What should be included in a custom menu in GRUB 2?
As a minimum, a valid menuentry should include: 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.
What are the variables in the Grub file?
The /etc/default/grub file contains most of the user-defined variables such as display time, menu resolution and default menuentry. Most custom menu users will want to allow these components to continue to operate normally.
Where are the kernel files located in GRUB2?
The two scripts which actually place items into the menu are /etc/grub.d/10_linux, which locates kernels in the default Ubuntu partition, and /etc/grub.d/30_os-prober, which builds entries for operating systems found on other partitions. For information on these files/folders please refer to the Grub2 page.
Why is there no argument specified in Grub?
Using “–set” rather than “–set=root” in GRUB 1..99 will result in an ” error: no argument specified ” message. The root reference in in the linux line should point to the system partition. If GRUB 2 cannot find the referenced kernel, try replacing the UUID with the device name (example: /dev/sda6 ).
Which is the default image for Grub early initrd?
‘ GRUB_EARLY_INITRD_LINUX_CUSTOM ’ is for your custom created images. The default stock images are as follows, though they may be overridden by your distribution:
Which is the default file for Grub mkconfig?
The file /etc/default/grub controls the operation of grub-mkconfig. It is sourced by a shell script, and so must be valid POSIX shell input; normally, it will just be a sequence of ‘KEY=value’ lines, but if the value contains spaces or other special characters then it must be quoted.