Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This doesn't work!

I bought this item under the impression that it worked for macs. It doesn't. At this point in time, the disc that came with it is stuck in my optical drive. If you have a mac, do not buy this item! Also, does anyone know if I could get the disc out of my optical drive? it is a 2.5mm disc. Any advice?