I have a registry key under
The value of the key is
"c:\windows\system32\cmd.exe" /c subst t: e:\MyFolder
More often than not when I boot the computer the subst command appears to only half work. If I open a command prompt I can use t: fine. However if I look in windows explorer T: is not there and if I type it into the address bar I get an error message saying "Windows can't find 't:'. Check the spelling and try again."
This is on Windows 7 Enterprise 64 bit.