Best way to "un-partition" a HDD

[pro2a]

I have two physical internal HDD's. One is partitioned, I want to "un-partitioned" it. I'm not sure how to do that. It's my SATA2 drive and not the one with the OS installed on it. It's mostly just free space. I do have GParted, is there a way to do it using that?

Thanks.

 

[ZRMaster]

Try Acronis Disk Director .... u can find it on Hirens Boot.
I use it , and it works with linux partitions too...
Here is a screenshoot of it :

Hope this helps

 

[KSoD]

GParted will do this just fine for you. Since you already have it there is no reason to go out and try to find Hirens.

http://www.techist.com/forums/f127/gparted-usage-tutorial-224994/

Everything is explained.