Partitioning laptop with 4 primary partitions

I have HP laptop with 4 primary partitions. The second one is windows partition and other 3 are recovery, system and blah blah(i.e. unusable) So, basically my explorer shows only one partition where i can put my data and the same partition has my windows installation. Now, if I wanted to create more partitions for the sake of data storage, how do I it?

So far, I have read that converting my disk to Dynamic is the only option. What does it mean and what will it affect? Can I convert my disk back to normal from dynamic without losing data?

• backup your hard disk
• check the backups can be read
• resize partitions to make space
• convert one primary partition to an extended partition
• create two or more logical partitions in the extended partition
• restore data to the converted partition.

See this tutorial

RGB already gave you an answer if all you need is more partitions. Dynamic disks are different and allow more sophisticated usage of disks such as spanning, which is combining instead of partitioning disks. You can look it up on Microsoft technet for more details but I don't think you need that from your question.