Delete and merge unallocated Ubuntu partition in Windows

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Users who have deleted the Ubuntu or Linux partition from Windows have faced a problem with extending their hard drive to merge that unallocated or free space which was previously occupied by Ubuntu or other Linux operating system. In most cases the option to “extend” a primary hard drive is greyed out. Fortunately, after a lot of searching, I have found a sure fix for this issue.




Since you are about to delete the Ubuntu or Linux partition, I am assuming you are trying to completely remove Ubuntu or Linux and just want to boot from the Windows 7,8 OR 10 operating system. To do this in a safe manner, follow the below steps:

How to remove GRUB Ubuntu/Windows dual boot

Before deleting the Ubuntu or any Linux partition you need to make sure your boot loader is repaired via Windows.Here are the steps for it:

  • For this you will need to boot into Windows setup via DVD or a bootable USB. You can easily create bootable USB using a program called Rufus.
  • Insert the bootable DVD or bootable USB. Press F10 or F12 to boot from USB/DVD.
  • After booting into Windows setup via DVD or USB,, select the language
  • Click on “repair your system”.
  • Now find and open command prompt and type bootrec /fixboot >> Press Enter
  • Again type bootrec /fixmbr then hit enter.
You’ve successfully remove the Ubuntu-linux/ Windows GRUB boot loader and you will boot directly into Windows 7. Now, to safely delete the partition occupied by Ubuntu follow these steps :

Delete Ubuntu/Linux partition in Windows and merge it with primary drive


  1. First Download & install  MiniTool Partition Wizard Free Edition
  2. Open the MiniTool Partition Wizard
  3. Then right click on the unallocated or ubuntu partition and select wipe partition/delete >>  Click on “Apply” (top left )
  4. Close Minitool Partition Winzard
  5. Now press windows key + R and type diskmgmt.msc >> press enter
  6. Alternately, press windows key and search for disk management and select “create and format hard disk partitions”
  7. Now the disk management utility will open
  8. Right click on the unallocated or free partition >> Select “Delete Partition”
  9. Now right click on the disk drive you want to expand and select “extend” and then choose the unallocated space. Now the unallocated or free space will be merged to that drive. In the third image below, C: is the drive I extended after deleting  the unallocated/free Ubuntu partition. 
Deleting Ubuntu partition with MiniTool Partition Wizard 

Running Disk Management Utility in Windows


Deleting Ubuntu Partition to merge it with Drive C:
If you've followed the above steps correctly, all of the free space previously taken by Ubuntu or Linux will be  allocated to your primary Windows drive.


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