OK, I have Googled quite a bit and I can't find an answer to my particular issue. My setup: 2 GHz Mac Mini, OSX 10.5.6, 3 GB RAM. In addition to the main drive (23 GB remaining of 111 GB), I have two external USB drives. One is my Time Machine Drive (585 GB remaining of 698 GB) and about 2 months ago I added a 1 TB USB drive (831 GB available of 931 GB total). I've had my Mac for about a year and generally love it. I bought the terabyte drive because I want to migrate all the media files (.mp3s mostly) from my PC to a place where both XP and Mac machines can see it. I have the terabyte drive shared, and mapped from XP when the XP machine is on. That all works fine. Most of the time I am not accessing the terabyte drive, so it goes to sleep, which is good because it's kinda noisy, certainly noisier than the Mac. The issue is this: whenever I go to save a file, the Mac feels the need to wake up the terabtye drive before it will give me the "save as" dialog box, and while this happens I'm beachballing. I guess I could understand this, but the Mac is smart enough not to wake up the Time Machine drive. I guess it's waking up the drive because I might write to it. but I hardly ever do. Is there a way to flip a bit somewhere so it doesn't wake the drive unless in the save as dialog box I actually click on the terabyte volume? I realize this may seem like a minor quibble, but it's driving me crazy, to the point where I may end up just disconnecting the drive unless I plan to use it. That seems like overkill. Thanks in advance for your advice.