Extend system drive 2012

Windows Server 2012 extend system partition

This article introduces how to extend system partition on Windows Server 2012 (R2) without losing data. Shrink drive D or E to extend system volume C by dragging and dropping.

System partition is getting full

Comparing with data partitions, the system volume is very likely running out of space after running the server for a period of time. Even if you installed all programs to anther volume D, there are still large amount of junk files generated in system C drive.

If you contact support from server OEM manufacturers, they’ll tell you to back up, delete and recreate all partitions, finally restore everything. Don’t do like this, with right tool you can extend system volume for Server 2012 without reinstalling OS or restoring from backup.

However, you should always pay attention to any operations to a server, before resizing and extending system partition, there are several points you should know.

The points before extending system drive

1 Take Care of system and data

Different with read-only programs, disk partition software will modify the parameters of related disk, partition and files, so there is potential risk of system and data damage. Remember to back up the server before shrinking and extending partitions.

However, it doesn’t mean you can select any tool. It costs such a long time to restore and verify data if disaster caused by some unreliable software.

Better than other partitioning software, NIUBI Partition Editor provides innovative 1 Second Rollback technology, which is able to reverts the server to original status in a flash if any software or hardware issue occur. If it happens, server could back online in a short time without damage.

 About hardware RAID arrays

In fact, there is no difference between single hard disk and hardware RAID virtual disk to Operating System. When shrinking data volume and extending system partition on Windows Server 2012, you don’t need to do any operations to the RAID controller.

Don’t break the RAID array and follow the steps below.

3 Select solution according to partition configuration

  • To most of the servers, there is adjacent partition such as D on the right side of drive C in the same hard disk, so you just need to shrink it to get some Unallocated space, and then add into the system C drive.
  • If you want to shrink or delete the non-adjacent drive E to extend system volume, you need an additional step to move Unallocated space from right side of D to the left.
  • If there is no other partition or no free space in all other data volumes, no partitioning software can help you extend system partition by getting space from another separated hard disk. But you can clone the disk to another larger one with NIUBI Partition Editor, extend partition with the extra space in the larger disk.

How to extend system volume on Server 2012

First I’ll show you the most common method: shrink D to extend system drive C.

Download NIUBI Partition Editor and you’ll see all disk partitions with graphical layout on the right, available operations to selected disk or partition are listed on the left or by right clicking.

NIUBI Editor

Steps to extend system partition on Windows Server 2012 (R2):

Step 1 Right click the contiguous partition (D) and select “Resize/Move Volume”, drag left border rightwards in the pop-up window:

Shrink D rightwards

This partition (D) is shrank and Unallocated space is produced on its left side.

Drive D resized

Step 2 Right click C drive and select “Resize/Move Volume” again, drag right border rightwards to combine the Unallocated space in the pop-up window.

Extend C drive

System partition C is extended to 60GB.

C drive extended

 Click Apply on top left to execute, done.

Tips NIUBI is designed to work in its virtual mode, the operations you do will be listed as pending and real disk partition won’t be modified until click Apply to confirm.

Extend system partition from non-adjacent drive

No matter you delete or follow Step 1 above to shrink drive E, the Unallocated space is not contiguous to the system partition. As I said, you need an additional step to move Unallocated space.

Right click drive D and select “Resize/Move Volume”, drag middle position rightwards in the pop-up window:

Move partition D

Unallocated space will be moved from right of D to the left. Follow Step 2 above to add the Unallocated space to C drive.

Extend system partition by cloning

Both source and target disk could be single physical hard disk to RAID virtual disk, follow the step to clone disk.

Besides shrinking, moving and extending partition on Windows Server 2012, 2016, 2019, 2008 and 2003, NIUBI Partition Editor helps you do many other operations, learn more.