You will need
  • Software Partition Manager Special Edition.
To start creating the boot disk partition, you need to install and run the program. The program installation does not differ from a standard installation of any program. In the Windows setup wizard, press the keys Next to the last window, click Finish. On the desktop displays a shortcut – double-click to run it.
In the main program window you need to make a choice in favor of the Mode "for experienced users". After clicking this button, you will transfer to the window of the program, which started in "expert Mode".
In the opened window, locate the item "Dashboard disk" on the "List topics". Click the right mouse button on the section that you would like to make active. In the opened context menu select "mark partition as active".
After that, press "Yes" to confirm your action.
In the main menu, select "Change" - then click "Apply changes".
In the new window asking for confirmation, click "Yes."
Then start the process of converting your chosen partition to boot. After the conversion process comes to an end, you will see a window with the "Close" button. Click this button to close the window process.