There’s a new version of Google’s Picasa photo management software, version 2, and I’m most excited about this feature:
External drives – Find photos on external drives using Picasa. Simply go Tools > Folder Manager to choose whether Picasa should scan a connected external drive to find pictures. When you unplug and reconnect, Picasa will find your pictures instantly (with no scanning), and will also preserve your labels
I’ve been needing this for a while since I’m constantly having to move files off my hard drive onto external storage.