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I'm trying to install Proxmox on a new Mini PC (GMKteck NucBox M5 Pro Mini PC) but keep getting the following error :

EFI boot mode detected, mounting efivars filesystem mount: /sys/firmware/efi/efivars: mount(2) system call failed: Operation not supported.

dmesg(1) may have more information after failed mount system call.

Installation aborted - unable to continue (type exit or CTRL-D to reboot)

I've also tried installing Ubuntu and Arch Linux and they both fail with a very similar error.

The bios/uefi (AMI) has very limited options and seems to have no option for legacy boot so it's booting in UEFI mode by default. The Pro version of this NucBox M5 is very new and I have a feeling the Bios is missing some UEFI files. Choosing 'Launch EFI Shell' from bios results in a 'Not Found' error.

Any help would be appreciated.

mrsmith
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  • There's no "bios" (that's just an API that a computer's firmware might expose, and it's not like anything does the full thing anymore), what you're interacting with is already the EFI setup utility – Marcus Müller Feb 09 '24 at 20:10
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    anyways, you seem to be dropped to a rescue shell at that point; did running dmesg tell you anything specific about what went wrong? – Marcus Müller Feb 09 '24 at 20:12
  • Please don't crosspost. Ask either on Superuser or here but not both at the same time – Chris Davies Feb 09 '24 at 21:23
  • I did a simple Google search for your model and found 2 videos on their Guides/How-To page that clearly shows Ubuntu booting in UEFI mode – eyoung100 Feb 09 '24 at 21:29
  • There's also https://unix.stackexchange.com/q/91620/100397 – Chris Davies Feb 09 '24 at 21:29
  • Thanks but the videos you're seeing are the standard M5 model, the M5 Pro (with 2 NVME slots) has different firmware that seems to be missing some UEFI files from what I can tell. – mrsmith Feb 10 '24 at 01:13
  • The other post you refer to I don't really understand, I'm not sure where I'm supposed to run those commands. – mrsmith Feb 10 '24 at 01:14
  • Install vmware and then install Linux (any distro) over that. Worth a try. – user9101329 Feb 10 '24 at 08:17
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    @mrsmith there's literally no indication for "seems to be missing some UEFI files". That's clearly not the case, your UEFI boot does boot into Linux just fine. So, what does typing dmesg (enter) at the point you get the message give you? – Marcus Müller Feb 10 '24 at 12:45

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