DiskPart cannot create the partition because the size specified is less than the size of the entire disk. DiskPart only supports ...

DiskPart cannot create the partition because the size specified is less than
the size of the entire disk.
DiskPart only supports the creation of partitions that cover an entire
removable disk.
Try the command again without specifying a size and DiskPart will automatically
size the partition to cover the entire disk.