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CD-ROM issue on RH 7.3

Johan Vikerskog
Occasional Visitor

CD-ROM issue on RH 7.3

Everything works GREAT with my setup, except for whenever i try to mount my CD-ROM the entire computer locks up and the only thing i can do is to reboot.
I cant find any drivers or information on how to solve this issue. Please help me. This is our last problem before we can continue with our project.

Thanks in advance

//Johan
7 REPLIES
Francisco J. Soler
Honored Contributor

Re: CD-ROM issue on RH 7.3

What command are you issuing to mount the CD?
What kind of CD are you inserting in the cd rom drive?

The computer locks or the graphical enviroment only?

Try with CTRL+ALT+F2, to access to console login in text mode and kill the mount command.

Frank.
Linux?. Yes, of course.
Johan Vikerskog
Occasional Visitor

Re: CD-ROM issue on RH 7.3

The entire computers locks. The "Read" led on the CD-ROM drive is lit up constantly.

It doesnt mather what kind of CD i put in the drive. I even tried to insert RedHat's own CD but the computer still locked up quiet good. =(

//Johan

Johan Vikerskog
Occasional Visitor

Re: CD-ROM issue on RH 7.3

Sorry i forgot.

mount /dev/cdrom /mnt/cdrom
Francisco J. Soler
Honored Contributor

Re: CD-ROM issue on RH 7.3

Can you send the information in dmesg file?
dmesg|grep -i cd

Is your cd a scsi drive or it is an ide drive?

If it's an ATAPI/IDE CD-RW, then you want to enable SCSI emulation in the kernel before you can mount it as a scsi device and burn CDs. (There's a fairly outdated "CD-Writing-HOWTO", www.tldp.org)

Frank.
Linux?. Yes, of course.
Johan Vikerskog
Occasional Visitor

Re: CD-ROM issue on RH 7.3

This is the information dmesg gives me about the CD-ROM

Uniform CD-ROM driver Revision: 3.12
cdrom: This disc doesn't have any tracks I recognize!
cdrom: This disc doesn't have any tracks I recognize!
Sergejs Svitnevs
Honored Contributor

Re: CD-ROM issue on RH 7.3

Try to enable the "using_dma" flag for this drive:
# hdparm -d1 /dev/cdrom

Regards,
Sergejs
I_M
Honored Contributor

Re: CD-ROM issue on RH 7.3

Hi

If you are in DMA trouble,
you may want to disable dma.

If you are using lilo,
append="ide=nodma"

If you are using grub,
??????kernel /vmlinuz-2.4.18-3smp ro root=/dev/cciss/c0d0p2 ide=nodma

Good luck