You see, one of the reasons why the extend volume option is greyed out is because there is no free or unallocated space after the C drive partition. Method 1: By Freeing Up Space Next to C Drive You can enable the option by getting unallocated space next to C drive. There are mainly 2 methods to fix the issue depending on the partition next to C drive, available space and unallocated memory. This article will guide you to re-enable Extend Volume option for the C drive or any other disk partitions.Īfter that, you can easily extend the C drive and add install new software without any hassle. If you are facing this error, you need not worry. That is when I noticed the option to “Extend Volume” is disabled in Windows 10. I created two partitions and then later I was required to extend C Drive. This is a problem that I myself faced when I installed an SSD on my laptop. Well, most of the time it is quite simple but sometimes you get extend volume option greyed out issue in Windows 10. Is your C drive full? And now you wish to extend the C drive without formatting the storage drive and installing new Windows.

Windows store install button greyed out