Trying to find the board ID for Mac Pro 1,1 (no OS currently installed, can't access terminal)
For the Mac Pro 1,1 and 2,1 you will need to add
"Mac-F4208DC8","Mac-F4208DA9".
If you are not using a Mac Pro then you will need to get your board ID by entering this
command in terminal: ioreg -lp IOService | grep board-id