Remove Mac OS X and install Windows?
I'd like to run a new 11.6" MacBook Air exclusively on Windows 7 without wasting any 'space' on the Mac OS. Is there a SIMPLE way to install Win 7 and completely erase Mac OS?
Yes, attach a CDROM drive, boot from MacOS (hold down the C key while the device boots). When The install routine starts, select your language and go to disk utilities at the top of the screen.
Select the partition on the left, and erase it. Restart the computer with Win7 in the Rom drive. Install Win7 remembering to delete the largest partition on the disk (the old HFS+ partition created by OS X), and put a new NTFS one on it.
Complete the install of Win7. Congratulations, downgrade complete. ;)
It is not a good idea to delete the Mac partition, as one needs to boot into OSX every now and then to get firmware updates and stuff. It is better to resize it to the minimum and keep it.
If you do not have a DVD drive, you can use a USB instead, as explained here: