Permanent OS X System choice in BIOS / Unable to boot win10

[westfood]

Permanent OS X System choice in BIOS

// Updated

Hi,

I've got z77 board/gigabyte with 250 GB SSD for OSX and 500 GB SSD for win10 + three other data HDDs.

In BIOS i disabled all ATA ports except 250 GB for SSD, removed GPU Nvidia 560 and I sucessfuly booted recent Unibeast with El Capitan but my PS2 keyboard did not work, so I kept default name of SSD with "Bez Jména" meaning no name in my language. System restarted but OS X did not booted. I should probably use name "El Capitan" for SDD. So I tried to boot unibeast, but I never booted it again. Anyway, part of my boot options in UEFI/Bios is Mac OS X, it does not matter if there is any SDD/HDD enabled, there is still option for Mac OS X.

a.) Is there way to remove Mac OS X option from UEFI boot options?

Thanks,

last time i installed hackintosh was on one of the first core2duos

 

[westfood]

a.) I removed clean EFI partition on 250 GB SSD and boot option disappeared.