Several years ago, there was a menu item, directly in Plex Web where you could do this.
Still, using this would make the same change in the Windows Registry which is being described in here: [HowTo] An extended guide on how to move the Plex data folder on Windows
If you take a look at your Registry, I assume you will find the key LocalAppDataPath being present, and pointing to a folder on your drive G:
The most straightforward method would be to:
- stop plex server using the task tray icon ← very important!
- copy the whole folder that appears in
LocalAppDataPathfrom drive G: to drive F:
Do this however you like, but the safest method would be to use robocopy.exe on the command line. Utilizing the switch/MIR. The advantage of this method over the regular copy via the file explorer is that you can resume it, should you need to abort it. Because it will take quite a long time (could be hours, actually). - edit the registry to point at drive F: instead
- start Plex server