To create an unallocated space, delete any drive that you don’t need anymore.Since my friend want to merge D drive with C, therefore I am going to delete the D drive and create some unallocated space. When you right-click on Windows partition(in my case it is drive C), you will find that Extend Volume options is grayed out(not highlighted), the reason for this is that there is no unallocated space yet. In my case it looks like the screenshot below. Right-click Computer, select Manage, and finally click on Disk Management on the let sidebar. I will solve this problem using Windows build-in Disk Management tool. If you are beginner or a pro, it doesn’t matter, today I will clear all misconceptions and solve this problem once and for all. I now want to extend my C drive, and the “Extend Volume” feature is grayed out too. I have Windows Vista installed in C drive, my D drive is almost free and I don’t use it much.
My friend recently asked me the following question, Do you have Windows 7 or Visa installed on C Drive(or any other drive) and are looking for a way to extend it? After reading different blogs and forums I have found that most people are looking for it’s solution.
