Hotkeys and Tablet Computers
The hotkey character selects a Grub menu entry with a single keystroke. This is a handy shortcut and saves having to scroll down through the menu entries.
The hotkey character can also be useful on tablets where there is no keyboard. Some tablets will generate a character when you press the volume up, volume down or Windows button.
On some models, the generated hotkey character can be used at boot time to select a Grub menu entry without using a keyboard. This capability is heavily dependent on the firmware of the machine. It varies with the specific brand and model.
GNU Grub does not have native touchscreen support at this time.
Notes: The available hotkey characters include most letters of the alphabet, digits 0 - 9 and the backspace, delete and tab keys.
The letters c, e and v are not available as hotkeys because they are reserved for other Grub boot time functions.
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