Confirm the validity of a DR Image by Mounting the DR Image volume as a drive letter (Virtual Drive) in Windows.
NovaBACKUP, starting with v15, have a way to mount a DR image volume to a drive letter in Windows (as a virtual drive) to check if the image is valid and to be able to perform single file restore of files from within a completed DR image. It is not so obvious how to utilize that feature so this is the guide:
First of all you can only mount a DR image to a drive letter in Windows, as a virtual drive, if the DR image itself is stored on a locally connected storage device. A DR image located on a network path cannot be mounted even though the file browsing interface allows you to browse to a network path to select the DR image, the image will not mount if it is located on a network path. Copy the DR image(s) to a locally connected storage device such as a USB hard drive in order to do this if that is the case.
To confirm that a Full, Differential or Incremental Disaster Recovery (DR) image is valid you can use the "Mount backup image volume to a drive letter" feature inside NovaBACKUP, running in Windows, from the "Home tab -> Disaster Recover Wizard -> Launch Disaster Recovery Tool for Backup/Restore/Boot CD Creation -> Tools" area of NovaBACKUP running in Windows. You mount that .NDF file as a Virtual Drive in Windows to mount all of the volumes contained in the image to a virtual drive letter in Windows. If the volume does not mount then the DR image is probably not fully valid. When you go to mount the DR image, whether it is a Full DR or Differential/Incremental DR, you will by default only be able to browse for .NDF (Full DR), to browse and mount Differential/Incremental DR files you will have to change the "Files of type:" pull down menu to "All Files (*.*)" to see the DR Differential (.NDD) or .DR Incremental (.NDI) image files to mount those type of DR images to a virtual drive in Windows. If the Mount does not work follow the instructions below to see why that can be and what you can do to correct that. If you have followed all of the instructions in the following guide and the DR image volume still cannot mount then that DR image is probably not 100% valid.
If when clicking the "Mount" button after selecting the volume to mount you get a message about"Unable to mount" right away, first make sure you are not mounting a DR image located on a network path as that is not supported, copy that DR image file to a locally connected storage device such as a USB hard drive and re-try this operation. The other reason would be possibly due to the currently installed and in use Disaster Recovery Driver not being the correct version (this is shown in Control Panel -> Programs and Features -> "Disaster Recovery Drivers" installed application and the version column text for the installed driver version for that application should show up as the same version of NovaBACKUP client that you have installed such as "16.5.1215" shown in the version column of the Programs and Features area for the installed application named "Disaster Recovery Drivers". If that is the case and the version does not match, it could be because you did not restart your computer after installing or upgrading NovaBACKUP software and that is pending to correct the driver, restart the PC to fix that. You may also receive a message when trying to Mount a DR image volume that says "A restart of your PC has not been performed, restart PC". If that is the case you will be required to restart your PC to get the Mount function to work. If after rebooting your machine you still cannot get the "Mount image" function to work with the same "A restart of your PC has not been performed, restart PC" error message then you will want to read our guide on repairing the Disaster Recovery driver which we have a step-by-step guide on that here to follow, make sure to perform "Method A" in the guide only:
NOTE: Warning regarding attempting to execute new DR image jobs, set to overwrite mode, which attempt to overwrite existing DR images and that have already been mounted as a drive letter using the DR mount feature, will fail because the file is still open by Windows. This should be obvious but if you attempt to execute a new DR image backup which utilizes Overwrite write mode and you have a DR image volume mounted as a drive letter in Windows then any new DR images will fail to save since they are trying to overwrite an existing file in use by Windows because of the DR image being mounted.
Because of the "Disaster Recovery Mount image volume as drive letter" feature if someone had mounted a DR image .NDF/.NDD/.NDI from the DR Tools area and then attempts to run another DR image which is set to "Overwrite" for the write mode (the default write mode is Overwrite).
The DR Error code seen in these cases after a few minutes of execution (when trying to take a new DR Full/Diff/Inc image that was attempting to overwrite the existing, which would be the default option for DR writing):
Result = 1, ErrorCode = c0000001 c0000240.70013.1638.69
Result = -2147023170, ErrorCode = 0