomorrow > if I can find any evidence of failure. It just seems, to me, > that the checksum tests would be adequate to determine a hardware > or media failure. In one case there is a random read with seek to data and in another the mode is pure sequential. Anyhow if you look at audio CD players you will see that many have CD+R, Photo, etc capability as a check box in the feature list. The long list of features is a clue that all media is not the same. There are potential differences in the way the data is set down and that results in differences for the read side. A quick glance at the hardware list and your devices look 'modern'. I happen to have a handful of OLD CD-ROM readers that I use. Some days I am cautious and do not place selected media in a writer. Anyhow because I happen to have these old drives I do on occasion see problems that I would not see if I only used my new drives. My only point is that installation media should be made deliberately. Half way through an install is not a good time to have media problems. -- T o m M i t c h e l l /dev/null the ultimate in secure storage.