MP 1,1-5,1 Mac 1,1 With no operating system

[Macword16]

Hello!

I recently bought an old Mac Pro 1,1 I managed to get it working with a Windows copy. However when messing around with the hard drive portions I somehow made it worse.
Long story short I got a clean hard drive with no operating system and have no idea how to get in to “bios”/ Efi to install a fresh copy of windows (preferably) or macos? And I only own a windows keyboard!

 

[barbu]

You need an installer. A dvd or usb with the OS you want to load. Then boot and hold option to get the boot picker. With your windows keyboard, that might be Alt, you’ll have to check.

 

[KeesMacPro]

You could download a .dmg of an OS 10.4 -10.7 e.g. Snow Leopard and make a bootable installer USB/ DVD.
Once all works you can install Windows (up to W7 IINM) through Bootcamp.

 

[macguru9999]

You need to make a special installer DVD for windows 7/10. There was some hack involved, try googling for it. A straight install wont work, no drive visible. Also pretty sure you only can do 32bit, or maybe only half the ram shows if you do a 64bit install. I remember it really pissed me off. Otherwise you can run el capitan but who wants to do that ? or run snow leopard and you get to use PowerPc programs if you choose ....

 

[Nguyen Duc Hieu]

Hello!

I recently bought an old Mac Pro 1,1 I managed to get it working with a Windows copy. However when messing around with the hard drive portions I somehow made it worse.
Long story short I got a clean hard drive with no operating system and have no idea how to get in to “bios”/ Efi to install a fresh copy of windows (preferably) or macos? And I only own a windows keyboard!

It's all depends what other machines do you have. If you have both a Mac and a PC. I suggest the below method:
(This is one of the methods, not the only one)

1. El Capitan
You need another Mac.
Watch the below Youtube video for instruction. Link to the ready-made dmg is right below it.


2. Windows 10.
The below instructions assumes that your DVD drive is already dead. You can only boot from the HDD/SSD slot. I don't know if you can boot from a USB stick. I assume you can't.
You need another Windows 10 PC for the below steps.
- Take an SSD and put it into an USB enclosure
- Download a Windows 10 ISO file from Microsoft website.
- Download a copy of Rufus.
- Now create a Windows installer using Rufus, destination disk is the SSD in USB enclosure.
When done, remove the SSD from the USB enclosure, put it into a blank slot of the Mac Pro 1,1. (SSD1)
Put another blank SSD to another slot (SSD2)

Now you can select the SSD1 as the boot disk from the boot picker screen (if you have a Mac graphic card like 7300GT) or from System preference within El Capitan (if no boot screen), and install Windows to SSD2.
Installing bootcamp (to come back to Mac OS when you want to)

You can install Windows 10 onto the same SSD1. It must be plugged in anyway to boot Windows.