I use a program called Wipe Disk to write zeros to my hard drive and then do a quick format when installing the Operating system. Takes me about two hours to do this plus installing all the programs and security on that hard drive.After I get everything back to like I like it I then go and start the long process of installing FSX. It takes me almost two days to reinstall all the planes and all the scenery. Then all the tweaking and adjustments of everything. Out of all the addons... FEX for me has always been a pain in the hinnie for me. Anyway what part of a format takes you guys the longest. I know most of you guys are faster at this than me cus I a old fart...Mike