Hi guys, my first post, I've been trying to put Mac OS X on my Mac Pro 1.1 for about 8 months
(English is not my native language so I apologize for incorrect spelling)
But let's get to my problem, I got this Mac without its GPU and I couldn't see the bootloader screen. After a lot of research I discovered how to modify the roms for efi. But I couldn't do it and with a lot of research I found here on the forum the rom already made for my gpu which is one (HD-487A-ZWFC xfx hd4870 1gb) it uses hynix memories. I recorded the ci eprom. and I got my boot screen, I was able to install Mac OS 10.5.4 with it working I tried running (MacPro2006-2007FirmwareTool)
but it doesn't open
Then I decided to update to 10.5.8 but when I do this my Mac starts and when the system loads the screen goes off and there is no video signal, then I tried to put 10.6.8 on but it doesn't even reach the installation part and I lose video signal, Then I tried directly to 10.7.5 but the prohibited symbol appears and that's it... can anyone tell me what's happening. where am I going wrong.
*my goal is to update it to mac 2.1 to put new x5365 cpus
* and install the latest Mac OS possible on it but I can't because my screen always goes off the only one that ran was 10.5.4 and every time the system starts it complains about the gpu power supply. .
* windows 7 10 x64 it runs perfectly......boot mode.
I'm from Brazil here and it's difficult to find the original gpus and when you find it, it's half the minimum wage, importing it is double the value..
I tried with another gpus also xfx r370 2gb, msi gf 210 1gb but none of them have efi because I can't modify it so I don't have the bootloader screen and the Mac OS system doesn't even appear. only working on windows
(English is not my native language so I apologize for incorrect spelling)
But let's get to my problem, I got this Mac without its GPU and I couldn't see the bootloader screen. After a lot of research I discovered how to modify the roms for efi. But I couldn't do it and with a lot of research I found here on the forum the rom already made for my gpu which is one (HD-487A-ZWFC xfx hd4870 1gb) it uses hynix memories. I recorded the ci eprom. and I got my boot screen, I was able to install Mac OS 10.5.4 with it working I tried running (MacPro2006-2007FirmwareTool)
but it doesn't open
Then I decided to update to 10.5.8 but when I do this my Mac starts and when the system loads the screen goes off and there is no video signal, then I tried to put 10.6.8 on but it doesn't even reach the installation part and I lose video signal, Then I tried directly to 10.7.5 but the prohibited symbol appears and that's it... can anyone tell me what's happening. where am I going wrong.
*my goal is to update it to mac 2.1 to put new x5365 cpus
* and install the latest Mac OS possible on it but I can't because my screen always goes off the only one that ran was 10.5.4 and every time the system starts it complains about the gpu power supply. .
* windows 7 10 x64 it runs perfectly......boot mode.
I'm from Brazil here and it's difficult to find the original gpus and when you find it, it's half the minimum wage, importing it is double the value..
I tried with another gpus also xfx r370 2gb, msi gf 210 1gb but none of them have efi because I can't modify it so I don't have the bootloader screen and the Mac OS system doesn't even appear. only working on windows