d850mv and extra ata controller

Hi,

I run into problem with my d850mv mobo and promise tx2 controller.
Promise detects that there is a bootable cdrom in atached atapi
cdrom, but d850mv bios does not list this cdrom in atapi devices list,
so that I cannot boot from cdrom. However, everything works fine with
hard disk atached to promise. Has anyone run into similar problem with
extra ata controller with d850mv?

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