I am running xp home on a dell P4. My primary drive was filling up so I bought a 80G Westen digital as a storage drive. It showed up on device manager and I put a volume on it and transferred data, so far so good. Now my primary drive (I think) is starting to make a slightly different noise, so I decide to unplug the secondary to see if thats what it is. Powered down, umplug power cord, leave other data cord in place. Same sound. Power down, plug back in, now disk isnt recognized. Power down, recheck connection, same result. What did I do/not do?