There are four parts on my hard drive, the system reserved partition, system partition, and two unallocated space. ' I have a 3 TB hard drive, and I installed it on my Windows 10 computer. Can't create a new partition with unallocated space on a 3TB hard drive Here are two typical New Simple volume not working cases: Case 1. You are faced with a New Simple Volume greyed out error. There are times that you cannot select the 'New Simple Volume' option in Disk Management when you try to create a new partition. New Simple Volume Greyed Out on Hard Drive and USB Drive
