My HDD is converted to dynamic disk mistakenly
“I have an external SanDisk HDD connected my computer that running Windows 7 and it
has been converted to dynamic disk somehow. I try to convert it back to basic disk.
But when I right it, I find that the option of “Convert to Basic
Disk” greyed out. Is there anyone can tell me how to change my HDD back
to basic after it is accidently converted to dynamic. Thanks!”
Convert your dynamic disk back to basic with Window built-in tools
In fact, you can convert a dynamic disk back to basic disk via Disk Management or
Diskpart, if you remove all volumes on the hard drive at first. As removing all
volumes will erase all data on the disk, you can backup all necessary files in
Convert to basic disk via Disk Management
Disk Management is a Windows
built-in tool. It allows you to delete, resize partition and so on. See how to
convert to basic using it.
1. Backup all wanted data on the dynamic disk.
2. In Disk Management, locate the disk that has been accidently converted to dynamic
disk, right click the partition on it and choose “Delete Volume”.
3. After deleting all volumes on the dynamic disk, you’ll see it was shown as
unallocated space. Right click the dynamic disk and choose “Convert to Basic
Convert to basic disk via Diskpart
If there are multiple volumes on the dynamic disk, it is troublesome to delete one by
one. Thus, you can turn to Diskpart.
Here are detailed steps:
1. Backup all necessary data on the dynamic disk.
2. Press “Windows”+ “R”, type “diskpart” and hit
3. In the diskpart interface, run the following commands:
select disk m
PS.:“m” refers to the disk number of the dynamic disk that will be
converted to basic.
Change the dynamic disk back to basic without deleting volumes
If you don’t want to suffer from backing up data and deleting volumes, this
comprehensive and reliable partition manager software –AOMEI Partition Assistant
Professionalcan be your solution. It can safely convert dynamic disk to
basic within few seconds; in the conversion, it ensures system bootable and data
security. Let’s see how it works.
Step 1.Install and run AOMEI Partition Assistant. In the main
interface, click “Dynamic Disk Converter”.
Step 2.Click “Next” to enter the screenshot as
follows. Choose a proper one for dynamic to basic conversion between the two methods
based on your specific situation. Here Method 1 is selected.
Step 3.Among listed dynamic disks, select the one that you want to
convert to basic and click “Next”.
After a while, your dynamic disk will be converted to basic successfully.
AOMEI Partition Assistant Professional is compatible with Windows
10/8.1/8./7, XP and Vista. If you need to convert dynamic disk to basic in
Windows Server, try AOMEI
Partition Assistant Server.
To manage dynamic disk and volumes on it conveniently and effectively, you
can use AOMEI Dynamic Disk Manager as well.
Wrap Things up
When your basic disk is accidently converted to dynamic, you can convert it back to
basic quickly after deleting volumes within Disk Management or Diskpart. If there
are no files or no necessary files on it, it is acceptable to do so. But what if
there are many important files on the dynamic disk or the operating system is
installed on this disk?
It is not recommended to apply such measures and you can
convert the dynamic disk to basic without data loss via AOMEI Partition Assistant.
It is also featured with other helpful functions like copying disk,
migrating OS to SSD, make conversion between MBR and GPT etc.