Hello, I have had my Mac for a while now and my files are not backed up. I will be making a purchase on Newegg soon and will be installing Windows 7 Home Premium 64-bit via Boot Camp and plan to use a Western Digital Elements SE 500GB USB 2.0 Portable Hard Drive (most likely, but I am open to suggestions) as an external back up. I will be installing Windows 7 on my Mac for gaming portability on a low-end level (while leaving high-end gaming to an eventual gaming desktop, hopefully) and I want to mainly back up my Mac partition using the Western Digital external hard drive, but wouldn't mind backing up the Windows 7 partition either. 1) First of all, it's fairly simple to format an external hard drive to work with Mac OS X and Time Machine, yes? I have researched the topic a bit and found that with a few simple clicks in Disk Utility, I will have a properly functioning external drive. I just want to confirm its ease (in your opinion) as the prices of those "external mac hard drives" are so much higher than a regular external hard drive that it makes me think that it isn't so simple. Also, 2) When I was formatting my Mac, I chose "1 partition" in order to name it and then install Mac OS X on it. Am I going to run into problems here? I just want to be able to slide my Mac partition to 380 GB down from 500 GB, and devote 120 GB of it to a Windows 7 Partition, put the disc in, and have it begin installing. (hopefully without any problems) I have a 500 GB internal Hard Drive and that is plenty of space for me. I do not need a separate external for media or anything, I simply have everything on my internal and just want it backed up. I will also not let this drive get too full. I plan on having a 380 GB Mac OS X partition and a 120 GB Windows 7 partition, allowing me to have the comfort of not letting either partition get more than 80% full, roughly. 3) Would it be possible to back up both my Mac OS X partition and my Windows 7 partition on the same external hard drive? I have looked this up as well and there are a lot of different answers as to go about this. I want to be able to use Time Machine to back up my full 380 GB Mac partition, but then what would I do with the 120 GB Windows 7 partition? Do you partition an external hard drive? I have never had a need for external back up before so I would appreciate any and all responses. Thank you.