Re: Unable to write reliably CD-RW's!
On 04/04/06, G.C.H.M. Verhaag <firstname.lastname@example.org> wrote:
If you still have these errormessages, post them here. There may be someone on this list who understands them.
Vegard L. Rekaa wrote:
> My CD-burner is:
> Lite-On LTR48126S (I'm not at home so I'm guessing, but it is a pretty
> good guess)
> After doing all the configurations listed below this burner has worked
> If I should write a checklist on what I needed to fix, it would be:
> - SCSI emulation (couldn't burn a working cd without this!!!)
> - Set CDRECORD to SUID (dpkg-reconfigure cdrecord)
> - listen to all errormessages you may see when starting k3b, and
> fix them!
> - Edit /etc/cdrecord/cdrecord so it includes correct driver
> If you don't have this info, you can find burnerspecs
> on the web, use google.
> Sometimes it helps to set MAX_BURNERSPEED to less than
> the one given by
> the burner-specs. In my case I adjusted it down from
> 48x to 40x...
> - Set rights to all devices needed for the cd-burner (these can be
> more than just one...)
> with scsi emulation on my computer this was /dev/scd1 ,
> /dev/sg1 , /dev/cdrw (just a symlink),
> and make sure the devices is owned by a group you are a
> member of.
> Good luck!! If you need detailed explenations on this, say so and I
> will hand it to you when
> I am at home by the PC.
> Cheers, Vegard
Thanks for your detailed explanation! I can skip the k3b part because I
mainly use the plain cdrecord command, and sometimes xcdroast, also a
graphical frontend to cdrecord.
I've indeed gone through all the steps you mentioned and ran cdrecord as
root! I even reduced the writing speed to 2! Running cdrecord with the
-v option shows no errors at all. Using both the -v and -V option
results in more output, which shows some scsi errors after fixating, and
just before ejecting the disk! However I don't understand those messages!
I can't show you an example right now, because I removed the writer from
the Linux box, and have it checked for possible hardware problems.
By the way, is the Lite-On LTR-48126S a recent model that is still
available on the market?
I do not know wether LiteOn LTR48126S is still on the market. Try instead to look for an reasonable cd-writer on the market, post the name here and ask if anyone have any experiences, or any other cd-writer (still available) to recommend...
I will continue as if you still have your burner, just in case hardwarecheck gives no or positive result. Again, forgive me if I repeat things you allready have tried.
When you are trying to burn a cd is there anything burned at the cd at all, or is the cd still blank when finished?
A good check to see if cdrecord knows of your cd-burner is typing "cdrecord -scanbus". If the output is a list wich contains your your cd-burner-device, try to burn a cd with the option "cdrecord dev=what_you_found cd_image.iso". "what_you_found" could be 0,1,0 , 0,0,0 , 1,0,0 , 2,0,0 etc (assuming you got a result from "cdrecord -scanbus").
If "cdrecord -scanbus" does not give any result, try "cdrecord dev=something -scanbus", where "something" can be any of these: /dev/cdrw, /dev/scd0, /dev/scd1, /dev/cdrom0, /dev/cdrom1, 0,1,0 (etc), ATAPI:, ATA: or something similar...
The moment you get an outpur listing your burner , say with dev=/dev/scd1, try to burn a cd with the command
cdrecord dev=/dev/scd1 -v -speed=something_low image.iso
If all this fails, give us the errormesssages!
Again, good luck!