I recently upgraded from a 40 gig hard drive to a 160 (both Western Digital). When I boot up using the 40 as the master, I can copy old files to the 160 by dragging and dropping with no problem. But when the 160 is the master and the 40 is the slave, the slave never shows up in Windows Explorer, My Computer, etc. Both have the jumpers set to Cable Select. Can anyone tell me why I can't see the slave when using the 160, and how to fix the problem? I'd really appreciate it, it's very annoying to have to keep disconnecting & re-connecting the drives.