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How do I get back to my windows 10 installation or fix the windows 10 boot manager from fedora?

asked 2015-08-26 09:51:21 -0500

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I just completed a dual boot of fedora 22 and windows 10. But, whenever i restart my pc, Windows 10 boot manager doesn't even show up. There are four entries: Fedora, Fedora rescue, windows 8, windows 8 recovery. The last two options result in an error, "\boot\BCD". If i login to Fedora, all the files of windows, windows.old, windows~BT, etc are visible. Please, I have a hunch that it's solvable. Please help me here. Below, I will be attaching a few pictures that I feel will help you to identify the problem I am facing. Let me know if you need more information about disk partitioning and stuff. P.S: I have also tried deleting Fedora and all the partitions associated with it, such as /boot, /biosboot, /swap and /. But, I still can't access my windows 10 installation. Also, I don't want to do a clean install of windows 10, as I will lose all my data and documents. It says I need 60 points to attach pictures. Well, I can't really attach pictures, as of now. But, I will see what I can do. Thanks.

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iirc GRUB doesn't know about the words "Windows 10" so it puts "Windows 8" in the menu. Have you tried booting the windows 8 options?

randomuser gravatar imagerandomuser ( 2015-08-27 08:35:21 -0500 )edit

I have tried booting Windows 8 option and the recovery option. But, no luck. I can't remember the error number but it has something to do with \boot\BCD.

CanuckFan gravatar imageCanuckFan ( 2015-08-28 06:36:26 -0500 )edit

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answered 2015-08-28 08:36:26 -0500

CanuckFan gravatar image

So, here's what I did. I made a bootable USB of fedora. I tried to re-install fedora. For that, I removed all of the previous fedora partitions. And when it says to choose how to partition, I selected the "Automatic Partition" option. It solved everything!!! Now, when I boot up, I am not only able to log in to my Windows 10 OS, but it brings a menu for me to select which OS I want to begin with (Though, I don't really like the user interface of the boot loader that is presented at the start up). But, I can relax a bit now, knowing that both my Operating Systems are functioning the way I wanted them to. I am open to advise on the boot loader issues. Thanks for your suggestions and tips. It meant a lot!! Cheers!!

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So the bootloader works, but you want it to look different?

randomuser gravatar imagerandomuser ( 2015-08-29 01:22:17 -0500 )edit

answered 2015-08-27 14:18:25 -0500

Navalona gravatar image

Download Rescatux and put in a usb drive or burn to a CD. It is a very useful tool for troubleshooting. Cheers,

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What is Rescatux? Please let me know how to use it on fedora? Just making a bootable USB would do? Will it try to re-install GRUB? And what about windows boot loader? Will it be back? (sorry for too many questions)

CanuckFan gravatar imageCanuckFan ( 2015-08-28 06:43:54 -0500 )edit

I installed super Grub2 disk ISO and tried to boot my system. It didn't work. But, it did show up all the boot loaders (including BIOS).

CanuckFan gravatar imageCanuckFan ( 2015-08-28 07:47:11 -0500 )edit

answered 2015-08-27 07:27:03 -0500

PiotrAF gravatar image

In previous version , booting from installation dvd and in cmd : bootrec.exe /fixmbr helped, but I didn't use Windows 10 yet, so I cannot state this would surely help. Search the net with your favorite search engine for "windows 10 restore mbr". For dual boot it is best to have 2 separate disk for each system. This enable you to switch in bios boot which disk to boot as first which is essential for various windows updates which do not install if windows was booted from other os. In any case deleting a linux will never help due to fact that the problem is master boot record (mbr)

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This only applies to BIOS/CSM installations, which most modern computers and any computer sold with windows 8 will almost certainly not be. Take care to identify whether you have a UEFI system; if you do, these instructions will break things.

randomuser gravatar imagerandomuser ( 2015-08-27 08:36:29 -0500 )edit

Mine is a UEFI system. I can see the windows boot loader in /dev/sda2. Somehow, it doesn't show up at the time of startup. Would it make sense if I copied the windows boot loader to the location where fedora has it's loader? I have no idea how it works. I am just getting started with Linux environment. Any help or suggestion would be highly appreciated.

CanuckFan gravatar imageCanuckFan ( 2015-08-28 06:40:14 -0500 )edit

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Asked: 2015-08-26 09:51:21 -0500

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Last updated: Aug 27 '15