Resize System Partition in Windows Server 2012 happens when low disk space issue come to Server 2012 hard drive, we had to extend C Drive at this time; some server managers, however, found that there're too much free space on C Drive, which makes time of reading and writing in system partition cost too much while proper size of C Drive makes server performance better.
Situations above are common issues that server users often face, Windows Server 2012 has its own server manager disk management, but not well suited the situation we mentioned, third-party partition magic server software is needed when disk partition requirements varies
To extend partition in Windows Server 2012, we have many methods, the best one is to extend partition without data loss, and the most important thing, minimum server downtime. We'll use Partition Magic Server Alternative software – Partition Expert to extend system partition in Server 2012.
To extend system partition, we need to split some space from partition with enough free space. So what happens before extending is always shrinking partition, so we'll show you how to shrink volume when there's not enough space available on the disk.
You can shrink volume in Windows Server 2012 when one partition is running out space while other partitions have enough space, just use Resize/Move Volume function to redistribute disk space without data loss.
Server 2012 in VMware sometimes running on low disk space, so it's necessary to Extend C Drive in Server 2012 Vmware,
Screenshot guide of Extend C Drive in Vmware with Partition Extender