Zend certified PHP/Magento developer

Windows Tar Command for Tape Drive

I am trying to generate a command using GNUTar for backing up a folder on Windows 10 to a few tapes (hence my use of multisession). I am using an elevated command prompt window and have cd-ed into the GNUTar folder. Using Uranium Backup Pro: Tape, I have made sure that my tape system is fully functional and is not at fault.

When running the command tar.exe -c --multi-volume -f "D:/Personal Media Archive" * I receive a function not yet implemented error.

When I run tar.exe -c --multi-volume -f "UsersStevenDownloads" * I receive a permission denied error despite taking absolute ownership of the GnuWun32 folder (C: removed based on this Github Issue).

Can someone please advise me of the proper syntax for this command on Windows 10?