Re: Ineradicable EFI boot entry

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From: Michael <[email protected]>
To: [email protected]
Reply-To: [email protected]
Subject: Re: [gentoo-user] Ineradicable EFI boot entry
Date: Sun, 14 Jun 2026 23:49:51 +0100
Message-ID: <[email protected]>
In-Reply-To: <[email protected]>
MIME-Version: 1.0

On Sunday, 14 June 2026 23:15:06 British Summer Time Peter Humphrey 
wrote:
> On Sunday, 14 June 2026 20:29:40 British Summer Time David Bryant 
wrote:
> > Have you tried opening a terminal window, logging in as root, and
> > mounting the EFI partition at /mnt?
> 
> That would have been a good idea, but opensuse doesn't have an entry
> in /efi. It does appear in efibootmgr though, and the EFI BIOS offers
> to try to boot it. I just can't get rid of it from the BIOS.

From what you're describing the OpenSUSE /efi directory and its entries 
are gone, but the corresponding entry in the EFI firmware (BIOS) boot 
list is not gone yet.

Boot with a LiveUSB.  Then as Joost suggested, check the virtual 
directory '/sys/firmware/efi/efivars' is mounted with read-write access 
permissions, e.g.

 ~ $ mount | grep efivars
efivarfs on /sys/firmware/efi/efivars type efivarfs 
(rw,nosuid,nodev,noexec,relatime)

If it is not writeable remount it 'rw' and run efibootmgr to find out 
the entry number of the SUSE bootloader.  Then delete the corresponding 
XXXX entry with:

'efibootmgr -b XXXX --delete-bootnum'

If the EFI firmware is triggered at boot to scan disks and block devices 
it will flush it from the list, but instead of messing about with 
disconnecting drives it is easier to follow the above steps.

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