CloverBootloader VS chromium-legacy

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You Clover outdated af (2017).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

See also: the equivalent for legacy OS X (Lion and newer): https://github.com/blueboxd/chromium-legacy

A niche suggestion if you have all of the time: if you don’t rely on icloud services, you can actually try very old os x like mountain lion + this for browser

If you can do it, I'd go to Lion. It added so many features such as the launchpad, the option to reopen windows when you restarted your computer, etc. It's new enough that Chromium Legacy will work, and it's what I use for my unsupported Mac OS X installs. Unlike Arctic Fox which is essentially pale moon 27 under the hood, Chromium Legacy is fully up to date as of when I'm posting this.

Chromium Legacy goes back to OS X Lion 10.7 and is being actively worked on. It has its limitations compared to the original Chromium (see Readme): https://github.com/blueboxd/chromium-legacy

I don't use GitHub much so I don't know, so how can you tell how many people are working on a project, like for Chromium Legacy: https://github.com/blueboxd/chromium-legacy

I haven't tried it myself, but a couple of minutes ago I found out about Chromium-legacy. The description says it's equivalent to current upstream versions of Chromium except for some limitations caused by older OS versions. Viewing DRM-protected content (e.g. Netflix) requires separately installing the Widevine library.