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I am running Ubuntu 12.04.

I cannot for the life of me get the grub menu (with options) to go away.

I would like it to auto-boot into the first option. I've edited /etc/default/grub so that it looks like the following:

GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
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=""

After this, I ran sudo update-grub. Then I realized that I had grub 2, so I ran sudo update-grub2 (both make it look like they create the grub.cfg file successfully.

I restart my computer and it goes back to the grub menu and just sits there until I make a choice. This is not desirable if the power goes out... :-)

I also tried reinstalling grub using sudo grub-install /dev/sda - also unsuccessful

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Do you by any chance have another partition that you installed Ubuntu to after setting up the current partition that you now wish to boot into automatically? –  fabricator4 Oct 18 '12 at 2:48
    
I'm not sure what you mean, I'm kind of new to linux. I did install over a previous Ubuntu installation, but I did not upgrade. Clean install. I may have mucked something up partition-wise... that's possible, any ideas on fixing it? –  Eric Oct 18 '12 at 4:20
    
sudo update-grub and sudo update-grub2 runs the same command. So, don't worry about that part. –  saji89 Oct 18 '12 at 6:01
    
Please you post the output of cat /boot/grub/grub.cfg via pastebin and share the link here. This is to see the actual grub.cfg generated. –  saji89 Oct 18 '12 at 6:03
    
Here's the pastebin: pastebin.com/xxe2rLhg of grub.cfg. Thanks for all your help! –  Eric Oct 18 '12 at 13:39
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4 Answers 4

As other answers point out, you may be a victim of the recordfail situation. Editing /boot/grub/grub.cfg manually should be out of the question as is automatically generated. Another suggestion seen around is to edit the /etc/grub.d/00_header but then it could prompt for user intervention on updates.

The easiest solution is to define the undocumented GRUB_RECORDFAIL_TIMEOUT variable in /etc/default/grub. For example:

GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=5
GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT

Edit

See this answer for more details.

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Thank you very much, this is exactly what I was looking for! –  Avio Oct 17 '13 at 11:59
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Use:

grub-editenv create

This will clear grub environment file and should boot clearly the next time.

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+1 for elegant solution –  Coc Jan 10 at 13:27
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I had the problem that the grub menu appeared always after I used the AUFS (unionfs) to put the root filesystem readonly. I had phisically to hit the enter key at the server after every boot. I followed the instructions here : disable grub 2 menu. Since, I had no problems at all.

Edit the /boot/grub/grub.cfg and change:

if [ ${recordfail} = 1 ]; then
  set timeout=-1
else
  set timeout=10
fi

To

if [ ${recordfail} = 1 ]; then
  set timeout=1
else
  set timeout=10
fi
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change the GRUB_TIMEOUT=10 to zero

This is my Configuration file:

GRUB_DEFAULT="Ubuntu, with Linux 3.2.0-30-generic-pae"
#GRUB_HIDDEN_TIMEOUT=10
#GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=1
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""

First, write the name of the OS that you want to boot to directly. Mine is Ubuntu. So you will write it as in the GRUB_DEFAULT="Ubuntu, with Linux x.x.x-xx-generic-pae"

then I used 1 second in the GRUB_TIMEOUT= to give me 1 second before selecting the default OS (if I need to boot to another OS for example Xubuntu)

as for GRUB_CMDLINE_LINUX_DEFAULT="" if you remove quite splash it will show you texts instead of the Ubuntu logo during the booting process (I like it this way :P )


There is another solution:

There is a program called boot-repair which helps in configuring with a GUI.

enter image description here

enter image description here

as you can see from the image. there is a box called Unhide boot menu. Just uncheck the box and press appy. You can access this by clicking on the advanced options arrow.

to install boot repair

sudo add-apt-repository ppa:yannubuntu/boot-repair

sudo apt-get update

sudo apt-get install -y boot-repair

and then run boot-reapir either from the terminal or from the dash.


3rd solution:

ou can use an easy to use GUI app called grub-customizer to make your life a little easy. As the name suggests, you can do much more than just reordering Grub menu entries with it.

You can install it by:

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer

enter image description here

as you can see from the menu there is show menu option. Unhceck and see if it works

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No change. :-/ I thought GRUB_DEFAULT was supposed to be a numeric # according to the list in the menu? Changing GRUB_TIMEOUT to 0 didn't help. –  Eric Oct 18 '12 at 13:28
    
@Eric you can use 2 ways: if you know the place of your OS in the grub list you can use a number. But for me I have 4 Linux distros and 1 Windows plus the memTest and the recovery. So its hard for me to memorize their places :) just to make sure(I know you may have done it but just to make sure :P ). Did you run the grub-update after changing the values ? –  Suhaib Oct 18 '12 at 20:20
    
I did run grub-update after changing the values. :-/ –  Eric Oct 18 '12 at 22:38
    
I installed and used the boot-repair app you provided, it works on the first reboot. After that, the GRUB menu is back and it sits there until I press a key. Thank you for all your help, I really appreciate it. Not sure where to go from here... –  Eric Oct 19 '12 at 0:23
    
@Eric ok I found a 3rd solution check it –  Suhaib Oct 21 '12 at 20:25
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