posted this in the wrong section. if a mod can move it then many thanks. sorry hey everybody. im new here and do not yet have a mac but ill be getting one within the next year. either late 2011 or the 2012 whenever itll be released. anyway so im looking to get an external hard drive. i found the seagate freeagent go which i like. 320gb should be fine. my question is, if i back everything up on it with it set to windows, will i have to delete everything to format it for os x? or will it be fine? Edit: i realized both hard drives use usb 2.0 so after looking on the seagate website i think this will be a much better choice but id like opinions on how well it works with a MBP as thats what ill buy. http://www.seagate.com/www/en-us/products/external/external-hard-drive/portable-hard-drive the options are blue, usb 3.0, 500 gb and 14.5mm. or would this drive be better? http://www.seagate.com/www/en-us/products/external/external-hard-drive/slim-hard-drive/ opinions? suggestions?