mounting DVD on suse linux 11.0

i tryied to install xmgrace in my computer
and it asked to insert the open suse 11.0 and then i inserted it
and tried to install it using the yast
then it gave me this error?

Failed to mount cd:///?devices=/dev/sr0 on /var/adm/mount/AP_0x00000001: No medium found (mount: No medium found)

i highly appreciate the help:

You may have a problem with your hardware configuration for the DVD drive.

I have OpenSuSe 10.3 installed, with an IDE cd-rom drive (/dev/sr0) and a SATA DVD drive at /dev/sr1.

Start the YaST control center. Click on Hardware in the left hand column, then Hardware Information in the right hand column. When YaST is done probing your hardware, click on CDROM in the listing and verify that your DVD drive is /dev/sr0.

If that is correct, then you may have a problem with the DVD disk itself. You may have to download and burn a new one.

In YaST software management, you could also try changing the source of packages to remove the DVD from the sources, and use only the SuSE repositories.

Originally Posted by bigrigdriver You may have a problem with your hardware configuration for the DVD drive. I have OpenSuSe 10.3 installed, with an IDE cd-rom drive (/dev/sr0) and a SATA DVD drive at /dev/sr1. Start the YaST control center. Click on Hardware in the left hand column, then Hardware Information in the right hand column. When YaST is done probing your hardware, click on CDROM in the listing and verify that your DVD drive is /dev/sr0. If that is correct, then you may have a problem with the DVD disk itself. You may have to download and burn a new one. In YaST software management, you could also try changing the source of packages to remove the DVD from the sources, and use only the SuSE repositories.

Thank you very much,

i checked my CD-ROM and it was /dev/sr0
so i might be the DVD , so i have to burn it again !!

then i unchecked the DVD as a source, and was able to install "xmgrace"

so thank you very much..