Windows7 and windows 2008 R2 VaultDR online backups do not boot after restore (4047235)

Date: FEB 2011
Product & Version: Netvault all
OS Version: windows7, windows 2008 R2
Module & Version: VaultDR online all up to 3.5


Symptoms:

When restoring Windows7 and windows 2008 R2 VaultDR online backups, the system does not boot after restore as the system Active, primary partition is not restored.
The restore completes without warnings.
When checking the binary log for the backup of the failing restore we see the following showing netvault vaultDr plugin warning that it is not able to backup this partition as it fails to retrieve a logical drive letter.
Warning 2011/01/27 15:05:37 45 Data Plugin UKW1907 Failed to get Logical Drive Letter for partition (1) of Disk (0). This partition cannot be backed up


Cause:
Currently windows 7 and windows 2008 R2 have yet to receive supported platform status with vaultdr online, and as such are currently unsupported.
The problem seems to be that VaultDR plugin is unable to backup unmounted partitions, i.e. those without a drive letter assigned to them.