CDROM (ioctl) reports ILLEGAL REQUEST

linuxlastslonge · 12-20-2004, 07:25 AM

i have a Plextor DVD+/-RW PX-712A installed on a Red Hat Linux release 7.1 (Seawolf). Kernel version is 2.4.2-2. i have scsi emulation running. to do so, i added the following line to /etc/lilo.conf:

Code:

append="hda=ide-scsi"

i am using the following tool set to write to the my media:

http://fy.chalmers.se/~appro/linux/DVD+RW/tools/?M=D

when i format a disc, i recieve the following error:

Code:

Dec 10 15:01:26 server kernel: sr0: CDROM (ioctl) reports ILLEGAL REQUEST.

after "writing" to the disc, i recieve this error when mounting:

Code:

Dec 10 15:16:57 server kernel: Warning: defective CD-ROM.  Enabling 
"cruft" mount option.

finally, when i "write" to the disc, it looks like it is burning 1.8 Gigabytes worth of data, but when it is finished; i mount it and there is only about 8 Megabytes of the 1.8 GB of data on the disc.

can someone help.... please???

thanks in advance!

linuxlastslonge · 12-20-2004, 01:39 PM

is there any other information that anyone needs to help troubleshoot my problem??

thanks.

matthew