The drive supports it, but the OS may not. For instance, whenever I want to image a CD under Linux, I dd if=/dev/cdrom of=wherever.dsk bs=2048, and it always ends with an error after it runs past the end of the disk. (And there are errors logged to the console, too, showing that it failed trying to read the nonexistent sector numbers.) Happens with several different CD-ROM and CD-R drives, all of which *do* report actual device sizes correctly. Of course, if you bypass the stupid Linux device driver that doesn't know any better and bang on the CD directly, you may not have that problem. Or if you switch to a real OS. This is RedHat 6.0 and 6.1, with various Adaptec SCSI host adapters and the "stock" Linux drivers. Maybe you have a NCR-based host adapter and the drivers there are smart enough not to run off the end? -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927