I did just that, and formatted it but after around 5-6 hours it was still formatting so i cancelled it. Then goto disk management to format my external. Anyways, he told me to right click on my computer and click on manage. The technician said that it was because of the PS3 that it doesnt show in my computer, but i was thinking it worked fine before. I tried to research on the problem and called the company for some support. It still mad the noise when I disconnected and reconnected and had the safely remove device icon in the right tray. But after i pressed cancel, my external was no longer shown in my computer. I pressed cancel thinking that I would need to remove some files to make room. When i was trying to adding more data onto it one day, a message came up saying that the disk was full. I was using it mainly to store and backup my data and regularly connected it to my PS3 to watch movies. I have a Simpletech 500gb external hard drive and it was working fine for a while. Simpletech 500gb Ext HDD cannot be seen in my computer