Technical support

Knowledgebase: Error Messages
Error "This copy of windows is not installed on the Primary Boot drive" displayed when starting Full Disk Encryption
Article ID: KB479 email a link to this article


When you attempt Full Disk Encryption (FDE) on a client workstation, the following error appears and you are unable to start FDE.

You may also see this error in the events of the Enterprise Server when you attempt a Full Disk Encryption (FDE) on a managed workstation.



The System and Boot Partitions are located on separate disks, similar to the image below:

This is possibly due to your workstation containing more than one disk where the operating system was re-installed separately or the disk hasn't been cleaned prior to re-installation, resulting in Windows installing the two components on separate disks.



You will need to ensure that the System and Boot Partitions are located on the same disk as shown in the image below:

This may entail making a backup of your data and having to re-install the Operating System with only 1 disk present or after cleaning the disks using diskpart.



Related Articles:

How do I find which version of DESlock+ is installed?

How to take a Disk Management screen shot.

How can I tell if my computer is using UEFI and Secure Boot?



 Keywords: boot primary system drive not installed disk safe start error 0xC02C000B

Keywords: UEFI EFI GPT FDE SecureBoot 8.0 8.1 primary drive boot system partition disk management

We use cookies on our website to enhance your browsing experience. Read more