To Windows computer users, the most common issue is that system C drive running out of space. Besides freeing up disk space, the best method is extending C drive with Unallocated space or free space in other volume. To extend C drive space for Windows server and PC, there are 3 tools: DiskPart command, Windows Disk Management and NIUBI Partition Editor. This article introduces detailed steps to expand system C drive with each tool.
In Disk Management of Windows 10/8/7/Vista and Server 2019/2016/2012/2008, there is built-in Extend Volume functionality, which can be used to extend C drive without losing data. However, it only works under restricted condition, because it has many limitations such as:
If your disk partition configuration doesn't meet the requirements, Extend Volume is greyed out and disabled.
Steps to extend C drive partition with Disk Management:
Do not delete drive D if you installed programs in it.
You can't extend C drive in Disk Management by shrinking D or any other volume, because you won't get right contiguous Unallocated space to enable Extend Volume function.
DiskPart is working from command prompt, which is more difficult than Disk Management. To extend C drive with DiskPart, your disk partition configuration must meet the same requirements listed above. In Windows XP and Server 2003, there's no Extend Volume function in Disk Management, so if you don't want to use third party software, diskpart command is the only option.
Diskpart doesn't show Unallocated space and disk partition structure, it only display all partitions in a list.
Steps to extend C drive volume with diskpart command prompt:
In a short time, diskpart reports successfully extended the volume. Type list volume again, as you see, my C drive is increased from 40GB to 110GB.
With NIUBI Partition Editor, there are no such limitations. You can extend C drive by shrinking D or other partitions on the same disk, therefore, Operating System, programs and anything else keep the same with before. You just need to drag and drop on the disk map. To Windows 10/8/7/Vista/XP home computer users, there's free edition.
Download NIUBI Partition Editor Free and follow the steps in the video to extend C drive space:
There's no difference to shrink partition and extend C drive on Windows server, no matter you use physical hard disk, any types of hardware RAID array or VMware/Hyper-V virtual disk. Better than other server partition software, NIUBI Partition Editor is much safer and faster because of the innovative technologies such as:
Besides shrinking and extending partition, NIUBI Partition Editor helps do many other disk partition management operations.