Grub update finds all OS installations ever done on my SSD!

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1

How is this possible? I always wiped the SSD, never used dual boot and the SSD was wiped again in Calamares during latest install. There are no other OS’s installed.

Generating grub configuration file ...
Found theme: /usr/share/grub/themes/manjaro/theme.txt
Found linux image: /boot/vmlinuz-5.15-x86_64
Found initrd image: /boot/intel-ucode.img /boot/initramfs-5.15-x86_64.img
Found initrd fallback image: /boot/initramfs-5.15-x86_64-fallback.img
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Found Debian GNU/Linux 9 (stretch) on /dev/nvme0n1p2
Found Debian GNU/Linux 10 (buster) on /dev/nvme0n1p2
Found Debian GNU/Linux 11 (bullseye) on /dev/nvme0n1p2
Found Debian GNU/Linux 10 (buster) on /dev/nvme0n1p2
Found Ubuntu 18.04.5 LTS on /dev/nvme0n1p2
Found Ubuntu 20.04.4 LTS on /dev/nvme0n1p2
Found Ubuntu 20.04.4 LTS on /dev/nvme0n1p2
Adding boot menu entry for UEFI Firmware Settings ...

I thought maybe there is something in the UEFI bios, old bios boot menu items but I could not find anything related.

2

When you uninstall an OS, you should also delete its entry from the UEFI system partition.

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3

Do you mean the /boot/efi partition? I am not sure how to do that.
But when I select wipe disk during Manjaro install, aren’t all partitions deleted? Because Calamares creates 2 new partitions.

4

Just remove the directories for previous Linux installations from /boot/efi/EFI.

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5

No, that would really bad, since the EFI Partition can be shared between OS’s, thus you would delete the ability to boot another OS. Do it by hand.

Or create one EFI Partition for each OS and label it accordingly.

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6

title adjusted as it is grub (your boot loader) at work there

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7

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