so, what stops you from adding another? Whatever mobo they used, it's probably got the usual two IDE channels with 2 devices (master/slave) available for each. If your IDE 1 cable only has 1 connection, get a new cable. If this isn't the prob, you could always swap the CD for the new HD long enough to make the transfer. (Note: If someone has encountered a situation where e-machines uses a mobo that doesn't allow more than 1 HD (somehow) please correct me, but it would be a rarity, indeed) Back to BuffaloG.. does your manual say it'll only support 1 device per channel or only has one IDE channel? Is there a model # I can look up to verify stuff?