How to Merge Unallocated Disk Space to C drive on Dynamic Disk?

  Note: This article applies to Dynamic Disk Storage. Content in this article may not be relevant to you. Visit how to merge unallocated space to C drive under Basic Disk Storage.

Question: "Dynamic Disk Partition in Windows Server 2003"

I've got a Windows Server 2003. It has 60GB single disk which shows in Disk Management as being dynamic. I have a C: partition at 5.86GB, a data D: partition at 36.10GB, and 18.04GB unallocated space. I'd like to merge 18.04GB unallocated space into the C: drive. I've tried from Disk Management but it tells me "The selected volume is a system or boot disk or was created on a basic disk in an earlier version of Windows and cannot be extended". Is there anyway of merge this unallocated disk space?

How to merge unallocated space to C: drive if you have encountered the above problems? The following will show how to tackle this problem.

How to merge unallocated space to C: drive?

Under dynamic disk storage type, all Windows Disk Management snap-in only allow you to extend simple/spanned volumes into unallocated space from the same disk or another disks. Expanding system/boot volume or striped/mirrored/RAID-5 dynamic partitions is impossible.

AOMEI Dynamic Disk Manager provides full-featured dynamic disk partition management solution for home and enterprise users. All your dynamic partition and disk maintenance requirements can be fulfilled with basic and advanced features, such as resize dynamic disk, extend dynamic system partition, shrink dynamic volume, convert dynamic disk to basic, expand RAID-5 dynamic partition and add drive to RAID, etc.

The tutorial will take Windows Server 2003 for example on how to merge unallocated space to C: drive and it also applies other operating systems, including Windows Server 2008/2000 and Windows 7/8/Vista/XP/2000.

Step1: Launch AOMEI Dynamic Disk Manager Server Edition, then right-click D: partition and select "Resize/Move Volume".

Step2: In the pop-up window, position mouse pointer on D: partition and move it to the right. Then, click "OK" to get back to the main window.

Step3: Right-click C: drive and select "Resize/Move Volume". In the pop-up window, drag the right slider rightwards to merge unallocated space to C: drive. Then, click "OK" to get back to the main window.

Step4: Click "Commit" on the toolbar.

After clicking "Commit", a window will pop up and lists the pending operations. Click "Proceed" to execute.

All the operations need to perform under Reboot Mode. After restarting computer, you will find the unallocated space has been merged to C: drive successfully.

To test whether AOMEI Dynamic Disk Manager is compatible with your computer systems and satisfies all of your requirements, please download free trial.

Note: If C: drive is mirrored/RAID-1 dynamic partition, please visit how to extend mirrored volume.

Tips: Choose the right version according to your needs or operating systems.

• AOMEI Dynamic Disk Manager Pro Edition is especially designed for business users to manage dynamic disk storage type for optimal performance in Windows 7/8/Vista/XP/2000 both 32 bit and 64 bit.


• AOMEI Dynamic Disk Manager Server Edition provides award-winning Software RAID management solutions. Besides, it is also a dynamic disk/volume management software and disk converter in Windows Server 2000/2003/2008/2011/2012 and Windows 7/8/Vista/XP/2000.


• For Enterprise users, AOMEI Dynamic Disk Manager Unlimited Edition allows unlimited usage within one company to save money. It is a wise and cost-effective choice.


• For IT services providers, AOMEI Dynamic Disk Manager Technician Edition is recommended; it allows to offer technical services to multiple clients.