Why is there a "System File Reserved" partition created after a clean install?

Arveleg

Honorable
Feb 1, 2013
13
0
10,510
Hi, having just done a clean install for the first time on my year old gaming PC, I just happened to notice a "System File Reserved (E)" partition created.
I was puzzled as to what this is and why it was created, seeing as how It never existed (or was hidden) prior to doing the clean install. :??:

So my question is, was it originally on main (C) drive prior to the clean install or was it hidden somewhere else (No drive letter), also how can I return my drives
to normal? By getting rid of or hiding it? Thank you! :)

p.s. sorry if this sounded confusing