First. Turn South Bridge Intel ICH8R and Jmicron JMB 363 into AHCI mode.
Second. You have two options to get openSUSE 10.2
running on ASUS P5B Deluxe.
Utilize SATA Optical Drive attached to Intel's ICH8R to install openSUSE 10.2 without any trouble.
Utilize IDE Optical Drive attached to Jmicron's PATA port.
Then proceed as follows:-
Boot from the openSUSE DVD. Get a messsage the CD drive is lost. Press Enter to get past the error message, then choose your language in the following screen. That will bring you to the main menu. Use the down arrow key to select the Kernel Modules option and press Enter. In the next screen press Enter again to select the default option for IDE/RAID/SCSI Modules. In the long list that follows, find both the JMicron and the Generic IDE drivers, select them, press Enter, then press Enter again when you're asked for special options to pass to them. You will have to do this twice -- one time for each driver. When you return to the kernel module screen, use the Tab or arrow keys to select Back, and press Enter. That should put you back into the Main Menu. Now select the option for Start Installation or System and press Enter, then select Start Installation or Update and press Enter, and lastly select the CD-ROM as the source and press Enter. The normal graphical installation procedure will commence.