I bought an HP Computer that some time ago with Windows 7 Operating System and it has two additional partitions on the main hard drive One is 12.7 gb and the other 500 some MB. The original Operating system was Windows 7 Home Premium and today I used Windows Upgrade Anytime to convert from Home Premium to Windows 7 Professional. Is there any need to keep those two partitions any longer since I am assuming they had the purpose of restoring the computer to its original state. I have Win 7 Professional System backup on another hard drive and also downloaded the Windows Professional Microsoft ISO which I loaded to a DVD. Comments? Cy