I've got Windows 7 Home Premium 64bit, and I was wanting to install another OS, for various reasons. After reading about it online I found out that I should install it on another partition however no more that 4 can be created on a basic disk, but OS's can be installed on a dynamic disk. I've tried installing it on external devices, USB sticks, external HDD's, etc. but none worked. So I've come to the conclusion that I can either delete one of the existing partitions or forget about it. The attached image shows how the partions are layed out, along with names. I know some of them can be deleted, such as the C drive and Recovery, but HP tools and the other one, can they? I would appreciated any help. Thanks.