

The delete method requires to shut down the computer and insert the installation media, is useful when the disk would be reinstalled to a new system. The Delete and Format options are grayed out right now, that’s because the disk is now unallocated space, which the status the disk should be after deleting, so if the disk is showing as “Disk 0” and both the format, delete options are active, you can use this method to remove previous installed Windows 10Īlternatively, you can use the diskpart command prompt method to remove C Drive, just press Shift+F10 to bring diskpart up and type Shift+F10 to bring up the command prompt

In the screenshot above you can see there are many options available: Windows 10 installation media is not only capable of installing the system, but also came with the format and delete operations, which are good enough to ensure data empty, but not clean, formatted / deleted drive still have residue for data recovery programs, but if all we want is to remove Windows and reinstall another operating system, it’s Fine. We can’t remove Windows with Windows, neither in the Disk Management tool nor the diskpart command prompt tool, neither the delete operation nor the format command, but we can remove the system when it’s not running (actually, we can remove it even when it’s running, will talk about that later) Remove Windows with the installation media This option is easy to find if you just upgraded Windows: press the Start button and click the Gear icon and click Update and Security and click the Recovery option and then click the Go back to Windows 7 option to remove Windows 10 Tip: The Go back to Windows 7 option is a temporary setting only available for a month after upgrading to Windows 10, after when we’ll have to seek another solution.
