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Accepted
yaimo
Asked: 2020-12-23 01:31:23 +0800 CST

How can I get rid of old Debian entries in my bootloader?

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I had tried in vain to install Debian (which didn't work) and after that I have installed Ubuntu with LVM. Now I still have the boot entry for both OS (F7 key on startup). Both OSes were installed by using LVM-encryption and encryption.

As suggested I installed grub-customizer, which looks like this:

enter image description here

No mention of Debian there. How can I get rid of this entry?

Output of efibootmgr:

nuc@nuc:~$ sudo efibootmgr
[sudo] Passwort für nuc: 
BootCurrent: 0001
Timeout: 1 seconds
BootOrder: 0001,0004,0002,0003
Boot0001* ubuntu
Boot0002* UEFI: PXE IPv4 Intel(R) Ethernet Connection (10) I219-V
Boot0003* UEFI: PXE IPv6 Intel(R) Ethernet Connection (10) I219-V
Boot0004* debian
bootloader disk-formatting

1 Answers

  1. Best Answer

    According to the information acquired in the comments, you only want to remove the Debian entry from the UEFI boot menu. To do that:

    Open a terminal and run:

    sudo efibootmgr

    The output will be, as stated in the question, like this:

    BootCurrent: 0001
Timeout: 1 seconds
BootOrder: 0001,0004,0002,0003
Boot0001* ubuntu
Boot0002* UEFI: PXE IPv4 Intel(R) Ethernet Connection (10) I219-V
Boot0003* UEFI: PXE IPv6 Intel(R) Ethernet Connection (10) I219-V
Boot0004* debian

    To remove the unwanted entry (debian in this case), run:

    sudo efibootmgr -b 4 -B

    which will delete the following entry: Boot0004* debian.

    After that, remove the debian folder from the EFI partition by running:

    sudo rm -r /boot/efi/EFI/debian

    Since grub doesn't seem to have references to debian, the process stops here.

    At the reboot you shouldn't see debian anymore.

    Thanks to this answer and mook765.

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