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New Way to Change Partition/Volume Size on Dynamic Disk for Windows 7/8/XP/Vista2000/2003/2008/2011/2012

The operations introduced in this article is based on dynamic disk, if you are not sure which disk storage type you have, please identify your disk storage type before reading and the following quick links are listed for general scanning.

Change dynamic partition size by Disk Management

Changing dynamic partition size is good way to make good use of disk space. When the system volume risks the low disk space warning, we have to extend some free space to system volume resolve system partition low disk space alert. So the best way is resize the bigger dynamic volume to free up some unallocated space then extend system volume. But if we choose Windows Disk Management to finish the task, we will receive many message about the operation can not be done. The simple reason is Windows Disk Management can not manage the dynamic disk which contains system partition and resize all the dynamic volumes. (Only simple and spanned volume can be resized)

Is possible to change partition dynamic size?

Windows Disk Management has many limitations so is there any way to change dynamic partition size directly without reinstalling? The answer is YES because there is latest versatile AOMEI Dynamic Disk Manager which could not only manage dynamic disks like extend, shrink dynamic volumes but also could manage dynamic volumes for Windows 7/8/XP/Vista2000/2003/2008/2011/2012 32 & 64 bit easily & safely.

Old real case about changing dynamic partition size

“I'm system administrator at a large transport company. Now we need to expand our system drive on the dynamic volume and reduce the size of our data drive on the dynamic volume, if possible without data loss. We use a raid 5 configuration…More” This is one of the old topics about changing dynamic partition size in forums. The askers wanted to find the best method to fix the low disk space warning. But from the result, they usually could not find the directly method to changing dynamic partition size.

Step-by-step tutorials guide you change dynamic partition size

We take the above real case as an example and set the same environment on Windows Server 2008 to introduce the operations through AOMEI Dynamic Disk Manager Server Edition, please download trial version to take a test together.

  1. Launch AOMEI Dynamic Disk Manager Server Edition to get the dynamic disks partitions status:


  2. Right click the RAID 5 volume and select “Shrink Volume” option in drop-down menu:


  3. In the new window, drag F: partition left side rightwards to directly free up the unallocated space behind the system C: drive. (To do so is in order to avoid the “Move unallocated space” operation)


  4. Right click C: system partition and select “Resize/Move Volume” to get the following new window, drag the right side rightwards to add the unallocated to C: system partition and click “OK”:


  5. Back to the main interface, we could get the preview in main interface and check the operations in advance, if no problem, click “Commit” on the toolbar to take changes into effect, and if any problem, we could do correction by clicking “Undo”, “Redo” or “Discard”. After several minutes and reboot the computer, we will see the changes: C: system partition extended by adding the unallocated space which freed up from the data RAID 5 volume.


So, with several steps, the task seems so complicated before could be handled currently. This is the magic Dynamic Disk Manager which not only could change dynamic partition size but also could ensure data security during the whole process.

Related articles for changing dynamic partitions/volumes size

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