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I have been looking for the GRUB configuration file, and I haven't had much luck. According to the sites I found, it should be at '/boot/grub/menu.lst'. But, I went to that file path, and could not find menu.lst. Can anyone tell me why it isn't there, and where I might locate it? I would like to change the default system to boot, but I cannot find any related files to help me.

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up vote 8 down vote accepted

Recent releases of Ubuntu have migrated to GRUB2. From the wiki:

Configuring GRUB 2

Important note: Configuration changes are normally made to /etc/default/grub and to the custom files located in /etc/grub.d. The /boot/grub/grub.cfg file should not be edited by the user; changes to this file are made by configuration scripts. After editing /etc/default/grub, you need to run sudo update-grub for your changes to take effect on the next boot.

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I tried editing the file in etc/default, but it is read-only. Then, when I tried changing it, it told me I did not have permissions to do so. Is there something else I need to change? –  B3tturTh3nU Nov 26 '10 at 22:35
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@B3tturTh3nU: You need to edit the file with root privileges. Use gksudo gedit /etc/default/grub or sudoedit /etc/default/grub or sudo nano /etc/default/grub. Careful with the editing! :) –  Sid Nov 26 '10 at 22:44
    
Okay, thanks. I got it to work. –  B3tturTh3nU Nov 26 '10 at 22:47
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