12082: Acronis Disk Director 11: "Convert to GPT" Is Unavailable for System Disk

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Last update: 15-09-2011

This option has been disabled for system disks or partitions on system disks

This article applies to:

  • Acronis Disk Director 11 Home
  • Acronis Disk Director 11 Advanced


There is no option to convert to GPT for a disk which contains active operating systems on some of the partitions (usually this is a system disk):

This limitation is due to that a GPT disk can boot on Extensible Firmware Interface (EFI) based systems while Acronis Disk Director 11 does not support systems with EFI and therefore the convert to GPT operation on a system disk will cause the system to be unbootable.

More information

See also EFI Based Operating Systems Support in Acronis Products.