New
#1
system files to delete
There are 3 boxes that refer to Win 10 installation and when you try to delete them it says you will not be able to go back to your previous OS.
It is substantial space as I believe one box contains something like x amount of GB's.
I have imaged Win 10 so I think could delete them but isn't it more likely I should keep them in case I need to go back and an image failed? Is it subjective or is there a rule of thumb regarding this issue?