GT210 on mac pro1,1 can't hold down option key
Hi all,
I followed the instruction to make usb installation drive for ML and then when I tried to reboot while holding down option key to select usb drive, nothing shows up on my monitor. If I didn't press any keys, it will boot back to Lion with GT210 installed on the slot 2.
I swapped back to stock card 7300GT on slot 1, reboot it then hold down option key, now I can see the usb drive. That means my usb drive or usb port is work, nothing wrong.
My question is why I can't boot and hold down option key when using GT210 to select usb drive?.
I thought this card is the cheapest one that works with Mountain Lion regarding to the author's first post;
12. To get graphics working:
AMD 5770, 5870 (Stock cards), 6850, 6870 (PC flashed cards), ; Nvidia GT210, GTX285:
Nothing to be done, all works good.
Any suggestions are welcome.
Thanks.