grub2 - No grub menu at boot - Ask Ubuntu

i cannot grub menu. holding/pressing shift yields grub loading boots normal. have edited /etc/default/grub correctly (hidden_timeout commented out , grub_timeout=10) have tried escape nothing happens. have tried boot repair did not help.

try this:

open terminal,

press ctrl+alt+t

run it:

exec sudo -i nano  /etc/default/grub 

in open file these lines shown

grub_default=0 grub_hidden_timeout=5 grub_hidden_timeout_quiet=true grub_timeout=10 grub_distributor=`lsb_release -i -s 2> /dev/null || echo debian` grub_cmdline_linux_default="quiet splash" grub_cmdline_linux="" 

you should leave them this:

grub_default=0 #grub_hidden_timeout=5 grub_hidden_timeout_quiet=true grub_timeout=15 grub_distributor=`lsb_release -i -s 2> /dev/null || echo debian` grub_cmdline_linux_default="quiet splash" grub_cmdline_linux="" 

ctrl+o save file ctrl+x close nano

continue running:

update-grub 

you when restarting should see grub menu