
If your hard drive is larger than 2TB and it is in MBR disk type, you can’t turn second unallocated partition into a simple volume. The main factor is the limitation of MBR disk. Why Unable to Create New Partition in Windows 10 In addition, there is another situation that you also are not allowed to create a new partition when reaching the maximum number of partitions. When right clicking on the second unallocated space, new simple volume greyed out.

Here let’s take a 3TB hard drive in Windows 10 as an example.įrom the above screenshot, you can see there are two unallocated space. Here I will tell you detailed information about this issue. The above example comes from a forum online and it gives you a real case saying Windows cannot create new partition from unallocated space in Windows 10.

The 1852GB space I can create a partition on, but the 1678GB space I cannot do anything with: Cannot create a partition, and cannot combine it with the rest of the unallocated space.” It auto partitioned my drive into a 500MB system reserved partition, my C: drive, and two unallocated spaces of 1852.69GB and 1678.02GB respectively. During Windows 10 installation, I created a 200gb partition to install to as the C: drive.
