Resize Dynamic Disk in Windows XP/ Vista/7/8/ Server 2000/2003

July 12, 2018

In the past people cannot resize dynamic disk or resize dynamic disk directly. But now with the help of AOMEI Dynamic Disk Manager all of these operations come true. Dynamic disk resizing would never be a hard task.

Thus, users who encountered problem of low disk space always had no solution. In the past users could only solve this problem indirectly by converting dynamic disk to basic with Dynamic Disk Converter, then resize it with some partition manager, such as AOMEI Partition Assistant. About this method you could refer to this article “Three ways to convert dynamic disk to basic”. Today we will not discuss this obsolete method any more, resizing dynamic disk directly with AOMEI Dynamic Disk Manager become a new hot topic. First let’s learn some limitations of the built-in Disk Management (DM) on resizing dynamic disk.

Limitations of Resizing Dynamic Disk in Windows

Dynamic disk helps users maximize data storage performance, especially for small business company. But there is still two major disadvantage of it. When users convert a basic disk to dynamic, it is impossible to convert it back in Disk Management without data loss. Besides, in most conditions, users cannot resize dynamic disk volumes, especially the system volume. In editions before Vista, users were not able to resize dynamic disk conveniently. They can only extend certain types of dynamic volume in Disk Management. List bellow is even impossible to realize:

  • Extend System Volume/Boot Volume.
  • Expand Mirrored Volume.
  • Extend Striped Volume.
  • Extend RAID 5 Volume.
  • Extend the Simple Volume which was converted from the basic disk of Windows XP/2003 and was upgraded from Windows 2000.

As you see, there are so many limitations of Disk Management(DM) on managing dynamic disk, it integrate only a little basic functions, such as create/delete volume, format volume. Obviously, this can't meet our requirements. Therefore, AOMEI Dynamic Disk Manager gradually comes into user’s sight for its powerful function and fresh interface.

Resize Dynamic Disk with AOMEI Dynamic Disk Manager

As we know resize dynamic disk contains extending volume and shrinking volume. How to extend system partition maybe the most visible user concerns.

Here we have an example based on Windows Server 2003, the existing volumes listed below:


As you see, in this example the system partition (C :) is too small (only 3GB) and we cannot resize dynamic disk by the built-in Disk Management. Let’s see how to solve this problem with AOMEI Dynamic Disk Manager.

Note: To increase system partition, there must be a continuous unallocated space behind system partition, we could shrink other volume to generate unallocated space then move it to the right place.

Step1. Launch AOMEI Dynamic Disk Manager Server Edition, right-click drive E, select “Resize/Move volume”.


Step2. In the pop-up window, drag right slider leftwards to shrink volume.


Step3. Position the mouse on the panel; drag it rightwards when the mouse changes to cross. Then click “OK”.


After that you will find there’s an unallocated space behind system drive (C :).

Step4. Right-click system volume (C :), select “Resize/Move volume”, in the pop-up window drag right slider rightwards to increase system volume size. Then click “OK”.


Step5. Finally, click “Commit” on the toolbar to apply the pending operations.

Note: To resize dynamic disk, in order to protect the system volume, the operation will be completed in Reboot Mode, therefore, rebooting is necessary. The software will require for rebooting after click “Commit”.

After waiting for some time (the time it cost is depend on the numbers of data on the volume which you want to resize, the more data on it the longer time it will cost), you may find the dynamic disk is resized successfully.


Resizing dynamic disk with AOMEI Dynamic Disk Manager is just as easy as you see; you could now free download it to experience its magic.

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