14666: Compatibility of Acronis Backup Software with McAfee Endpoint Protection

Last update: 27-03-2013

Rebuild MBR after restoring the disk encrypted with McAfee

This article applies to:

  • All Acronis Backup Software


McAfee Endpoint Protection (previously known as SafeBoot) is encryption software that allows you to encrypt the entire partition or disk.

Acronis backup software and McAfee Endpoint Protection interfere with each other:

  1. You have your disk encrypted with McAfee Endpoint Protection;
  2. Using Acronis software, you back up the system partition or entire hard disk from Windows;
  3. Then you boot from Acronis Bootable Media and restore the partition or hard disk;
  4. After the restore, the system is unbootable with an error message similar to the following one:

    SafeBoot has been corrupted (error 92h)


Acronis software backed up the original data unencrypted (the data was provided unencrypted by Windows) as well as the MBR.

The original MBR contains some authentication code to bootstrap the encrypted partition. This code is partially, but not completely, restored.

During the boot process the computer attempts to boot the encrypted partition, but as a result of the restore the data is unencrypted.


Rebuild the MBR as described is Restoring Windows Boot Loader Manually.

More information

See also Compatibility of Acronis Backup Software with Encryption Software.