Jay Leafey wrote: > I just got a Dell Dimension e521 (AMD 64 x2, nVidia MCP51 chipset) and > so far it has been fine. Today I tried to burn some CD-R and DVD-R > disks and have been able to do nothing but make coasters. The drive is > a TSST TS-H653a (Samsung OEM) and does have the current firmware. > Playing back data, audio, and video disks work just fine, but recording > is a different matter. > > The drive shows up as /dev/scd0 and all the symlinks for /dev/cdrom, > /dev/cdwriter, /dev/dvd, and /dev/dvdwriter point to that device. Both > cdrecord and growisofs complete without any errors, but when I try to > remount the just-recorded disk I get an error: > > [jleafey at jaybird Downloads]$ mount /media/cdrecorder/ > /dev/scd0: Invalid argument > mount: block device /dev/scd0 is write-protected, mounting read-only > /dev/scd0: Invalid argument > mount: I could not determine the filesystem type, and none was specified > > I have also tried to explicitly mount it specifying the device and fs type: > > [jleafey at jaybird Downloads]$ sudo mount -t iso9660 /dev/scd0 \ > /media/cdrecorder/ > mount: block device /dev/scd0 is write-protected, mounting read-only > mount: wrong fs type, bad option, bad superblock on /dev/scd0, > or too many mounted file systems > > The output of dmesg shows the message "cdrom: This disc doesn't have any > tracks I recognize!" when this happens. > > Since I also get an error on the eject command UNLESS RUN AS ROOT > (eject: unable to eject, last error: Inappropriate ioctl for device) I > thought it might be a permission problem, but the device (/dev/scd0) is > showing up as being "owned" by me, courtesy of Gnome no doubt. I get > the bad burns whether I run as root or a regular user. > > At this point I don't know whether to think the problem is with cdrecord > or the sata_nv driver. Anybody got any ideas on where to look next? On one of my systems with an AM2 MCP51 motherboard, I had some problems with it handling the SATA disk, so I built and installed the most recent (at that time) kernel [2.6.20.1]. That seems to solve both my onboard gigabit nic and the sata_nv problems. --peter gross