Installation of Mac Pro 3.1 OS
Installation of Mac Pro 3.1 OS
You can also set up Sierra on this Mac using the Sierra patcher utility. A Linux distribution could also be added. Alternatively, some suggest simply installing Windows 10.
Noting this falls under the "not windows" section, I’ll mention that Linux can be set up on all MacPro models. It supports 1.1, 2.1, and even native EFI mode, including 32-bit configurations using IA32 grub. You also receive complete fan management for MacPro fans. The only missing part is the WiFi card, which can be added via Ubuntu or similar with "additional drivers."
Shut down your Mac. Press Command-Option/Alt-R while holding the Power button. (On some keyboards, Option is labeled Alt). Keep pressing until you see a spinning globe and the text "Starting Internet Recovery. This may take a while". The message will show a progress bar. Wait until it fills completely. Look for the MacOS Utilities screen. Click Reinstall macOS and begin the setup.
Just to be clear, my issue here is that you're proclaiming that Mac Pro 1,1 can't run Windows, when it effortlessly does. Someone's going to read, believe and spread that. Boot Camp will hold your hand if you can settle for 32-bit Windows, and the hardware will happily run 64-bit Windows if you for e.g. install it elsewhere and just throw in the disk. Apple even provides the drivers. It's a 12 years old system, of course it has limitations and shortcomings, but that's not a good reason to spread completely false information.
I updated my content to eliminate any mention of Windows not functioning on Macs. Just to clarify, Windows operates on any Mac with an Intel or AMD processor. Linux is compatible with all modern Macs, including those using PowerPC. My original focus was on EFI booting, which I hadn’t highlighted enough in the first version. I’ve revised it to remove technical details and correct any misunderstandings. I’m sorry for the confusion.