What is the GRUB2 boot screen used for?
GRUB2 allows you to set a password that must be entered to change these settings. This helps keep your system safe and secure from someone who may have physical access to your machine. An example of this being used is blocking USB devices from booting up on the system.
Where do I put GRUB2 for dual boot?
There are setups where one might install something other than Grub2 to the MBR (say grub legacy) and have that load Grub2 which is installed in the PBR of one of the partitions. In general however, it is recommended to install Grub2 to the MBR using /dev/sd[a-z] . This option is required for all forms of the command.
What type of software is GRUB2?
GNU GRUB
| GNU GRUB logo | |
|---|---|
| GRUB v2 running in text mode | |
| Type | Bootloader |
| License | GPLv3 |
| Website | www.gnu.org/software/grub/ |
What does a bootloader do?
A bootloader is a vendor-proprietary image responsible for bringing up the kernel on a device. It guards the device state and is responsible for initializing the Trusted Execution Environment and binding its root of trust.
How does GRUB 2 search for other operating systems?
Automated searches for other operating systems, such as Windows, are accomplished whenever update-grub is executed. Operating systems found will be placed in the Grub 2 menu. Changes made in the configuration files will not take effect until the update-grub command is executed.
Where are the configuration scripts in GRUB 2?
Configuration changes are normally made to the /etc/default/grub file and to the custom scripts located in /etc/grub.d. No changes are made to the GRUB 2 menu until the update-grub command is run as root. This command runs the GRUB 2 configuration scripts and updates the /boot/grub/grub.cfg file.
Which is the latest version of Grub in Ubuntu?
To determine your version, use grub-install -V. Grub version 1.99 became the default on Ubuntu 11.04 (Natty Narwhal) and introduced some major changes in the Grub file contents. This guide covers the use of Grub 1.98, the Grub release found in Ubuntu 10.04 LTS (Lucid Lynx). and Grub 1.99, packaged with Ubuntu 12.04 LTS (Precise Pangolin).
Can you upgrade from Grub 0.97 to GRUB 2?
Upgrading to GRUB 2 From GRUB. GRUB 2 is the default bootloader for Ubuntu. Users who still have Grub 0.97 installed on their Ubuntu systems can upgrade to GRUB 2 by installing the currently-supported releases of Ubuntu or by enabling repositories which contain the GRUB 2 package grub-pc.