I have a Windows Server 2008 R2 and the C: drive is running out of space, however my D drive is HUGE. I think the easiest way to fix this is to use a disk partition tool. I see one from minitool, Gpart, Paragon, Partition Manager, etc. I have no experience with ANY of these. I am looking for a recommendation from someone on which one would be my best bet to use.
I am going with this solution because the specialized apps on my C drive are very difficult to install and configure, so I do not want to put in a bigger C drive and have to load everything back and reconfigure.