NAME

efistubmgr — generate EFISTUB boot entries

SYNOPSIS

DESCRIPTION

The efistubmgr utility generates EFI boot entries for the Linux kernel as an EFI executable (EFISTUB).

Internally, efistubmgr uses efibootmgr(8) to add and remove EFI boot entries.

Command line options override options from the configuration file. The options are as follows:

-d disk, --disk disk

Set the disk containing the EFI system partition (defaults to /dev/sda).

-h, --help

Print the help message and exit.

-p partition, --part partition

Set the partition number containing the EFI system partition (defaults to 1).

-v, --version

Print version information and exit.

--fake

Print what would be executed on the invocation of efistubmgr without adding or modifying EFI boot entries. This option is useful for debugging and testing changes to /etc/efistubmgr.conf.

entry ...

Entries to regenerate.

FILES

/etc/efistubmgr.conf

The default efistubmgr configuration file. See efistubmgr.conf(5) for more information.

EFI System Partition

This partition (also called ESP) contains the boot loaders and kernel images for all installed operating systems. By default efistubmgr uses /dev/sda. efistubmgr sets the kernel and initramfs values for boot entries to files inside this partition.

One can find the EFI system partition by locating the partition with type EFI System, for example, by running the below command as root and looking for the partition in the list.

# fdisk -l /dev/sda

EXIT STATUS

The efistubmgr utility exits 0 on success, and >0 if an error occurs. It can fail for any of these reasons:

• The configuration file /etc/efistubmgr.conf was invalid.
• No boot entries were specified in /etc/efistubmgr.conf.
• efibootmgr(8) was not installed.

SEE ALSO

efistubmgr.conf(5), efibootmgr(8)