CloverBootloader VS OpenCorePkg

Definitely look into clover

You need to try and learn it ....clover is a bit eazy then OC https://github.com/CloverHackyColor/CloverBootloader/wiki/Configuration

I did manage to get Clover to boot, turns out it was a graphics card issue (Clover does not boot on ProLiant DL 560 Gen 8) so I threw an old HD 3470 I had laying around in it and I can now access Clover. I gonna play with Clover a little and see if I can get it to do what I want and if not, I grab the Slim ODD to SATA adapter you mentioned. Just need to find the cables to connect it.

In your case you may wish to research using a tool such as Clover Bootloader, which would allow you to install Proxmox to NVMe drives and then put Clover on an internal or external USB thumb drive. The boot process would start from Clover on USB before linking your NVMe installation and continuing from there.

Clover bootloader https://github.com/CloverHackyColor/CloverBootloader

You can use Clover to emulate UEFI on legacy BIOS computers.

Are there any other bootloaders I should be considering? My understanding was that LILO and BURG have essentially been abandoned so even if I were willing to rely on an abandoned project for something as important as the bootloader (I'm not btw) then it probably would not work with LUKS/Btrfs. While doing my initial research, I did come across Clover but I know even less about that than I do about Systemdboot and Refined. My initial impressions is that it seems very customizable theming-wise but it feels like maybe not too many people use it / I'd have a hard time finding help and that's IF it even supports LUKS/Btrfs.

You Clover outdated af (2017). Update to 5123.1, which is the last one with the old memory fixes: https://github.com/CloverHackyColor/CloverBootloader/releases/tag/5123.1

Here's a large example with nested arrays and dicts, integers, strings, etc:

https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/...

The hackintosh community has tools to generate those #s. e.g. https://github.com/acidanthera/OpenCorePkg/tree/master/Utili...

OpenCore 0.9.7 is out. You can get it from Acidanthera.

OpenCore 0.9.6 is out. Although there is only 1 change in config.plist (useful only for Max OS X 10.4 and 10.5), the code continues to receive improvements and fixes.https://github.com/acidanthera/OpenCorePkg/releases

acidanthera for OpenCore and half the kexts here

I just installed MacOS Ventura yesterday on a 2013 MacBook Pro by using OpenCore. Worth checking out if you haven’t already considered it: https://github.com/acidanthera/OpenCorePkg#readme

IF you don't have opencore downloaded, don't download from their link, go directly to the dortania guide here and download version 0.9.2: https://github.com/acidanthera/OpenCorePkg/releases/

You also seem to be using an older version of OpenCore, so updating that would be a good idea if you get the GPU issue sorted.

This is due to OpenCore getting confused when trying to boot Windows and accidentally thinking it's booting OpenCore. This can be avoided by either move Windows to it's own drive or adding a custom drive path under BlessOverride. See Configuration.pdf (opens new window)for more details.