The NanWick Bar

NanWick Windows Uninstaller - A tool to uninstall Windows from your computer

Windows 8 is being popular day by day. Some of the users are upgrading their Windows 7 into 8. Some other makes a custom installation. When we make a new installation(custom installation) the previous operating system will remain unchanged and an extra entry will be added to the boot menu. Sometimes we have to remove the previous operating system after the installation of new one.
 Today we are introducing a new tool names NanWick Windows Uninstaller. Which will help you to remove following Windows installations :

  •  Windows Vista
  •  Windows 7
  •  Windows 8

You have to follow some simple steps to uninstall Windows in this tool, Which are mentioned in  this tool itself.

 You can download this tool using following link :

In Action :

What happens  behind

Users who are interested to know what happens behind this tool and to remove your Windows manually follow the given steps :

1. Download following registry script, double click and merge it into the registry. Which will add a new option named Take Ownership into your context menu.

 2. Open the drive in which you are installing your Windows(say C). Right click Windows folder and select Take Ownership.

3. Do the same for following files and folders also :

   (1) Program Files
   (2) Users
   (3) ProgramData
   (4) $Recycle.bin
   (5) Recovery
   (6) Config.Msi
   (7) Documents and settings
   (8) hiberfil.sys
   (9) pagefile.sys
   (10) config.sys

(Note : Some of the files mentioned may be hidden, You can make it visible by Press Alt key, go to Tools->Folder Options, Under View tab select Show hidden files,folders and drives).

4. Delete the files and folders which you have taken ownerships.

5. Open start menu, type cmd and press Ctrl+Shift+Enter.( Those who are using Windows 8 go to C:\Windows\System32 , right click on cmd.exe and select Run as Administrator).

6. Type BCDEDIT in cmd window and press Enter. Which will list boot menu entries. Search for your Windows on it and copy the code placed after the identifier.

7. In the same Windows type becdedit /delete {paste the code which you copied in the above step} and press Enter. (For example : bcdedit /delete {1f2f9f42-1fd9-11e2-98d2-b9405748522b}), Which will remove OS entry from the Boot menu.


  1. Thanks ......This what I always looking for

  2. Does it remove WIN XP?

  3. what if you have files like music or documents in the partiton you want to delete? does that disapear too?

    1. Of course it is. If you want to backup those files goto "C:\Users\{username}\" before starting this tool and copy the files which you want. (Note : the drive in which you installed Windows is assumed as Local disc C and replace {username} with your username)

  4. Does it format or 'erase all content' in the OS drive or just the relevant OS files? I mean, I also have some more files apart from the local documents etc. and the problem is, I can't move them elsewhere.

    1. It will delete OS files only, the other files in the drive will remain untouched.

  5. It works on Windows 7 64-bit (PT-BR), but does not work in Windows 8 Pro PT-BR. On Windows 8, when you click "Scan", it freezes, unresponsive and does not display the drives for choice.

    1. Thanks for reporting. Please follow manual methods given in the article to uninstall specified operating system.

  6. I think windows 8 is total rubbish. Why do they always install the latest windows on new laptops? I would prefer a laptop with windows 7.

    Nice piece of software!

  7. Great tool. I was looking for it. Thanks!

  8. It is hard to find it but finally I got it! Great work!

  9. It is nice window i love to use it. It is awesome to work on it.telekupon

  10. Don't know if you are still following this, but will bookmark and check back. Once I remove the OS, how do I recover the space I made for the DB? Can I just use a partitioning program? Thanks


    1. This program will not make any changes to your disk partitions. It simply removes the files and entries created by Windows installation in your PC. Read "What happens behind" section given above for more information.

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