Hi, > I have suspected a hardware error as well. Is there > any way to confirm this?
You could try whether it can recognize any kind of other medium: wodim -v dev=/dev/sr0 -toc If i run this on an empty drive, i get ... Current: 0x0000 (Reserved/Unknown) ... Sense Code: 0x3A Qual 0x01 (medium not present - tray closed) Fru 0x0 ... wodim: No disk / Wrong disk! That's what i expect with your drive and problematic media. With a non-blank CD-RW i get ... Current: 0x000A (CD-RW) ... Manufacturer: CMC Magnetics Corporation ... track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 0 mode: -1 track:lout lba: 23260 ( 93040) 05:12:10 adr: 1 control: 0 mode: -1 With a blank CD-R: ... Current: 0x0009 (CD-R) ... Sense Code: 0x24 Qual 0x00 (invalid field in cdb) Fru 0x0 ... wodim: Cannot read TOC header wodim: Cannot read TOC/PMA (These complaints are normal. wodim should not try to inspect the CD-R content after the burner reported that it is blank.) With blank DVD-R: ... Current: 0x0011 (DVD-R sequential recording) ... ... same complaints as with blank CD-R ... > Strange thing tho I recently burned an ISO DVD movie > to a DVD with no problem. The laser beams for CD and DVD are of different wavelength. It seems that there are two different laser diodes used. http://mods-n-hacks.wonderhowto.com/how-to/extract-laser-diodes-from-dvd-burner-computer-drive-398495/ > I'm used to things in the > computer world either working or not. But perhaps the > burner is one thing where the result can be spotty as > well as perfect or not at all. The process of imprinting information relies in part on chemistry. This opens the door for thermodynamics and its weirdnesses. (How does a Crooke Radiometer work ? What's really behind the Mpemba effect ? Public explanations are ridiculous despite the experimental situation being quite clear.) Nevertheless, if the CD laser diode is dead and the the DVD diode still works, then this is a case of works-not-at-all-with-CD. Have a nice day :) Thomas
