Thanks a lot. Here is /etc/default/grub
Code:
less /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`( . /etc/os-release; echo ${NAME:-Ubuntu} ) 2>/dev/null || echo Ubuntu`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
# If your computer has multiple operating systems installed, then you
# probably want to run os-prober. However, if your computer is a host
# for guest OSes installed via LVM or raw disk devices, running
# os-prober can cause damage to those guest OSes as it mounts
# filesystems to look for things.
#GRUB_DISABLE_OS_PROBER=false
# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
# Uncomment to disable graphical terminal
#GRUB_TERMINAL=console
# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"
# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
~
~
~
~
The second command does not work
Code:
sudo apt update-grub
E: Invalid operation update-grub
I did
Code:
sudo update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/oem-flavour.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.14.0-1049-oem
Found initrd image: /boot/initrd.img-5.14.0-1049-oem
Found linux image: /boot/vmlinuz-6.8.0-44-generic
Found initrd image: /boot/initrd.img-6.8.0-44-generic
Warning: version_find_latest() is deprecated. Use version_sort() instead.
Warning: version_test_gt() is deprecated. Use version_sort() instead.
Warning: version_test_gt() is deprecated. Use version_sort() instead.
Warning: version_test_numeric() is deprecated. Use version_sort() instead.
Found linux image: /boot/vmlinuz-5.14.0-1049-oem
Found initrd image: /boot/initrd.img-5.14.0-1049-oem
Warning: version_find_latest() is deprecated. Use version_sort() instead.
Warning: version_test_gt() is deprecated. Use version_sort() instead.
Found linux image: /boot/vmlinuz-6.8.0-44-generic
Found initrd image: /boot/initrd.img-6.8.0-44-generic
Found memtest86+ 64bit EFI image: /boot/memtest86+x64.efi
Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.
Adding boot menu entry for UEFI Firmware Settings ...
done
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