It is interesting to see how Mac users can rotate the limited storage of their hard drive. We all know that Mac offers a definite amount of storage in all the Mac versions whether it is Mac Book Pro, MacBook Air or iMac maybe. Limited availability of hard drive storage or we can say a single partition sometimes restricts users to make use of multiple operating systems on their Mac. It actually depends on the usage and purpose of users how they can manage their hard drive storage to complete their day to day work effectively. But one simple solution is to connect an external hard drive or an SSD in your Mac which somehow provides more space to work on.
However, when it comes to installing multiple operating systems than Mac users definitely need more partitions. It is not possible in any way to run multiple OS on the same partition and for that splitting the Mac hard drive is the only simple solution.