Next: , Previous: , Up: Top   [Contents][Index]

28 Invoking grub-install

The program grub-install installs GRUB on your drive using grub-mkimage and (on some platforms) grub-setup. You must specify the device name on which you want to install GRUB, like this:

grub-install install_device

The device name install_device is an OS device name or a GRUB device name.

grub-install accepts the following options:


Print a summary of the command-line options and exit.


Print the version number of GRUB and exit.


Install GRUB images under the directory dir/grub/ This option is useful when you want to install GRUB into a separate partition or a removable disk. If this option is not specified then it defaults to /boot, so

grub-install /dev/sda

is equivalent to

grub-install --boot-directory=/boot/ /dev/sda

Here is an example in which you have a separate boot partition which is mounted on /mnt/boot:

grub-install --boot-directory=/mnt/boot /dev/sdb

Recheck the device map, even if /boot/grub/ already exists. You should use this option whenever you add/remove a disk into/from your computer.