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Removing GRUB

post #1 of 10
Thread Starter 
I'm a certified noob when it comes to anything Linux, so in my *infinite* wisdom I decided to dual boot Ubuntu on my main Windows 10 machine. Now the problem is that I dislike Ubuntu and want to install Mint elsewhere but can't actually stop GRUB2 booting when the power on test finishes.

I removed Ubuntu by deleting the partitions in Windows disk management then by using Windows command line /bootrec to try to scan for and repair the boot sector but when I did try to scan it found no installations (even though if I exit out of Grub, Win10 loads perfectly.)

What else can I do to get grub off? I even downloaded someones tool which apparently should fix a boot sector and that didnt help!
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post #2 of 10
Did you install grub to your windows drive? If you did try THIS.

If you plan on installing Mint, the Mint installer can copy over grub if you install to the same location, which would solve your problem. But, if you have 2 drives I would suggest installing grub on the linux drive and changing your boot order to load your linux drive first.
 
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post #3 of 10
If you are going to install them on seperate drives unplug the windows drive before installing Linux.
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post #4 of 10
Thread Starter 
Quote:
Originally Posted by Diffident View Post

Did you install grub to your windows drive? If you did try THIS.

If you plan on installing Mint, the Mint installer can copy over grub if you install to the same location, which would solve your problem. But, if you have 2 drives I would suggest installing grub on the linux drive and changing your boot order to load your linux drive first.

Yeah installed it to my windows drive, which worked fine at first. Dual booting was fine until I decided Ubuntu wasn't for me.

I have tried those steps to bootrec however when I do it from install media and use /scanos it doesn't find a bootable installation and therefore when I use /fixboot and /fixmbr it completes successfully but the same issue occurs. Which is odd because if I exit from grub the Windows install is bootable.

Also my bios sees the Windows Boot Manager but even if I use a boot override it still boots into grub.
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post #5 of 10
Quote:
Originally Posted by Buxty View Post

Yeah installed it to my windows drive, which worked fine at first. Dual booting was fine until I decided Ubuntu wasn't for me.

I have tried those steps to bootrec however when I do it from install media and use /scanos it doesn't find a bootable installation and therefore when I use /fixboot and /fixmbr it completes successfully but the same issue occurs. Which is odd because if I exit from grub the Windows install is bootable.

Also my bios sees the Windows Boot Manager but even if I use a boot override it still boots into grub.

Are you trying this from a windows CD or your installation of windows? And did you follow the /bootrec commands with

Bootsect /nt60 all /MBR

Well I guess I should have asked if your Windows installation is installed via UEFI or MBR. I haven't had any problem fixing the windows MBR, but have never used a windows UEFI install.

Your lucky your machice boots at all since you started deleting your ubuntu partitions prior to eliminating grub first.
 
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post #6 of 10
Thread Starter 
Tried with both, the install USB i'm using completes the commands just fine but even if you get the syntax wrong for Bootsect it still comes up with the same output so i'm not sure if its completing correctly. I read a bit online and saw that it was fine removing Ubuntu before Grub but apparently not.

I think at this point its faster to just format the drive.
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post #7 of 10
I'm a little confused how are you getting into Windows or has everything in Windows you have done was through the install disk? Also since it is Windows 10 i'm sure it is UEFI? One last question if you are just going to install Mint why not just do that now, it will overwrite the old grub? This may be better to ask in the Windows sub form also.

Try running these commands to check if the disk is being detected in Windows.
Code:
diskpart 
list volume
That should give you a table of the partions/disks. To exit it just type "exit".

If that is all good it looks like you would then run this, replaceing "drive-letter" with the letter that Windows is installed to.
Code:
bootsect /nt60 drive-letter: /mbr

Also that is weird if you type the commands and it appears to be nothing, try doing something very obviously wrong and see what happens. Also if you can boot into Windows this may be a good tool to try.
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post #8 of 10
Thread Starter 
Yeah its definitely weird i'm not a Linux guy so i'm unsure whether it was me derping or not. It is UEFI and the OS actually loads after two different GRUB2 screens come up saying no bootable OS was found, which I then have to type "exit" to leave, then 10 boots up like normal.

While in Windows I did try diskpart to see if a Ubuntu (or any other non-Windows) partition shows but none did bar the normal ones. As for bootsect it is odd because if I write a command bootsect with something obviously wrong it still "completes" instantly so its hard to tell if its doing anything.

Cheers for the help but I decided to re-image the drive as I have important stuff cloud and archive based so it was faster to sort it that way. Does OCN have a good guide on how to dual boot across different drives? Or would it be better to VM Windows from inside a purely Linux environment in future? If so would that affect gaming performance majorly?
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post #9 of 10
It will be less trouble and you will get better performance by not running it in a VM. It's pretty easy to set it up to boot with different drives.
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post #10 of 10
Yo Buxty.......................Hilarious Avatar lachen.gif
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