Windows 10: Grub Launcher upon boot into bootcamp Windows 10

So I booted my 2013 Mac book Air today and was greeted with the grub rescue terminal. I was given no errors or context. Since this has happened on my PC in the past, I have tried

• Using the Windows Rescue tool with the boot fixer
• Using bootrec on the usb terminal
• Using diskpart on the usb terminal
• setting the root, boot, and prefix w/ insmod on the grub launcher

But none of these have worked. What may have caused this is that earlier I installed a copy of Ubuntu onto a portable hard drive from a live usb, but I don't think that should have interacted with my C drive. If anyone could help me, I would greatly appreciate!

MacOS boots normally.

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:)

 

GRUB loaded error

When I go to boot suse 10.2 with grub, after the bios checking It just displays; "LI." and stops. It just says LI and stops. I now boot with a install disk, then just choose boot from harddrive and it works. Any suggestions?

 

Starting Problem in Windows 10, grub issue

Thank you for posting back.

This might require fixing the boot record of the partition and the MBR of the disk where the partition is placed. Try this steps to run a repair:

1. Open Command Prompt as admin.
2. Enter (or copy and paste) this command-line.

Code:

bootsect /nt60 drive_letter: /mbr
Replace [i]drive letter[/i] with your actual driver letter.

Example: bootsect /nt60 c: /mbr

You can also refer to this thread
for further information on how to remove grub boot loader.

Let us know if you need further assistance.

 

Remove Grand Unified Boot Loader (GRUB) from Windows 10

I had that issue when Grub was deposited on my SSD when I had installed a Linux distro to a USB using Live Linux.

I followed the above and it didn't work, so despite installing windows again, the following below worked for me (Dell Inspiron 3148 notebook). Differences in latest version of Windows 10: CommandPrompt (Admin) is now PowerShell (Admin), and I found I had
to omit the /S when I removed the ubuntu boot directory, so I typed rmdir ubuntu It is copied and pasted from the Ask Ubuntu forum.

This answer is for those with UEFI who have deleted the Ubuntu partitions before removing grub

You will be doing this from Windows 10. No bootable media required.

Where bootrec /fixmbr, bootsect /nt60 and the Ubuntu live with the boot-repair suggestions have failed, this has worked for me:

(This answer borrowed verbatim from here)

• Run a cmd.exe process with administrator privileges
• Run diskpart
• Type: list disk then sel disk X where X is the drive your boot files reside on
• Type list vol to see all partitions (volumes) on the disk
• Select the EFI volume by typing: sel vol Y where Y is the SYSTEM volume (this is almost always the EFI partition)
• For convenience, assign a drive letter by typing: assign letter=Z: where Z is a free (unused) drive letter
• Type exit to leave disk part
• While still in the cmd prompt, type: Z: and hit enter, where Z was the drive letter you just created.
• Type dir to list directories on this mounted EFI partition
• If you are in the right place, you should see a directory called EFI
• Type cd EFI and then dir to list the child directories inside EFI
• Type rmdir /S ubuntu to delete the ubuntu boot directory

Assuming you only ever had two operating systems (Win 10 & Ubuntu) you should now be able to boot directly to Windows without hitting the black grub screen.