Hello everyone, So I have been a longtime PC user but my current HP is beginning to give me problems so I have made the decision to switch to Mac. I'm going to be buying an external hard drive (link on the bottom). Before my laptop completely dies, I want to transfer my data to the external drive, however, I've come to the understanding that these hard drives must be formatted to be compatible with Mac OS. So my question is, if I transfer the data to the drive from my current PC and then go to format the drive for my future MacBook, will that cause the data to be deleted? http://www.amazon.com/Passport-Ultr...400459861&sr=8-1&keywords=external+hard+drive Thanks!