I'm going to be getting a new mobo with UEFI, and am interested in using GPT over MBR because I heard boot times on GPT are slightly faster(if that's even true), but I have a few questions...
The most important one is, will I lose any data on secondary drives (I will be formatting my main drive, an SSD, when reinstalling windows 7 anyway) if they need to be formatted to support GPT? Or can I just keep them as-is and Windows will find the drives just fine and I only need to set the main drive to GPT?
And do I need a certain type of HDD/SSD that supports GPT? Or do all drives work with it?
I've tried researching myself but I can't find any answers to these two questions.
GPT can be used on any size (or type) of drive (including a USB FLASH drive, if you want to). Any boot speed increase will be more to do with UEFI than GPT, UEFI boots using all processors/cores, MBR (initially) boots with only one processor/core. To the best of my knowledge you can't (currently) convert from MBR to GPT without losing data, this may change when more GPT tools become available.