I have two OS, first Windows 7 ultimate and second is Windows 7 professional.
Previously I only have Windows 7 ultimate, then I installed Windows 7 professional, to compare between both Windows.
Windows 7 professional it doesn't have some of the features on Windows 7 ultimate.
How I can remove the Windows 7 professional from my PC.?
Why are you asking about deleting the boot manager when you just want to delete one of your Windows 7 installations? Deleting the boot manager will leave you unable to access either of your Win7's. Open Disk Management while booted into Win 7 Ultimate, find the partition (Windows "drive") that contains your Win 7 Pro, right click on it, and choose "format".
