Why do I have multiple drives in my backup system image?
- by bebop
I have a drive which has 2 partitions.  One is where the OS is installed, the other is a data (but not libraries) drive.  When I try and create a backup using the built in tool, it wants to include both partitions in the system image.  Why does it do this?  If I move the os to a separate drive will I be able to back up just this data? 
Edit:  To be more clear.
I have 4 disks in the machine.  1 disc has 2 partitions.  These are c: and e:, the other disks  are d: f: and h:.  The OS is installed on c: and libraries are stored on h:.  The libraries are already backed up using crashplan, but I want to create a system image so I can easily restore the machine, if it either dies or if I get a SSD drive. When I choose backup (either through the wizard or if I open it through control panel) and check (or click) create a system image it automatically adds both c: and e: to the list of drives that will be backed up, and I cannot change this, the checkboxes to unselect are greyed out.
I would like to know why it automatically adds e: to the list (but not h:, where the libraries are) and if I can change some setting so whatever files it has on e: that it thinks need to be backed up as part of the system image are moved to c:. How can I determine what they are?  Is it because c: and e: are partitions of the same disk?  If I move c: tro a different disk will that mean I only have to back up c:?
Thanks
Edit 2:  I have viewed all files including hidden and system ones on both drives and it seems that I have a suspicous hidden e:\boot\ folder.  I think that I might have installed the OS as a VHD at first then installed a seperate version straight on the disk, having dual boot for a while, then used EasyBCD to remove the VHD boot and file.  Might this be what is causing my issue?  How might I go about removing this?  is it safe to just delete the boot folder?