How I upgraded and reverted Proxmox from 6 to 7 to 6 with UEFI

How I upgraded and reverted Proxmox from 6 to 7 to 6 with UEFI boot and GRUB

#upgraded #reverted #Proxmox #UEFI

“OneMarcFifty”

I wanted to upgrade my Proxmox VE ( Server from version 6 to version 7. But I did not want to do this without a Plan B, a fail back plan. For this I used GRUB and efibootmgr. I converted a small swap partition into a bootable Linux partition and pivoted the Version 6 to…

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