Clear the Windows.Old file on C:

This post will be a nice easy post for a change.  If you’re like me and you’re using an SSD which may not be too large, you might find that there’s a significant chunk of data being used up by the Windows.Old file.  This contains rollback data from your previous installation before upgrading to Windows 10.  If you’re not planning on rolling back, then I suggest you clear it up and get rid of that wasted data usage.

To do this, you will need to do the following:

1. Run Disk-Clean Up utility from the Start Menu
2. Click Clean up system files