Booting from CD problem

Hi!

I have a P5GD1 motherboard with 4 S-ATA drives, 2 P-ATA drives and 3
DVD drives attached to it. I have the machine booting from S-ATA 1 and
the BIOS is left on the default IDE settings.

The boot priority is set to boot from floppy, dvd and S-ATA 1.

The problem i have is that i can't boot from a bootable cd. I have up
a boot CD (Hiren's Boot CD) with various utilities on it, which comes
in very handy. The CD works on my other 4 machines at home but not the
5th, the only one with S-ATA drives so i thought it is probably a
configuration issue?

Under the above settings the CD loads the menu (load Windows or boot
from CD) and if i boot CD it hangs with a flashing cursor.

If i change the BIOS setting from S-ATA to either P-ATA or S-ATA+P-ATA
the CD will load the program menu but once i select a program the CD
tries to load CD drivers (4 different kinds) which all fail and the
machine then hangs.

Naturally i am not asking for assistance with the CD, it works fine on
'normal' machines with no S-ATA drives in them. One of my other
machines has 4 S-ATA channels but no drives on them and the CD works
perfectly on it.

I am wondering if anyone else has experienced a similar problem or can
offer any solutions.

Thanks in advance.

Engelkott