I have AMI Aptio F6 BIOS in my Antec VSK3000E desktop, running Windows 7 Professional [Retail, not OEM]. Belarc reports: Boot Mode: Legacy BIOS in UEFI & UEFI: American Megatrends Inc. F6 08/03/2013 &
Board: Gigabyte Technology Co., Ltd. Q87M-D2H.
I have tweaked UEFI/BIOS combine to reflect as much BIOS as possible.

My question concerns the three Boot Options, and the Boot Options Priority; apparently within the Legacy-BIOS portion.

I would like to set Boot Options to:
external USB FD
external USB CD\DVD device
external USB stick [bootable]
internal CD\DVD reader/writer [also has BluRay playing ability]
internal CD\DVD reader/writer [does not have BluRay playing ability]
internal hard-drive [has System Reserved partition, Cdrive partition, Ddrive partition]

Because I do not at all understand the choices that are found in the Options and Priority blocks, I have no idea on how to "write" the above 6 choices into Boot Options and Boot Options Priority.