Cannot create new partitions

Sometimes, you may encounter the error "cannot create new partitions" even if you have some unallocated space on your hard disk. According to our experience, this error always cased by the limitation of MBR based on hard disk. For a basic MBR hard disk, there can be 4 primary partitions at most, or 3 primary partitions and 1 extended partitions (extended partition must be divided into logical partitions for using it). If your hard disk has reached the limitation, you will get the error when trying to create a new partition.

To get rid of the trouble, you can convert one of the primary partitions to logical. In this case, we convert D drive to logical.

4 Primary partitions

Then you can create new logical partitions to utilize the unallocated space.