I am using MacBook Air 13". I need to install Windows 7 on my MB to run some software. I have about 30GB free space on my MB. Is there any Windows 7 distribution that uses less space and works with Bootcamp?
Straight from Microsoft editions of Windows are all the same size, the feature sets are unlocked by what edition you've paid for.
- home and business
All of them take up the same amount of space, but some have limited access to features.
I would install the windows partition to an external drive. You might be able to squeak by with 30GB if you have less than 4GB of windows files.