Seagate expansion external 1 TB hard disk gave me horrible experience. I relied on it so much and transferred all my important and confidential data into it so that it can remain safe but it got corrupted. As it was in warranty period so I visited the store to fix the problem, but after little bit of trying they also denied saying that the only option is to format it. Worst nightmare ever I had on that. They said it is 1 TB but guys you can only use 700-800 GB space of the disk. The connecting USB wire is also of very poor quality. It got damaged and stop functioning if you keep it in your bag a bit twistedly. The design is bad. Never prefer the hard disk whose upper head can be opened, it will trouble you later on. Poor customer care support. Very unreliable product.