How to ramove an OS, When your computer run on dual mode OS and you want to delete someone?

1. Start OR Select  a system, which you want to keep or save.

2. Select the Drive, In which you have installed 2nd O.S.

3. Right click to same drive, and Select DELETE or FORMAT.

4. Now, Right click to MY COMPUTER > PROPERTIES > ADVANCE > START UP AND RECOVERY > EDIT > DELETE or REMOVE  a line from the NOTEPAD WINDOW, which you want to remove.


5. Restart your computer