To all those who were following this thread, I finally solved the issue. For a quick recap, after upgrading from FC2 to FC3, I was no longer able to burn CD's. I could not run cdrecord from the command line without getting the following error: [code] cdrecord: No write mode specified. cdrecord: Asuming -tao mode. cdrecord: Future versions of cdrecord may have different drive dependent defaults. cdrecord: Continuing in 5 seconds... Cdrecord-Clone 2.01-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling Note: This version is an unofficial (modified) version with DVD support Note: and therefore may have bugs that are not present in the original. Note: Please send bug reports or support requests to http://bugzilla.redhat.com/bugzilla Note: The author of cdrecord should not be bothered with problems in this version. TOC Type: 1 = CD-ROM cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2). cdrecord: WARNING: This causes a high risk for buffer underruns. cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler cdrecord: Permission denied. WARNING: Cannot set priority using setpriority(). cdrecord: WARNING: This causes a high risk for buffer underruns. scsidev: '/dev/cdrom' devname: '/dev/cdrom' scsibus: -2 target: -2 lun: -2 Linux sg driver version: 3.5.27 Using libscg version 'schily-0.8'. cdrecord: Warning: using inofficial libscg transport code version (schily - Red Hat-scsi-linux-sg.c-1.83-RH '@(#)scsi-linux-sg.c 1.83 04/05/20 Copyright 1997 J. Schilling'). Driveropts: 'burnfree' SCSI buffer size: 64512 atapi: 1 Device type : Removable CD-ROM Version : 0 Response Format: 1 Vendor_info : 'ATAPI ' Identifikation : 'DVD-ROM 16X ' Revision : '582F' Device seems to be: Generic mmc2 DVD-ROM. Current: 0x0000 Profile: 0x0010 Profile: 0x0008 cdrecord: Sorry, no CD/DVD-Recorder or unsupported CD/DVD-Recorder found on this target. [/code] and relevant entries in my /var/log/messages were: [code] [root@eunix etc]# tail -f /var/log/messages Dec 19 14:04:41 localhost kernel: hdb: drive not ready for command Dec 19 14:04:41 localhost kernel: hdb: status timeout: status=0xd0 { Busy } Dec 19 14:04:41 localhost kernel: hdb: status timeout: error=0xd0LastFailedSense 0x0d Dec 19 14:04:41 localhost kernel: hdb: DMA disabled Dec 19 14:04:41 localhost kernel: hdb: drive not ready for command Dec 19 14:04:41 localhost kernel: hdb: ATAPI reset complete Dec 19 14:04:42 localhost kernel: hdb: request sense failure: status=0x51 { DriveReady SeekComplete Error } Dec 19 14:04:42 localhost kernel: hdb: request sense failure: error=0x50LastFailedSense 0x05 Dec 19 14:04:42 localhost kernel: hdb: request sense failure: status=0x51 { DriveReady SeekComplete Error } Dec 19 14:04:42 localhost kernel: hdb: request sense failure: error=0x50LastFailedSense 0x05 Dec 19 14:10:01 localhost crond(pam_unix)[3421]: session opened for user root by (uid=0) Dec 19 14:10:01 localhost crond(pam_unix)[3421]: session closed for user root [/code] We investigated my /etc/fstab. hal issues, cdrecord.conf, /proc/ide, and several other issues, but were unable to resolve the problem. I found this thread: http://www.linuxfactors.com/forum/showthread.php?s=4451c48f076d5e36eb8f70e78e4b8728&p=126126#post126126 and one other similar one and found that my problem was caused by changes made to cdrecord in FC3 which broke compatibility with my MSI CD RW drive. This burner had worked just fine with RH8, RH9, FC1 and FC2. As a matter of fact, since my computer is a dual boot FC2/FC3 box, I could boot to FC2 and burn, but not burn in FC3. So it wasn't a "bad" hardware issue. I replaced my MSI CD RW with a new Memorex 52x32x52x unit and it burns like a champ. From Nautilus, with k3b and from the command line with cdrecord. Thanks to all who worked with me and offered suggestions and advice in fixing this. I just wanted to post this here in case someone else is searching these archives with a similar problem or has been following this thread. Thanks again, Jim Dishaw -- This is an email sent via the webforum on http://fcp.homelinux.org