Extend C drive on Windows Server 2016 without losing data
C drive is the partition where Operating System running from, so you’d better pay more attention when doing something about it. The same with previous versions, C drive in Windows Server 2016 also runs out of space. The fastest way to solve this problem is extending C drive with Free or Unallocated space in this disk.
However, some people feedback disaster while doing this. In this article, I’ll show you how to extend C drive partition on Windows Server 2016 without losing data.
Be caution of system and data
When system C: drive is running out of space, if you use traditional way to back up, recreate partition and restore, it may waste a whole day. As I said above, the fastest way is extending C drive. However, there is system and data damage risk if you resize and extend disk partition. Some unreliable partition software is called as “data killer” by the people who have experienced such disaster.
This is a model of a MBR style hard disk, as you see, the disk, partition and files are working like a chain. GPT style disk is much better but the strategy to manage files are similar. To locate and modify a file, Operating System will read the parameters in this disk to locate the partition, then locate the files list, finally locate the data area of this file.
For example, when you shrink drive D to extend partition C, the partition software should modify all parameters of both partition. Furthermore, all files in drive D will be moved to new locations, so all parameters of these files must be updated, too. Any incorrect modification causes partition corruption and/or data loss.
In fact, besides software internal error, some hardware issue such as power outage cause part of the parameters failed to be modified, or files failed to be moved. If it happens, you cannot boot Windows or lose files permanently.
The first thing to extend C drive in Windows Server 2016 is backing up and running safe disk partition software. You have backup, but it costs such a long time to restore and verify data if damage occur, server is offline during this period.
Which tool to extend C drive on Server 2016
Among the partition software for Windows Server, NIUBI Partition Editor is highly recommended, because it provides 3 ways to protect system and data.
NIUBI Partition Editor is designed to work in virtual mode. The operations you do won’t be executed immediately. Instead, they’ll be listed as pending on bottom left, you can preview or click Undo to cancel any unwanted operations. Real disk partitions won’t be modified until you click Apply button to confirm.
Cancel at will
Other server partition manager don’t allow you cancelling the ongoing operations even if you did something wrong, because the cancellation causes part of the parameters unable to be modified, then damage occur. But while running NIUBI you can cancel the ongoing operations at any progress without losing data.
1 Second Rollback
NIUBI Partition Editor provides unique 1 Second Rollback technology to ensure system and data intact. If any software or hardware issue occur while resizing disk partition, it automatically reverts the server to original status in a flash. If it happens, nothing will be changed or lost. This is innovation in Disk Management industry.
Besides system and data safety, keeping online is also important to a server. NIUBI has additional benefits when you extend C drive in Windows Server 2016:
When you shrinking drive D, the start position of this partition is changed, so all files in it will be moved to new locations. It is a heavy work and costs much time especially when there are large amount of files. A good algorithm is very helpful to reduce time, especially when the modification requires server rebooting. Thanks to the unique file-moving algorithm, NIUBI Partition Editor is 30% to 300% faster than ANY other tools
NIUBI Partition Editor provides Hot-Resize technology to shrink and extend partition without rebooting. (Close the running applications and opening files/folders in the partition that you want to shrink before starting NIUBI.)The pending operations marked as can be done in Windows and the ones with should be reboot to complete.
If you find any operations that require rebooting, you may close NIUBI, close the applications or files/folder, and then restart NIUBI to repeat. If the pending operation still shows as it means that there are some services cannot be closed in this partition. In this situation, all other partition software require reboot.
Then how to extend C drive partition on Windows Server 2016 without losing data?
Extend C partition by shrinking D
In most of the server machines, there is another drive D in the same disk, so you can shrink D to get Unallocated space and then add into C drive. By doing this, everything keeps the same after resizing.
Download NIUBI Partition Editor, you’ll see all separate partitions and disk with graphical partition configuration on the right side. Available operations to the selected disk or partition display on the left side.
Right click drive D and select “Resize/Move Volume” feature, drag the left border rightwards in the pop-up window.
Click OK, 20GB Unallocated space is produced behind C drive.
Right click C drive and select “Resize/Move Volume” again. Drag the right border rightwards to combine the Unallocated space.
Click OK, partition C is extended to 50GB.
As you see, there are two pending operations on bottom left, click “Apply” on top left to start extending.
Get free space from nonadjacent partition
If there is not enough free space in the adjacent drive D, you can get free space from any other partitions in the same disk. In this situation, you just need 1 additional step to move Unallocated space from right side of D to the left.
To move the Unallocated space, drag the middle position toward the other side.
If you still do not understand, watch the video how to shrink partition and extend C drive in Server 2016:
It is very easy to resize and extend partition C in Windows Server 2016, but because of system and data damage risk, you’d better use safe partition software. Thanks to the powerful data protection and fast moving ability, NIUBI Partition Editor is the best tool to accomplish this task.