It can't be better if you can add more free space to C drive when it is getting full, otherwise, you have to recreate partitions and restore everything from backup. In that case, server will be offline for such as long time. There are many tools and several ways to help add free disk space to C drive in Windows Server 2019. In this article, I'll show you how to add space to system partition C with Windows native Disk Management and the safest server partition software.
Windows native Disk Management and diskpart have the ability to add Unallocated space to C drive without losing data, however, they only work under particular condition. Because of some limitations, they are not the best tool. Disk Management has graphical interface, diskpart works via command prompt. Although they work in different way, they have same limitations while shrinking and extending partition. Here I only show you have to add disk space to C drive with Server 2019 Disk Management tool. If you are interested with diskpart, follow the steps below:
To add space to system partition C, your disk partition configuration must meet all requires below:
If your disk partition configuration meet the requirements, follow the steps to add more space to C drive in Windows Server 2019:
It is much easier to add disk space with partitioning software, you just need to drag and drop on the disk map. The most important, there are no such limitations.
Before starting, you'd better make a backup and select the safest tool, because there's potential system damage and data loss risk while resizing disk partition. Better than other disk partition tools, NIUBI Partition Editor has advanced technologies to protect system and data:
How to add free space to C drive in Windows Server 2019 from other partitions:
In some servers, there's no other data partition or unavailable free space on the same disk. In that case, no software can add free/Unallocated space to C drive from another separated/different disk, but you can add additional space to C drive in Windows Server 2019 by copying disk to a larger one. Follow the steps in the video:
If you run Windows Server 2019 as guest virtual machine in VMware or Hyper-V, firstly check if there's available free space on the same virtual disk. If yes, simply follow the steps in first video and there's no difference.
If there's unavailable free space on the same disk, unlike local server to copy physical disk, you can expand virtual disk directly.
Besides shrinking, extending, moving and copying disk partition, NIUBI Partition Editor helps do many other disk partition management operations.