I installed the Calibre plugin and accidentally set "/" (the root folder) as the calibre data directory. This had the effect of changing the permissions of all my files and directories on the disk to owner "calibre" and group "users".
I'm prepared to back up all the data, wipe the drive and reconfigure it from scratch, but I noticed in Access Rights Management > Shared Folders there is a "Reset Permissions" tab. How does this work? Will it automagically fix my disk or will I have to nuke it as planned?