Hi!

> I realized that UDVD2.SYS driver (CDROM, DVD driver necessary
> for SHSUCDX to work) was not loading with message like:
> 
> Nothing found, UDVD2.SYS not loaded.
> 
> It turned out that this was due to my SATA configuration in BIOS
> (DVD reader/burner is connected with SATA on my computer) was:
> 
> Sata Controller 1: RAID
> 
> Tried AHCI (not working... is it AHCI that you need to "decrypt" BIOS 
> tables?).

That is a good point! AHCI is a more modern communication
method with harddisks, CD/DVD/BD drives and so on, which
for example improves parallel access to multiple files.

What you wondered about was ACPI: Those are data tables
describing your hardware, so operating system drivers
can adapt to it and do not need to use BIOS for access.

> Tried IDE: Bingo! Was seeing my DVD after reboot.

Yes, the CD/DVD driver only supports classic IDE style
modes for SATA / IDE / ATAPI, not the modern AHCI modes.

Maybe that should be mentioned in the install documents.

Regards, Eric



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