21739: Acronis Backup & Recovery 11: Acronis Disk Director Lite on EFI: Converting Basic GPT Disk to Dynamic Erases the Partition

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Last update: 08-04-2016

The issue is only with Acronis Bootable Media. As a workaround, convert the disk from Windows

This article applies to:

  • Acronis Backup & Recovery 11


  1. You boot an EFI system from Acronis Bootable Media;
  2. Once booted, you start Acronis Disk Director Lite (Disk management) and convert a basic GPT disk to the dynamic one;
  3. As a result of the operation the disk space becomes unallocated.


This is a known issue.


As a workaround, start the product in Windows and do the conversion.

More information

See also Acronis Backup & Recovery 11.