Windows 7 Ultimate 32-bit edition takes 8.3Gb following a clean install without any additional applications or data.
I recommend going for a minimum partition size of 15Gb plus whatever you think you’ll need for applications and data.
Windows 7 is very good at making it easy for you to expand or contract the partition sizes post install – there’s no need to re-install or mess about with third party utilities 🙂
To resize a partition simply do the following:
- type “Computer Management” at what used to be the “Start” menu
- select “Disk management”
- select the partition you’d like to resize
- Click the right mouse button to reveal the menu and pick the appropriate option – “extend” or “shrink”.
Note: the image below has “extend volume” greyed out simply because the area after this partition is fully occupied by another partition.