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Can you boot Windows from GRUB?
In particular, Windows has its own boot loader and Linux uses GRUB. It’s easiest to have a dual boot system when GRUB is used as the boot loader, as it can be easily configured to boot into Windows as well as Linux.
Does GRUB overwrite Windows bootloader?
If you have tried to dual boot your Windows system with Linux, then you have probably encountered some changes that may not be welcome. When installing Linux in this environment, the GRUB bootloader will overwrite the Windows bootloader within the Master Boot Record (MBR).
How can I prevent Windows from overwriting GRUB?
Best Answer
- Boot from a live CD (CD/DVD or flash drive).
- Become root or use sudo with commands below.
- List the available partitions if needed: fdisk -l.
- Windows will almost certainly exist on /dev/sda1: mount /dev/sda1 /mnt.
- Reinstall GRUB in the MBR: grub-install –root-directory=/mnt/ /dev/sda.
- Reboot: shutdown -r now.
Why is my grub not showing Windows boot?
Still, you are facing the problem, which means the Grub menu is unable to show the Windows boot option. If this is the case with you, there is quite a simple solution to get out of this problem, the bootloader can be brought back as well as the Windows Boot Option into the OS Selection menu at the time of system startup.
Why do I get Grub rescue when I restart my computer?
If you are using such dual boot system, it is advised that do not let use your pc used by anyone else. Whatever the reason is, deleting the Ubuntu partition will definitely mess up the Windows Boot Manager. So, while the Linux partition is deleted from the HDD and the user restart the pc, he/she will end up in the grub rescue prompt by default.
How to update Grub in Ubuntu dual boot?
Switch on the pc and try to boot into Ubuntu OS normally When at the desktop, launch the Linux command Terminal by pressing Ctrl+Alt+T Type the given command in the terminal window, “ sudo update-grub” Type in your own sudo password when asked by the system, to execute your command. For reference, you can see the given image below
How do I run grub as an administrator?
In Windows, go to the menu. Search for Command Prompt, right click on it to run it as administrator. This is strictly for Ubuntu. Other distributions might have some other folder name. You don’t need to enter a password or anything like that. The command should run just fine given that your account has admin rights.