Could be fsck or could be searching the whole drive for media files to index it every time it's inserted or the system rebooted. I guess a reasonable test of wh

Could be fsck or could be searching the whole drive for media files to index it every time it's inserted or the system rebooted. I guess a reasonable test of which without better access to the thing would be to have two drives of the same size with one mostly full and one mostly empty. I drive a 2016 CX-5 with the stock in-dash software. If I'm bored enough at some point I might test the hypothesis on that.