Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fast but unreliable

I like the capacity and the write speed. It worked fine on a Mac G4 desktop but failedrepeatedly on a MacBook Pro running Mac OS 10.4.9 during an overseas trip.The worst error diagnostic was "cannot unmount drive" - which meant devicehad to be initialized & reformatted, losing all data. This typically happenedupon trying to save updated files; apparently rewrite destroys theinternal file structure. All in all, a $100 waste.