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How to configure GRUB2 boot loader settings in Ubuntu?
The /boot/grub/grub.cfg file is automatically generated by grub-mkconfig using templates from /etc/grub.d and settings from /etc/default/grub. Any changes you made in in /etc/default/grub file will be reflected to the GRUB2.
How to create grub.cfg file in boot / GRUB2?
Use the grub2-mkconfig command to generate grub.cfg. This command uses the template scripts in /etc/grub.d and menu-configuration settings taken from /etc/default/grub when generating grub.cfg. – The /etc/grub2.cfg file is a symbolic link to /boot/grub2/grub.cfg.
How to boot Windows XP from GRUB2 command line?
Use the ntldr command to load this file. For Windows XP/2003, you will find the partition that contains /NTDETECT.COM and load the /ntldr file. You need to use the drivemap command to MAP the hard disk on which you installed Windows XP/2003 as the first hard disk if it is not.
How to change the default Grub settings on GRUB2?
In other words, to customize your GRUB2 settings, you’ll have to edit the /etc/default/grub file and then run the sudo update-grub command. Edit the GRUB Configuration File RELATED: A Beginner’s Guide to Editing Text Files With Vi Open the /etc/default/grub file for editing in a standard text editor.
How to fix grub not loading config file?
I’ve tried rerunning grub-install /dev/sda, recreating the config file with grub-mkconfig, and using the Ubuntu boot repair gui tool – none of these have worked. Is there any way to fix this short of reinstalling either or both OSs?
How can I load Linux from Super Grub?
Using the arrow key, select the operating system that wouldn’t load previously. Note: Super Grub Disk can usually load a broken Linux distribution because it finds files like the boot image, instead of Grub configuration files. In rare cases, even this tool will not be able to load broken operating systems.
What’s the default OS to boot in Grub?
Open /etc/default/grub file using any text editor, for example nano. Find the line “GRUB_DEFAULT”. We can select the default OS to boot using this option. If you set the value as “0”, the first operating system in the GRUB boot menu entry will boot.