Yeah we can always number of partitions even after installing windows .If you bought a computer and got only one or two partitions , which is generally the case as two of my friends bought laptop and the shopkeeper simply refused by saying that windows 8 doesn't support more than two partitions and by the way I already had 5 partitions on my laptop running windows 8 . I will show you how to do that.
for windows 7
- Click on the start button and then choose Control Panel Click on the System and Security link.
- In the System and Security window, click on the Administrative Tools heading located near the bottom of the window.
- In the Administrative Tools window, double-click on the Computer Management icon
FOR WINDOWS 8