There are two menu entries that I want to remove from my GRUB boot menu, so I commented them out of the /boot/grub/grub.cfg file:

menuentry 'Windows Boot Manager (on /dev/sda2)' --class windows --class os $menuentry_id_option 'osprober-efi-FCD5-F73E' {

    ...

}

# menuentry 'Ubuntu 16.04.3 LTS (16.04) (on /dev/sdb1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-844ea196-bb78-4f18-b7fd-58be4c491e92' {

#   ...

# }

# submenu 'Advanced options for Ubuntu 16.04.3 LTS (16.04) (on /dev/sdb1)' $menuentry_id_option 'osprober-gnulinux-advanced-844ea196-bb78-4f18-b7fd-58be4c491e92' {

#   menuentry 'Ubuntu (on /dev/sdb1)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.10.0-37-generic.efi.signed--844ea196-bb78-4f18-b7fd-58be4c491e92' {

#       ...

#   }

#   ...

# }

I then run sudo update-grub as usual. However, doing so brings back the menu entries, which get uncommented from the grub.cfg file.

How can I get the menu entries to stay commented out after running update-grub so that they don't show up in the boot options? I realize that not running update-grub will keep out the menu entries, but I'd like to get rid of this unwanted behaviour from update-grub so that I don't have to manually comment out the menu entries each time I run this command.

Notes:

• Both update-grub and update-grub2 bring back the unwanted menu entries.


• The unwanted menu entries are duplicates. I already have menu entries for Ubuntu.

/boot/grub/grub.cfg

#

DO NOT EDIT THIS FILE

#

It is automatically generated by grub-mkconfig using templates

from /etc/grub.d and settings from /etc/default/grub

#

The proper way to edit grub entries is via /etc/default/grub and the files in /etc/grub.d/.

This entries are generated from os-prober. Os-prober:

Description: utility to detect other OSes on a set of drives This
package detects other OSes available on a system and outputs the
results in a generic machine-readable format.

Take a look in /usr/bin there is a shell-skript from package os-prober.

You can remove the executable flag from the skript, Or deinstall os-prober.

Edit: Wrong place I mean /usr/bin/os-prober. Nott in /etc/grub.d

I was able to remove entries generated by os-prober using following Grub configuration:

1.Check UUIDs for the disks using the command:

sudo blkid

2.Update /etc/default/grub file by adding the line:

GRUB_OS_PROBER_SKIP_LIST="UUID_OF_DISK_YOU_DONT_WANT_SCAN1 UUID_OF_DISK_YOU_DONT_WANT_SCAN2"

3.Regenerate Grub configuration:

sudo grub2-mkconfig -o /boot/grub2/grub.cfg

NOTE: grub2-mkconfig due to some reasons still displays information about the ignored disk, but it wasn't generated to final /boot/grub2/grub.cfg file.