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How to Convert/Change Simple Volume to Primary Partition

Updated on Dec 10, 2018 by Jean to Partition Master

How to convert and change simple volume to primary partition without data loss? EaseUS Partition Master provides Convert Dynamic to Basic feature to help you easily change simple volume to primary under Windows 10/8/7/XP/Vista/2000/2003/2008 32 bit and 64 bit.

Problems: Cannot Convert Simple Volume to the Primary Partition

"I have just installed and formatted an additional hard drive. I am using Windows XP Professional SP2. In Computer Management, the new drive shows as Simple Volume/Dynamic. Can someone tell me how to convert the simple volume to primary partition?"

"I needed to split my hard disk into 4 partitions. After doing so, all partitions became simple volumes but not primary even where my Vista is. Windows Vista is booting correctly and working correctly. Is there any way to change simple volume to primary? Thanks!"

"Can anyone tell me if I can change a simple volume to a primary partition? Our system drive was mirrored to another disk. We broke the mirror as we needed the other disk. The system drive (C :) is now a simple volume. And whole system disk is a dynamic disk. The problem is that we can't make the partition into a primary. Any ideas?"

Overview of Simple Volume and Primary Partition

The simple volume is dynamic storage which functions as a primary partition in Windows NT 4.0 and its older versions, can only be created on a dynamic disk.

The primary partition is a partition which can be used to boot an Operating System, can only be created on a basic disk with MBR or GPT partition table under all Windows systems.

Solutions to Change Simple Volume to Primary (Convert Dynamic Disk to Basic)

As we know, Windows Disk Management supports to convert a basic disk to dynamic disk. But you cannot convert the dynamic disk back to basic disk directly without deleting the volumes and repartition the disk by using this tool. 

It's not available to Convert dynamic disk to basic in Windows Disk Management as shown below:

Convert dynamic disk to basic unavailable

In this case, third-party disk management alternative software - EaseUS Partition Master will save your energy to change the simple volume to primary without deleting or removing any data.

EaseUS Partition Master provides "convert to basic disk" feature to realize this task with easy clicks without any data loss. 

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 Windows 10 is supported

The 'Convert to basic disk' feature is only available in Pro and even Technician version of EaseUS Partition Master. Therefore, to gain a smooth converting process, please activate it first by clicking the activation button below.

EaseUS Partition Master

Change simple volume to primary now.


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And if this software doesn't work, contact our tech support team for an online help right away: support@easeus.com. 

3-Step Tutorial to Convert Simple Volume to Primary Partition with Easeus Partition Master

The following is a step-by-step instruction for you to try with dynamic disk converting software - EaseUS Partition Master Professional:


Step 1: Install and open EaseUS Partition Master on your Windows computer by clicking the download button.

EaseUS Partition Manager software

Step 2: Select dynamic disk which you want to convert to basic. Right-click it and choose "Convert to Basic".

convert dynamic to basic

Step 3: Click "OK" on the pop-up window and you will add this conversion to the pending operations.

convert dynamic to basic

Step 4: Click the "Execute 1 Operation" button at the top-left corner and "Apply" to begin to convert dynamic to basic disk. After that, you can also use this partition manager to resize/move, clone, merge, format, and delete the partitions. 

convert basic to dynamic

The program will automatically convert all these simple volumes in the dynamic disk to primary and logical partitions.


  • If your dynamic disk is an MBR disk and there are more than 4 simple volumes, after the converting, you'll get 4 primary partitions, and the rest will become logical partitions. When you haven't reached the upper limit, you can use EaseUS Partition Master to convert logical to primary. But if your dynamic disk is GPT, all simple volumes will turn into primary partitions after processing the above steps.
  • This Convert to basic disk feature can only work on a dynamic disk with simple and mirrored volumes. Spanned volume, striped volume in the dynamic disk are not supported.
  • All other operations are not available when "Convert to basic disk" is applied.