not in a caddy.connected via usb lead
The drive you've mentioned is Sata and doesn't have usb.
Are you using something like this?
http://uk.crucial.com/ProductDisplay?urlRequestType=Base&catalogId=10153&categoryId=&productId=207029&errorViewName=ProductDisplayErrorView&urlLangId=-1&langId=-1&top_category=&parent_category_rn=&storeId=10153
Post a screenshot of Disk Mangement with it selected.