The issue is only with Acronis Bootable Media. As a workaround, convert the disk from Windows
This article applies to:
- Acronis Backup & Recovery 11
- You boot an EFI system from Acronis Bootable Media;
- Once booted, you start Acronis Disk Director Lite (Disk management) and convert a basic GPT disk to the dynamic one;
- 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.
See also Acronis Backup & Recovery 11.