20297: Acronis Disk Director: Operation Errors Out with "Cannot process 'Disk #' because its sector size is unsupported"

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Acronis Disk Director only supports disks with 512 bytes logical sector size

This article applies to:

  • Acronis Disk Director (all versions)

Symptoms

  1. You have Acronis Disk Director and intend to perform an operation with the disk with logical sector size not equal to 512 bytes;
  2. Acronis Disk Director does not detect this disk or it cannot perform any operations on this disk if it is detected;
  3. In the log, there are errors, similar to the following:

    Cannot process 'Disk #' because its sector size is unsupported (1024 bytes).

    OR

    Cannot process 'Disk #' because its sector size is unsupported (4096 bytes).

Cause

Acronis Disk Director only supports disks with 512 bytes logical sector size.

Solution

Some USB hubs, adapters and other interconnectors change the logical sector size, that is presented to the system, to 4096 bytes or other values. Try connecting the disk directly to the disk controller on the motherboard via SATA/IDE/SAS/FC cables. If it is already connected this way, there is no other solution at the moment.

More information

Physical sector size parameter is not taken into account, only logical sector size matters for this limitation.

The majority of the disks today have 512 bytes logical sector size. For example, Advanced Format disks have a 4 KB physical sector size and emulate a logical addressing interface of 512 bytes.

See also: Advanced Format Drives Support in Acronis Products

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