Ubuntu offers a recovery mode in its default
Grub boot menu — select Advanced options for Ubuntu and select Recovery mode.
If
the Grub boot menu is locked and password - protected, you can still boot to Linux live media and change your password from there.
If you use Linux, the BIOS will find and boot
the GRUB boot loader, which most Linux distributions use.
The shim is a small boot loader that simply boots the Linux distributions main
GRUB boot loader.
After deleting the partitions,
the GRUB boot loader won't boot your computer properly.
This process is different from restoring the legacy
GRUB boot loader on older Linux distributions.
Not exact matches
When you
boot up your Mac, do you get some kind of
grub bootloader, or have you tried holding the Option key while
booting without the USB inserted?
You can customize
Grub's options, including which operating system is the default and how long
Grub2 waits until it automatically
boots that default operating system.
You also have to restore the Windows
boot loader yourself, since Linux overwrites the Windows
boot loader with its own
boot loader, known as «
GRUB.»
Timeout: This is the countdown (in seconds) that
GRUB waits before automatically
booting the default operating system.
Super
Grub Disk, a boot utility that can restore and repair overwritten and misconfigured GRUB installs or directly boot various operating sys
Grub Disk, a
boot utility that can restore and repair overwritten and misconfigured
GRUB installs or directly boot various operating sys
GRUB installs or directly
boot various operating systems
You can change its settings to select a default operating system, set a background image, and choose how long
GRUB counts down before automatically
booting the default OS.
Assuming you're using Ubuntu, you can install the
Grub - Customizer tool from this PPA and use the graphical interface to rename the
boot entry.
Unfortunately, the Rescue Mode partition doesn't work with Windows PCs that use Secure
Boot, or with some multiplatform setups, such as those that use the
GRUB bootloader software.
Not only does this mean Secure
Boot isn't a security feature for Ubuntu users, it also means that a hacker could actually use Ubuntu's trusted bootloader to boot untrusted malware on almost any Secure Boot - enabled PC: The Grub bootloader used by Ubuntu has a way to boot Windows, making it possible to attack Secure Boot - enabled Windows syst
Boot isn't a security feature for Ubuntu users, it also means that a hacker could actually use Ubuntu's trusted bootloader to
boot untrusted malware on almost any Secure Boot - enabled PC: The Grub bootloader used by Ubuntu has a way to boot Windows, making it possible to attack Secure Boot - enabled Windows syst
boot untrusted malware on almost any Secure
Boot - enabled PC: The Grub bootloader used by Ubuntu has a way to boot Windows, making it possible to attack Secure Boot - enabled Windows syst
Boot - enabled PC: The
Grub bootloader used by Ubuntu has a way to
boot Windows, making it possible to attack Secure Boot - enabled Windows syst
boot Windows, making it possible to attack Secure
Boot - enabled Windows syst
Boot - enabled Windows systems.
This option isn't necessary, as you can just press the e button to edit Ubuntu's
boot options and
boot directly to a root shell prompt from within the main
Grub menu.