In the Disk Management window, right-click or tap and hold on the partition that you want to be removed (the one with the operating system that you uninstall), and select “Delete Volume” to erase it.

Then, you can add the available space to other partitions.

How do I completely delete something on Windows?

If you want to delete multiple files at once, hold “Ctrl” and click each file. To select everything in the folder, press “Ctrl-A.” Hold “Shift” and press “Delete” to delete the file permanently without moving it to the Recycle Bin. Click “Yes” to confirm when Windows asks you if you want to permanently delete the file.

How do I completely remove Windows 10?

How to uninstall Windows 10 using the full backup option

• Right-click the Start menu and select Control Panel.
• Click System and Security.
• Click Backup and Restore (Windows 7).
• On the left pane, click Create a system repair disc.
• Follow the on-screen instructions to create the repair disc.