In some cases, this function can realize the conversion between primary partition and logical partition. Due to the limitation of MBR partition table that there are at most four primary partitions (include one extended partition, if any) on one disk. Thus the conversion of partition type between primary and logical has some limitations:
Primary to Logical
Logical to Primary.
This function doesn't apply to GPT disk (GUID partition table).
To do such conversion, first select a partition to be converted. Then click "Partition" on the main menu; select the item "Convert to Logical" or "Convert to Primary"; then PartitionGuru will finish the conversion instantly.
To avoid faulty operations, after the conversion PartitionGuru won't save the just converted partition table to disk immediately and it is only kept in the memory until you carry out the command of "Save Partition Table".