Can I install GRUB from Windows?

Grub2 is a very powerful boot loader, developed by GNU. You can easily install Grub2 from Windows with just a few commands. Grub2 supports both UEFI and Legacy BIOS modes. It is capable of booting most Windows, Linux, BSD and macOS operating systems.

How do I manually install GRUB bootloader?

Installing GRUB2 on a BIOS system

1. Create a configuration file for GRUB2. # grub2-mkconfig -o /boot/grub2/grub.cfg.
2. List block devices available on the system. $ lsblk.
3. Identify the primary hard disk.
4. Install GRUB2 in the MBR of the primary hard disk.
5. Reboot your computer to boot with the newly installed bootloader.

Can you install GRUB without Linux?

Yes it is. G As GRUB is a stand-alone boot loader and can be installed onto a computer that doesn’t have Linux installed, to boot those operating systems that are installed.

How do I restore a GRUB file after installing Windows 7?

To recover grub: Open the live version. Open the terminal and run sudo fdisk -l to see where Linux is installed….6 Answers

1. Boot from LiveCD ⋯ please try to use a LiveCD that has the same version of Grub2 as the installed version.
2. Mount the root of the installed Ubuntu at /mnt.
3. Change root.
4. Update grub.
5. Install grub.
6. Reboot.

How do I fix Windows bootloader?

Method 1: Startup Repair tool

1. Start the system to the installation media for the installed version of Windows.
2. On the Install Windows screen, select Next > Repair your computer.
3. On the Choose an option screen, select Troubleshoot.
4. On the Advanced options screen, select Startup Repair.

How do I install grub menu?

via Partition Files Copy

1. Boot to the LiveCD Desktop.
2. Mount the partition with your Ubuntu installation.
3. Open a terminal by selecting Applications, Accessories, Terminal from the menu bar.
4. Run the grub-setup -d command as described below.
5. Reboot.
6. Refresh the GRUB 2 menu with sudo update-grub.

Where is GRUB Disk installed?

The GRUB 2 files will normally be located in the /boot/grub and /etc/grub. d folders and the /etc/default/grub file in the partition containing the Ubuntu installation. If another Ubuntu/Linux distribution controlled the boot process, it will be replaced by the GRUB 2 settings in the new installation.

Should I install GRUB bootloader?

You don’t actually need GRUB (Grand Unified Boot Loader) boot loader as it is by default boot loader and manager for Ubuntu since version 9.10. If you look into the booting process, after BIOS and MBR, GRUB gives you the option of choosing your kernel.

Can Windows 7 boot from grub?

Boot your system to the GRUB menu. Select (highlight) the GRUB boot menu entry Windows 7 (loader) (on /dev/sda1) . Press e to edit the GRUB boot commands for Windows 7.

Can I continue without a bootloader?

Since version 3.3. x, and ONLY on EFI machines, it is possible to boot the Linux kernel without using a bootloader. Have a look at Booting the Linux Kernel without a bootloader.

How do I get Ubuntu back after installing Windows?

The graphical way

1. Insert your Ubuntu CD, reboot your computer and set it to boot from CD in the BIOS and boot into a live session. You can also use a LiveUSB if you have created one in the past.
2. Install and run Boot-Repair.
3. Click “Recommended Repair”.
4. Now reboot your system. The usual GRUB boot menu should appear.

How do I reinstall grub from USB?

How to Repair Grub

1. Boot to the live cd or USB that you have and open a terminal window( Ctrl + T ) and type the following: sudo fdisk -l.
2. Now you are sure about where to install grub.
3. sudo mount /dev/sda3 /mnt , where /mnt is any directory you need.

How do I boot Windows 7 using GRUB?

Currently, your grub.cfg uses the GRUB boot commands below to boot Windows 7. I am suggesting you try changing this and use these commands instead. Here are the steps to do this. Boot your system to the GRUB menu. Select (highlight) the GRUB boot menu entry Windows 7 (loader) (on /dev/sda1).

How do I install a grub-based bootloader?

EasyBCD can automatically install a GRUB-based bootloader called NeoGrub. It’ll be chainloaded from the Windows bootloader, and you can edit its configuration file from within Windows; it also supports NTFS so you can save the kernel to the NTFS partition and load it from there.

How do I add a custom entry to the Grub config file?

Run the command sudo update-grub to update /boot/grub/grub.cfg to include your customized entry. (It will be on the bottom of the GRUB menu when you boot.) I would view the suggestion above as only a partly-baked solution.

How do I start Ubuntu on GRUB2?

The above steps are from near the bottom of the Ubuntu Community Documentation of Grub2 After booting from the liveCD ( select “Try Ubuntu” on the opening screen) Then start up a terminal (dash, type-in terminal, … )… It may be easier to open this web page while running LiveCD.