There can be two different causes: the volume you choose is encrypted by TrueCrypt, or there is a malfunction of Acronis low-level drivers due to incorrect registry value

This article applies to:

• Acronis True Image Home 2011

Symptoms

1. You have Acronis True Image Home 2011;
2. You attempt to configure Acronis Nonstop Backup;
3. For Acronis Nonstop Backup destination you attempt to select an NTFS partition;
4. The following error message prevents you from selecting the partition:

   Cannot back up to non-NTFS partition

   

Cause

There can be two possible causes:

1. You are trying to set Nonstop Backup destination to an item encrypted by TrueCrypt.

   TrueCrypt is an open-source disk encryption software that allows you to encrypt the entire partition or disk or to create an encrypted file container and mount it as a virtual disk. See: http://www.truecrypt.org/

2. There is a malfunction of Acronis low-level drivers due to incorrect registry value.

   (!) The second cause is specific to Windows 64-bit.

   To find out if you have Windows 64-bit, do the following:

   
   

   1. Hit Start and right-click on Computer and select Properties:

      

   2. Check the system type:

      

Solution

1. If you are trying to set Nonstop Backup destination to a mounted volume or file container encrypted by TrueCrypt:

Unfortunately, there is no solution at the moment. Acronis True Image Home 2011 Nonstop Backup currently does not allow backing up to a mounted volume or file container encrypted by TrueCrypt.

As a workaround, use a volume non-encrypted by TrueCrypt as a destination for Nonstop Backup.

2. If you do not have TrueCrypt, and you have Windows 64-bit:

1. Hit Start-Run and type in regedit

   

2. Navigate to HKEY_LOCAL_MACHINE\Software\Acronis\Snapman

   

   Check the Build value. Please remember the value.

3. Then navigate to HKEY_LOCAL_MACHINE\Software\Wow6432Node\Acronis\Snapman

   

   Check the Build value. The Build value here should be the same as above. To make it the same, do the following:

   1. Make sure you are in the HKEY_LOCAL_MACHINE\Software\Wow6432Node\Acronis\Snapman subkey;
   2. Right-click on Build and select Modify:

      

   3. Switch to Decimal:

      

   4. Type in the same number as in the Build value in HKEY_LOCAL_MACHINE\Software\Acronis\Snapman

      

   5. Click OK.
   6. Launch Acronis True Image Home 2011 and try to configure Nonstop Backup again.

More information

If you have further questions or need assistance, please contact Acronis Support.

See also Compatibility of Acronis True Image with TrueCrypt.