I purchased this already upgraded mac pro quite some time ago.
Its running 2x 3.33ghz cpu, 128gb of ram, and a rx 580 8gb and cam installed with Mojave.
I realise this was upgraded and installed by someone else, but i am now looking at upgrading to Monterray or ventura - Having seen some recent videos online in doing so.
Am quite happy with the process using opencore, BUT i do not know what type of gpu this is (meaning if its a firmware patched pc or std mac one) or how Mojave was installed.
My thoughts are to get a new nvme pci card and install to a clean drive, but not sure if i will be able to select the drive if its a patched pc card and i do not have a std mac alternative.
What are my options that will help in this case?
thanks in advance.
I also recommend you do the check that Tsialex suggested (Hold Option key to boot, preferable with wired keyboard. For Magic keyboard, you may connect the USB cable into the front USB port) first.
This is the easiest (and most reliable) way to tell what your GPU can do. And then you may decide what to do next. Many guide out there are for generic Mac, not "Mac Pro with a non flashed GPU", follow them often lead you to a dead end, even in some situation that's very hard to recover.
Once figure out the GPU's capability, then there are few ways you can go.
1) If your GPU can display that boot manager natively. It will be easy, as long as you have your exsiting Mojave drive on hand, or any natively support installation media (e.g. a USB Mojave installer), then you are very safe to do whatever you want, won't be too hard to recover (if anything goes wrong).
2) If you just see a black screen in that test, then your GPU should be just a normal PC RX580. In this case, you can flash your Mac with the latest EanbleGop driver. So that your cMP will allow that RX580 to show you the native Apple boot screen. Once this is done, you are back to route 1, very safe to contune your journey.
3) You can only see black screen, and you don't want to risk your cMP (flashing firmware always associate with risk). Then you can test boot with OpenCore first. e.g. I created a "pre-configured for Mac Pro 5,1" OpenCore package.
I created a new "easy to install package" as per many requested (based on the official OpenCore). [The attached package updated to 1.0.0] For those who only need HWAccel, post #594 has everything you need. This new package mainly offer HWAccel + boot screen. Also, this package should work in...
forums.macrumors.com
This allow you to boot existing Mojave. You may simply install this onto a bootable USB drive (or any SATA drive), and see if you can get the boot picker to show up (I congifured that automatically show up for 10s after power up). If it works, then you can simply follow the instruction in the above post to further install Monterey.
[N.B. my package does NOT support Ventura, please don't even try it. Monterey is the highest you can go. And so far, running a unpatched Monterey via OpenCore on my cMP is super stable. I really like it]
For NVMe, please go to check your actual BootROM version first. I expect that should be 144.0.0.0.0, but if not, you better update the firmware before you start anything else. Tsialex is the expert in this area, sure he will help you if you have any trouble.