UPDATE (ANOTHER ISSUE....UGH!)
So adding the --delete command, I now seem to having rsync running as desired to the external drive.
I thought at this point everything was ok, but when I opened Roon, Roon is now reporting I have double the number of albums and tracks I had before!
Apparently, the other day when I was trying to get rsync to backup to the external drive instead of the internal drive, it created a new folder called "Media" under the "Music" folder (SPLAYER > Music is the Roon Watched folder) on the internal drive:
Roon seems to be reading this new "Media" folder as another set of albums and tracks, hence why it's reporting double the number of albums and tracks I actually have. Note the file path on each album it's showing here:
The top one is the correct path (splayer > music > Jim > ABBA > Arrival). The bottom one is the new/extra one that somehow got created when I was trying to fix the backup issue (splayer > music > media > Seagate Backup Plus > music > Jim > ABBA > Arrival).
I tried to delete the new/extra "Media" folder, but I get this message (I get the same message if I try to view the contents);
"Windows cannot access \\SPLAYER\Music\Media. You do not have permission to access \\SPLAYER\Music\Media. Contact Network Administrator to request access."
Interestingly, when I hover the curser over that Media folder, a little box comes up that says the file is empty, but obviously Roon is reading this file as having music files in it.
Btw, this extra "Media" folder also got backed up to the external drive when I ran rsync today:
I also cannot delete the extra Music folder (splayer > media > music) created here on the internal drive, again, when I was trying to get rsync to backup to the external drive;
How do I get rid of these extra folders? I know I can change the Roon watched folders to ignore the extra Media folder, but I'd rather get rid of these unneeded folders if possible to avoid any possible confusion in the future (and I'm plenty confused right now!).