Alright - this worked, brilliant!
To quickly summarise:
1. Read this: https://docs.zfsbootmenu.org/en/v3.0.x/general/portable.html
2. Boot Linux Mint Live ISO, download the recovery EFI file and place it in a fat32 partition as instructed. It...
Only if he fixed the boot on both drives. Adding a mirror and having the 1st one fail without doing that leads exactly to this situation.
OP, try zfsbootmenu
https://github.com/zbm-dev/zfsbootmenu
That looks interesting - I'll give it a crack. I'm sure if I can boot my system normally at least once I can probably repair the bootloader from within Proxmox itself.
Yes I did - that's where I encountered my issues with the proxmox-boot-tool. The format command works, the init command did not.
Yes it is a UEFI boot partition.
"proxmox-boot-tool init /dev/sda2" is the command that failed for me. Not sure...
I have a somewhat frustrating situation - I have a ZFS RAID1 which started out life as a single disk, and then a second SSD was added as a mirror after the installation was done. The original failed, and today I learned that a ZFS RAID1 mirror is...
+1 to this idea, I made a rant a few years ago about default settings not making much sense, and it still bothers me to this day. Having profiles would be great. It's already a thing with the "OS" selection - just let us make our own please :)
I came across this today - wow what a headache. I have been manually reducing RAM in the meantime when needed, but it's definitely annoying. I still try to use UEFI for everything but sometimes I just need something legacy to work.