How to delete Windows 7, 8 after upgrading to Windows 10

Now that you've upgraded to Windows 10 and are ready to embrace Microsoft's computing future, you can free up valuable space on your drive for new files. To do this, you can clean up your disk using the Disk Cleanup utility on Windows to remove old files, temporary internet files and empty out that overflying Recycle Bin. One of the biggest files that you can remove is your previous Windows installation.Bear in mind that doing this means that you'll forever say "I do" to Cortana, for better or f