Operation Manual
To edit individual menu entries directly, press Esc to exit the splash screen and get to
the GRUB2 text-based menu then press E. Changes made in this way only apply to the
current boot and are not adopted permanently.
NOTE: Password-protected Bootloader
If you protected you bootloader with a password as described in Section 10.2.7,
“Setting a Boot Password” (page 185), you need to rst enter the specied
username and password to “unlock” the bootloader.
IMPORTANT: Keyboard Layout during the Boot Procedure
The US keyboard layout is the only one available when booting. See Figure “US
Keyboard Layout” (↑Start-Up).
Conguration options and commands related to the selected boot entry appears in a
simple text editor interface. Use arrows to move in the text and modify the menu entry
as desired. The TAB key suggests possible completions, while ESC discards all changes
and returns to the GRUB2 menu. Once you nish editing the menu-entry, press F10 to
boot it.
10.2.7 Setting a Boot Password
Even before the operating system is booted, GRUB2 enables access to le systems.
Users without root permissions can access les in your Linux system to which they
have no access once the system is booted. To block this kind of access or to prevent
users from booting certain operating systems, set a boot password.
IMPORTANT: Boot Password and Splash Screen
If you use a boot password for GRUB2, the usual splash screen is not displayed.
As the user root, proceed as follows to set a boot password:
1
At the root prompt, encrypt the password using grub2-mkpasswd-pbkdf2:
# grub2-mkpasswd-pbkdf2
Password: ****
Reenter password: ****
The Boot Loader GRUB2 185