What are the steps to edit a GRUB 2 configuration?
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.
Where are grub entries stored?
/etc/default folder
The primary configuration file for changing menu display settings is called grub and by default is located in the /etc/default folder. There are multiple files for configuring the menu – /etc/default/grub mentioned above, and all the files in the /etc/grub. d/ directory.
Where are the Grub files located in GRUB 2?
Old GRUB files were (and still are!) located under /boot/grub/, including the menu.lst file that was read during boot and which contents were displayed to the user in the form of the GRUB menu. GRUB 2 places its files in three core locations: /boot/grub/grub.cfg – This is the main configuration file that replaces menu.lst.
How to create a boot menu in GRUB 2?
10_linux loads the menu entries for the installed distribution. 20_memtest86+ loads the memtest utility. 30_os-prober is the script that will scan the hard disks for other operating systems and add them to the boot menu. 40_custom is a template that you can use to create additional entries to be added to the boot menu.
Can you dual boot grub legacy and GRUB 2?
Dual boot: two operating systems with GRUB legacy & GRUB 2 mix. This is a very interesting case. Let’s say you have two operating systems, like Ubuntu 9.10, which uses the new GRUB 2 and boots from Ext4, and a more classic distro like openSUSE 11.2, which does use Ext4, but still boots the old GRUB.
How are passwords and custommenus work in GRUB 2?
GRUB 2 features such as Passwords and Submenus work in custom menus. If the user doesn’t wish to password-protect all menuentries, the custom menu is an easy way to designate only some of the entries while still allowing the GRUB 2 scripts to operate normally.