Re: Problems with SATA DVD+-RW drive

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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@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@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
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