2807: Acronis True Image Fails to Mount Images Larger Than 2 Terabytes

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Last update: 10-08-2009

When trying to mount an image of over 2 TB in size, Acronis True Image errors out with "Cannot assign a drive letter"

This article applies to:


  1. Using Acronis True Image you are trying to mount an image of a disk or partition of over 2 Terabytes in size;
  2. Acronis True Image fails to mount the image with an error message similar to the following one:

Cannot assign a drive letter

Alternatively, the mounting can be successful, but the mounted disk is of unexpectedly small size and cannot be accessed.


When mounting, Acronis True Image emulates the image as a partition of an MBR disk (even if the image is of a dynamic disk). MBR disks do not support partitions larger than 2 terabytes.


You can restore separate files or folders from the image if this is what you would like to mount the image for.

More information

This is a known issue. It will be fixed in future. Unfortunately, there is no specific date for the fix.

See also Maximum Volume Size Supported by Acronis Software.