This morning I ran disk formatting tests in DVR+ versions 134R and 132R to see if they format a 3TB USB EHD to the full capacity of the disk. Unfortunately, they did NOT!
Both left 746.49 GB unallocated on the 3TB disk. As such, the formatting fix that came in 124R has been broken.
I install version 124R, and as expected it formatted the EHD to the full 3TB capacity (2,794.4 GB). Also as expected, after reinstalling 134R, the EHD formatted in 124R was accepted without having to initialize it. The EHD was returned to Win10 to verify it was still fully formatted, and it was.
Unless the developers fix this issue again, anyone with a USB EHD larger than 2TB will have to temporarily install DVR+ 124R in order to format the EHD to it’s full capacity. That said, it’s unknown if there is a maximum size supported, but we do know a couple of 4TB disks are reported to work well. It's also unknown what would happen if someone replaced an internal HDD with a HDD larger than 2TB. I suspect it would have the same issue in 132R and 134R, and assume temporarily installing 124R would resolve the problem.
I did not try bringing the under formatted EHD to a Linux system to see if the 2TB partition could be extended to include the unallocated space. That did NOT work prior to 124R, but it might work now that version 132R and 134R accept 3TB disks fully formatted in 124R.
As a side note, Windows 10 Disk Manager would NOT allow doing anything with the unallocated space. I had to use a 3rd party disk manager (Paragon Hard Disk Manager 12) to work with the unallocated space, and to fully format the disk. I suspect other hard disk managers will work as well. Edit:
Later I found this to be because the disk was MBR, and after converting to GPT the unallocated spaces merged, and all disk management functions returned.
Another side note, for those unaware, the DVR+ STB Health cannot
be used to determine the size of the disk partitions. The HDD Size it reports is simply the capacity of the disk, not
the combined size of the 2 partitions. The disk must
be connected to a computer to determine partition sizes, and to see if any space is unallocated.