I bought my passport essential 0730 (500 gb. ) yesterday. I use both macbook (snow leopard ) and sony vaio (win 7). so I just need a storage which i could both in mac and on win 7. I had no problem with launching it on macbook. I used disc utility to format my passport and then i could get access to it and transfer my data (nearly 40 gb) . But today, when i pluged it into sony vaio (win 7), only thing that i could get was the icon, which appeared on the toolbar. I could see my passport in the “devices and printers” folder, and also in the “disc managemet” but it wouldnt come up in “my computer” folder. so i cant get access to it, nor can i see my data inside of it. I downloaded the software update. I checked if it’s hidden driver or something, but no, it wasn’t. When İ open “disc management”, i can see it on the right side, under the main disc, ( it says: disc 1, basic, 465,73 gb healty( active, primary partition) but when I right click on it, the only option that i could choose is “delete”, (other options are grey, so i can not click). I have no computer skills so i cant figure it out by myself. Could anyone help me?