Destination Directory can't be root.

[isidroco]

This command: HoboCopy.exe c:\Windows\System32\config D:\ SYSTEM
Will fail: Creation of directory failed with error Access is denied. (Error number 5) on directory \?\D:
Same command with a subdirectory will succeed to backup SYSTEM registry file:
HoboCopy.exe c:\Windows\System32\config D:\bak SYSTEM

Another issue is to find download for Binaries, links on github not working.