


Boot to live Linux by pressing "C" at startup.Copy the amdvbflash file you download to a folder on a USB flash drive or other removable media.

There is no need to remove it at any point. You can then install your new PC graphics card in the Mac Pro. To force Linux on a Mac Pro to boot in legacy BIOS mode, start it from a live DVD.īefore you start, make sure your Mac Pro reliably boots to your macOS partition without a need to use the boot screen. The flash tool will not see the PCIe graphics cards if it is run on Linux in EFI mode. There is a version of Atiflash available for Linux (now renamed amdvbflash). Mac Pro with PC graphics card installed.How to Atiflash on a Mac Pro without Windows or boot screen Sappphire or Gigabye or HIS 7950s or better still HD 7970s are better. Having said that, I flashed an XFX HD 5770 years ago and it works like a charm.īut. Now select your HD 7950.īe warned that XFX 7xxxxx GPUs are famous for deviating from the AMD design standard, there have been quite a few EFI flash failures. Rename it something like " HD7950 EFI ROM " and store a copy of it on a spare USB stick. The result will be your EFI flashed HD 7970 ROM. makerom.sh -efifile=7950mac.efi -romfile=efiromheader_7950.rom -originalrom=cardname.rom -devid=679a ( The path for this script in terminal should be your current Mac OS account to the bundle folder )īundle mikejones$. Unzip the attached " bundle" folder ( it's zipped ) and put it on your desktop.
