Intel Motherboards : BIOS Bug: CD/DVD doesn't boot in certain setups

Author: nuc
Subject: BIOS Bug: CD/DVD doesn't boot in certain setups
Posted: 29 Mar 2016 at 8:09pm

Hi parsec!
First of all thanks for your interest and your fast and versatile response! :)

Image may be NSFW. Clik here to view. parsec wrote: Are your HDDs and DVD drive all SATA devices, not IDE drives with an IDE to SATA adapter?

It's SATA only, connected to the native Intel SATA2 ports.

Image may be NSFW. Clik here to view. parsec wrote: Are you using any true IDE drives, that use the 40 pin IDE ribbon cable?

nope

Image may be NSFW. Clik here to view. parsec wrote: What BIOS version are you using now?

The latest BIOS v1.70

Image may be NSFW. Clik here to view. parsec wrote: When you first noticed this problem, did you try clearing the CMOS/BIOS? When you move the drives between different SATA ports, did you clear the CMOS/BIOS after moving the drives?

I tried doing so now - it didn't make any difference.

Image may be NSFW. Clik here to view. parsec wrote: Are you confident that the SATA data and power cables are all working correctly?

Yes, everything is working correctly apart from that.

Image may be NSFW. Clik here to view. parsec wrote: In the Storage Configuration screen in the BIOS, what is the SATAII Operation Mode option set to? If SATAII Operation Mode set to IDE, what are the SATAII 1,2,3,4 Configuration and SATAII 5,6 Configuration options set to?

Big thanks for suggesting this! My standard setting is AHCI Mode, so I tried out IDE Mode and *surprise* suddenly booting up from the DVD-Drive works fine! Whenever I set it back to AHCI any optical media refuses to boot (I tried disabling some AHCI specific options too, but it didnt help).

So it seems that this bug is caused by the Intel AHCI module inside the BIOS ROM. Any suggestions from your side?

Thank you so much :)


Edited by nuc - 3 hours 48 minutes ago at 8:22pm