If you are as stupid as me and manage to make a partition active that you shouldn’t have done, so long as you haven’t restarted the machine, there is a quick easy fix to put it right.
On the machine, do the following:
- Go into a Command Prompt
- Type “diskpart”
- Type “list volume”
- Type “select volume #” (# = the volume number that you wish to amend)
- Type “inactive”
This will then make the partition inactive and everything can return to normal!