Ubuntu
grub2 package

  1. Bug #425979
  2. Comment #26

Comment 26 for bug 425979

Revision history for this message
bolodya (bolodya) wrote : Re: Holding shift fails to display grub2 menu

I had the same problem - cant access to grub menu by esc or shift keys during boot if I tried to hide it (I have windows and ubuntu on one disk).

The reason is one strange condition in /etc/grub.d/30_os-prober script. it bloks hidden menu part of grub.cfg if os-probber found any other os.

So for me works the following:

1. In the file /etc/grub.d/30_os-prober
- comment line 33: if [ "x${found_other_os}" = "x" ] ; then
- and comment closing it "fi" at line 67

2. Sudo updade-grub

After that if you have GRUB_HIDDEN_TIMEOUT >=1 then you can access to grub menu by esc key during this timeout,
if you have GRUB_HIDDEN_TIMEOUT =0 then you can access to grub menu if you press "shift" during grub startup,
and no hidden menu if GRUB_HIDDEN_TIMEOUT =-1.