I want to remove OSX completely from my 2010 Macbook Air and just have Windows 7 installed. Are there fundamental reasons why I shouldnt' do this? I bought the 11" MBA, a beautiful machine. I went with 64gb and 4 gigs ram, I'm regretting that now. The HD's been filled up to the brink for a few months now. I installed Windows 7 ultimate 64bit on a 20gb partition, 10GB for the install, 4GB for the hibernation file, I need 4GB of space free to fully use the RAM (that's still true, right?), so that's it, I have like 2 GB for storage and additional application install, dropbox alone fills that up... On the OSX side, my daily use OS, the 40GB keeps filling up just with Itunes and browsing . There's a truckload of software i've been meaning to install on the MBA to finally start using it as a work tool, but i've been unable to do so. Partly because the common things, Photoshop etc, I need to install on both OS's I need Windows because of some key apps I need that don't have OSX counterparts. Engineering stuff, There are no such key applications that I need in OSX. I like osx, but what I like more, is getting some work done.. So baslicly I made up my mind but i'm afraid i'll get into trouble deleting OSX. Do you need it for firmware updates? Does it void the warranty if you remove it? Does the boot process somehow needs a copy of OSX present? OR are there other issues I don't know about? How best to proceed in deleting the OSX partition? tnx for any tips guys. i'm NOT looking for a windows vs osX battle, i'm not looking to buy expensive 3rd party HD's, and i'm not willing to exert more self controll in filling up my space.