From Newsgroup: alt.os.linux.ubuntu
On 10/15/2023 3:29 AM, bilsch01 wrote:
I deleted 2 ext4 partitions and extended my ntfs (Windows) partition by additional 98 GiB, which left about 45 GiB space at the end of the SSD.
Next, I installed Ubuntu 22.04.3 at the end of the SSD using the 22.04.3 installer on a thumb drive. This gave me back my boot menu, which had disappeared when I deleted Ubuntu - good.
The new boot menu has no option to enter EFI setup. I really want that option on the menu - I really want that. Someone suggested this problem might be because I booted my Ubuntu 22.04.3 installer in 'compatibility' mode, instead of EFI mode. They said if Ubuntu does not have the directory
sys.firmware.efi
then I must have booted the installer in compatibility mode. However I DO have directory
sys.firmware.efi. Furthermore, nowhere do I find an option to choose "compatibility" or "EFI" when booting the Ubuntu installer.
Can anyone tell me how to add the EFI option to the (grub) boot menu.
TIA. Bill S
https://www.baeldung.com/linux/grub-bootloader-add-new-os
"
$ sudo cat /etc/default/grub | grep 'GRUB_DISABLE_OS_PROBER'
GRUB_DISABLE_OS_PROBER=true
If we get false, then it shows os-prober is active. That example needs to be changed.
# sudo update-grub
"
apt search os-prober
sudo apt install os-prober # If it is not currently installed
That's the kind of material, to make GRUB pick up windows OSes.
Check your os-prober, before doing the update-grub.
[Picture]
https://i.postimg.cc/WzrWxRY7/Boot-Menu-Multiboot-Mix.gif
This is what the update-grub looks like, when I run it there.
This would correspond to the provided [Picture].
bullwinkle@CRUISE:~$ sudo update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/50_linuxmint.cfg'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.15.0-86-generic \
Found initrd image: /boot/initrd.img-5.15.0-86-generic \
Found linux image: /boot/vmlinuz-5.15.0-76-generic \
Found initrd image: /boot/initrd.img-5.15.0-76-generic \___ 21.2 material Found linux image: /boot/vmlinuz-5.15.0-73-generic /
Found initrd image: /boot/initrd.img-5.15.0-73-generic /
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 Windows Boot Manager on /dev/sda1@/EFI/Microsoft/Boot/bootmgfw.efi
Found Linux Mint 21.1 Vera (21.1) on /dev/sda5
Adding boot menu entry for UEFI Firmware Settings ...
done
bullwinkle@CRUISE:~$
Paul
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