[megaloman]

В переменную %Papka%

Код:

@echo off
cls

Set "DiskName=D:"
Set "DirName=Моя папка"

for /f "usebackq delims=" %%p in (`Dir "%DiskName%\%DirName%" /S /B /A:D 2^>nul`) Do Set "Papka=%%p" & GoTo :Continue

Echo Disk="%DiskName%"  Dir="%DirName%"  not found
pause
GoTo :Eof

:Continue
Echo "%Papka%"
pause