What is the point of partitioning a disk with a single (full disk) partition? I see most guides include this step but never a reason why. Partitions have always been about separation (or so I thought), but there is nothing to separate if using the full disk as a single volume. Why have /dev/sdc1 if there is no /dev/sdc2? Surely it makes sense to just use /dev/sdc and install the file system on that? What am I missing?