Theoretically, its true that we we can have 63 partitions in an IDE HDD (16 partitions for one primary partition). We can have only one extended partition and can accommodate 16 logical partitions in that. I know that we can have only 4 primary partitions and one among them can be an extended partition for an IDE.
I think, practically its not true it seems. Can any one explain me how to create another set of 16 partitions in an Hard Disk (IDE).