Disk Management is an inbuilt tool in Windows OS that can be utilized to maintain the partitions on the hard disk. It offers features to create, extend or even delete the volumes. But recently several users have reported that the extend volume option is greyed out in the Disk Management tool and they can’t extend their volume. Thus, if you are also going through the same issue, don’t panic. Here I’ve covered 5 quick fixes to solve the extend volume greyed out on Widows 11/10/8 PC.