Does anybody have a suggestion to help me here? Perhaps a way to keep a second cache on the external drive that can be read/updated when the second drive is plugged in? I imagine my situation is not uncommon — does anybody else have strategies for dealing with this problem?
Short answer is no, and I can’t think of something that might help (other than running two copies, one with a database for the external drive, and another with the “rest” of the files.)
But that really isn’t a bad idea at all… marking a drive as “removable”, and not purging those files from the database when the drive is offline.
Might be neat to be able to plug in an iPod or something and have it start sharing automagically.