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How do I repair grub?

asked 2016-12-02 23:36:42 -0500

ldco2016 gravatar image

So I had a dual boot machine with Fedora 23 and Windows 7, but in Windows I un partitioned the partition that belonged to Fedora 23, now I get the grub rescue prompt.

I have followed documentation that says that there is a boot-repair where I can restore MBR, but then there are others who say this does not work for fedora.

It is my understanding that there is a way to repair grub so the grub rescue prompt goes away and I can boot back into Windows, but I need the exact instructions to do this. Please help.

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answered 2016-12-03 08:29:24 -0500

ordefa gravatar image

updated 2016-12-03 23:36:29 -0500

If you boot from a windows installation CD you can select "Repair your computer" as pictured in the link below. Once you've accessed the repair console you can use the gui options, or you can open a command line and try "bootrec /fixmbr" and/or "bootrec.exe /fixboot" see below articles for detailed information.

https://www.bleepingcomputer.com/tuto...

http://www.digitalcitizen.life/comman...

There are ways you can edit grub as well, or dual boot without changing the Windows MBR but it sounds like you just want to get into windows. This solution will overwrite the MBR with the Windows bootloader and you'll be back to normal

If you want to edit partitions in the future an easy way to do it is with a bootable Gparted Live CD or USB. You load it up and it lets you play with partitions in a way that won't cause you issues in windows. http://gparted.org/livecd.php

AOMEI partition manager is another nice option. Its Windows only and free of cost. http://www.aomeitech.com/aomei-partit...

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answered 2016-12-04 11:52:11 -0500

deusdara gravatar image

Hi

Super GRUB2 Disk is a live cd that helps you to boot into most any Operating System (OS) even if you cannot boot into it by normal means.

http://www.supergrubdisk.org/super-gr...

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Asked: 2016-12-02 23:36:42 -0500

Seen: 1,019 times

Last updated: Dec 04 '16