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For example if I have more than one linux kernel I like to boot and I maintain my own /boot properly...I don't want the list collapsed. I want to choose the appropriate installation(one for opencl, one for wireless stuff, one for common usage, one for anonymity, etc).

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I'm not sure about where to find it in /etc/default/grub etc but if you look at the actual /boot/grub/grub.cfg it will have entries starting with submenu. I guess you just remove that line and leave the regular menuentry etc. – duffydack Dec 25 '11 at 23:20
thx. i'm looking at playing with 41_custom instead of removing the submenu since it seems to scale/last through updates. i'll take a look at that though – RobotHumans Dec 25 '11 at 23:27
I have just seen submenu entries in /etc/grub.d/10_linux. might be worth a look/play. – duffydack Dec 25 '11 at 23:29
up vote 1 down vote accepted

edit /etc/default/grub

# graphical
gksu gedit /etc/default/grub

# command line
sudo -e /etc/default/grub

Comment out the HIDDEN_MENU option

# change the time out to something other then 0

# comment out #GRUB_HIDDEN_TIMEOUT

Update grub

sudo update-grub

For additional information on grub see Ubuntu wiki grub 2

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ty, i gave it the check since it is exactly what i asked for. does this persist through a grub update? – RobotHumans Dec 25 '11 at 23:29
yes it will persist – bodhi.zazen Dec 25 '11 at 23:31
I thought you wanted the list to show all kernels in 1 long list and not submenu. Sorry, if I'd known all you wanted was to just show the list at all. – duffydack Dec 25 '11 at 23:34
thx again @bodhi.zazen – RobotHumans Dec 25 '11 at 23:41
Sorry, it doesn't work for me. I see exactly the same menu as before... – Avio May 29 '12 at 13:58

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