problems with installation of os

I’m using sony dvd drive. open suse os cd is not running in my dvd drive. I checked the bios settings. Its all ok. So please can you tell me solution to this problem?

NEWBIES - Suse-11.1 Pre-installation – PLEASE READ - openSUSE Forums

If you are SURE the BIOS is set to boot from cdrom 1st

Then consider that you may not have burned the disc correctly. You are sure you burned the .iso and didn’t just add the .iso to the disc as a data file.?

If you have another PC and read the contents of the disc - what do you see?