Ubuntu hide GRUB

# To hide grub replace the content of "example command" sudo gedit /etc/default/grub
# Btw it is good practice to make backup of original file
# If you change this file, run 'update-grub' afterwards to update

#GRUB_DEFAULT="saved"
#GRUB_TIMEOUT_STYLE="hidden"
GRUB_CMDLINE_LINUX=""
GRUB_DEFAULT="0"
GRUB_HIDDEN_TIMEOUT="0"
GRUB_TIMEOUT="0"
GRUB_RECORDFAIL_TIMEOUT="0"
GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
GRUB_DISABLE_OS_PROBER="true"