From reading over the comments on grub rescue this seems like it'll work then you can get into windows and reinstall the windows bootloader into the MBR. This only works however if your windows partition is the first partition on the drive AND it's on the first drive that the computer sees. Add Windows 7 to boot menu. Ask Question. Grub chainloader doesn't work with Windows 8. Add “Windows To Go” external HDD to grub2 boot menu-1. How do I add windows 7 on a new hard drive to grub. Dual boot between ubuntu 18.04 and windows 7 boots straight into ubuntu. Mar 23, 2014  Re: Solved Chainload Windows8 UEFI with Grub2-efi You might want to consider using something other than GRUB 2, which is difficult to configure. Both gummiboot. Booting a MS Windows OS using GRUB is a quite simple process. However, we must follow some rules in order to succeed. The first and foremost rule is: Windows OS always wants to be installed on a first hard drive and first partition. If you have your windows installation on second hard drive you need. Mar 28, 2018  grub4dos with windows 10 installer - posted in Grub4dos: Hi there, I would like to have an installer of my windows 10 ISO, all good so far, but when it goes to install I got this https://bit.ly/2GlyDhR. The chainloader command (see chainloader) is used to set this up. It is normally also necessary to load some GRUB modules and set the appropriate root device. Putting this together, we get something like this, for a Windows system on the first partition of the first hard disk.

Active3 years, 3 months ago

I currently have grub2 installed on a Baytrail tablet along with Ubuntu 14.10 (64-bit) and Windows 8.1 (32-bit). The tablet comes with 32-bit UEFI only firmware, and a 64-bit atom processor.

Using Grub2 (IA32) I can boot any number of 64-bit linux os's, but I've yet to find clear instructions on how to chainload a windows 7/8 installer using the Grub command line.

As of now, I have a (legally obtained) Windows 7 'Home Premium' recovery ISO made into a bootable USB drive.

Does anybody have clear and concise instructions on how to boot/chainload a windows 7 installer from a USB drive, using the Grub2 command line?

UlincsysUlincsys

1 Answer

Just have been there too (where you are right now)And if you tablet is a Toshiba 10'.. we are brothers in arms.. ;-)

Just add this entry to your GRUB2 menu

ZEEGrub Chainloader WindowsZEE
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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. For more information on Grub2, please refer to the GNU GRUB Manual.

Grub2 also supports installation on many operating systems such as Ubuntu, Linux distributions and including Windows. This article will guide you how to install Grub2 from Windows. AIO Boot also uses Grub2, which saves you a lot of time.

Download

You can download Grub2 source code for all platforms here. For Windows, you should download the latest version of Grub2 here. It supports Windows 7, 8, 8.1 and Windows 10, not yet tested on Windows XP.

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Once downloaded, you need to extract the downloaded file above. Here I will extract the grub-2.02-for-windows directory to the C: drive.

Install Grub2

We will now start installing Grub2. You can install Grub2 for USB, or HDD, or even a memory card.

  1. Run Command Prompt under Admin and go to the grub-2.02-for-windows directory that you extracted above.
  2. Check the number of hard disk you will install, be it USB or HDD. Run diskmgmt.msc to open Disk Management.
  3. Grub2 for Windows supports installation and boot on three platforms: i386-pc, x86_64-efi and i386-efi. If you want to boot Grub2 in UEFI mode, you need to create a partition formatted as FAT32.
  4. Install Grub2 for BIOS (i386-pc):
    • Number 2 in the above command is the number of the hard disk that we checked in step 2.
    • G: is the drive of one of the partitions of the hard disk above.
  5. Install Grub2 for UEFI 64-bit (x86_64-efi):
  6. Install Grub2 for UEFI 32-bit (i386-efi):

    For UEFI, you need to specify a drive of the FAT32 partition at the –efi-directory parameter. If it does not support UEFI, Grub2 will report an error: grub-install.exe: error: F: doesn’t look like an EFI partition.

  7. Output results:
  8. If you want to change the path of the grub directory, change the value of the –boot-directory parameter. For example, if you want the grub directory located in YourName, use –boot-directory=G:YourName.
  9. You have now completed the installation of Grub2. Please restart your computer for testing.

Grub Chainloader Windows 10

Configuration

Grub Chainloader Windows 10 Uefi

The configuration file for Grub2 is grub.cfg, which is stored in the grub directory. This file includes all Grub2 configurations, including interface, fonts and menus.

You can create this file for yourself. Or download my grub.cfg file here and copy it into the grub directory.

Here I will open the grub.cfg file to add two menus: Restart and Power Off.

Wish success!