This is a 1TB HD with Win 7 pre-installed on a 100GB partition (C and a remaining 809GB or 811GB depending on what I use to look at it on a second partition (D. I would like to partition the remaining 811GB (D however I ran into a confusing snag. Even though Windows shows only 2 partitions,when I run my partition manager it shows that there are 4 partitions!!! 100MiB NTFS, 101GiB NTFS, (extended) 809.65GiB,sda5 809.65GiB NTFS. I am VERY confused and I have attached a photo in the hopes someone can help me. I am not sure which partition(s) I should be dealing? I only want to use the D: partition which shouldn't have any Win7 related files, system or otherwise, on it. I have attached a photo if it helps to make what I am saying clearer. https://www.evernote.com/shard/s54/sh/fb3da1ac-df0e-4329-b37a-c1707e48cfeb/321f562378aee26d7fb955b169e55dcb Thank You for your assistance.