You have same bios as me. You need to set ahci in southbridge if you set combined mode you sata dvd drive mist be in one of first 4 ports, otherwise disable combined mode. but you also need to select 1st boot device as sata/dvd. in my bios it showed both ide and sata cd/dvd boot drive options. i had one of each and it was set to ide/cd-dvd so it ignored my sata dvd drive. perhpas you have the same issue - its set to ide cd/dvd.

I didnt see the sub-menus in the settings. Good spot - my stupidty i will check.