I installed windows 10 on a fresh computer with a single drive. It created 4 partitions (system, c:, hibernation, and recovery).
After freeing up some space on C: and trying to install ubuntu 16.04, the partition space I freed up was "unusable" by ubuntu; looking at other questions on this topic, it seems one cannot have more than 4 partitions on a drive.
My question is, what's the easiest solution? Delete a hibernation partition?