Installing Windows 7 - Remove 100MB system partition which is created by default

To remove this pain partition do these steps:

1. Run the windows 7 cd and at the first setup screen press Shift +F10
2. Run Diskpart
3. Type the follow commands in:
   List disk (normally disk is 0)
   select disk 0 (change 0 to another number if applicable)
   clean (deletes all partitions on disk)
   create partition primary
   select partition 1
   active
   format fs=ntfs quick
   exit
4. Now you can continue with the setup it will use the partition we just created and wont create a system partition

These steps are useful when you need to clone machines and you want only one disk