Iterate Directories with Batch - batch-file

Question

The objective is to display the directory name in MYFOLDER.
MY.exe exists in the folder, but curiously, without the wildcard in ...\desktemp*, the "#echo Showing subfolders" is never displayed, but "#echo G is working" is. However MY.exe is never found when moved to one of the subfolders.
OTOH the current code never finds MY.exe and never displays "#echo G is working" but properly lists each subfolder: "#echo Showing subfolders".
The other problem is the pauses at the end of the block are never reached.
Substituting the inner For with
cd \Users\%USERNAME%\Desktop
for /D /r %%G in ("desktemp*") do (
gets essentially the same result. My.exe isn't found if moved to one of the subfolders of desktemp.
Setlocal EnableDelayedExpansion
set CURRDRIVE=C
SET MYFOLDER=
:SEARCHDRIVES
REM BLOCK
for %%B in (C) do (
if exist %%B: (
PUSHD %%B:\
if NOT DEFINED MYFOLDER (
ECHO "%CD%"
REM This always displays path batch is run from.
REM The above Pushd doesn't change to C:\
for /f "tokens=*" %%G in ('dir /b /s /a:d "%%B:\Users\%USERNAME%\Desktop\desktemp*" ^| find "\"') do (
#echo Showing subfolders
#echo %%G
pause
if exist "%%G\MY.exe" (
call set MYFOLDER=%%G
#echo %%G
#echo G is working
call echo %MYFOLDER%
pause
GOTO GOTMYFOLDER
)
)
)
)
REM Exist Drive
)
REM Drives Loop
:GOTMYFOLDER
cd /d %CURRDRIVE%:\
echo %MYFOLDER%
cd %MYFOLDER%
pause
The above is a chunk whittled from a larger code block: the ultimate aim will be to get the folder names"\Users\New\Desktop\desktemp" into a variable via prompt.
Are the Escape Characters, Delimiters and Quotes in the nested blocks implemented properly?

Answer 1

The answer escaped this poor little brain until it cottoned on to what the "DIR" and "For /D /R" were really up to. What was sought for was in the addition of a new "For /D" (no /R).
This first (extra) "For /D" determines the folder names to iterate from.
(Specifically anything but the Windows directory where we run into problems with >260 filenames.)
This locates the MY.exe file somewhere in the Users folder (more precisely in any root folder beginning with U):
Setlocal EnableDelayedExpansion
set CURRDRIVE=C
SET MYFOLDER=
:SEARCHDRIVES
REM BLOCK
for %%B in (C) do (
if exist %%B: (
PUSHD %%B:\
if NOT DEFINED MYFOLDER (
ECHO "%CD%"
REM This always displays path batch is run from.
REM The above Pushd doesn't change to C:\
for /D %%Z in (U*) do (
cd \%%Z
for /D /r %%G in ("*") do (
if exist "%%G\MY.exe" (
call set MYFOLDER=%%G
#echo %%G
#echo G is working
call echo %MYFOLDER%
pause
GOTO GOTMYFOLDER
)
)
)
)
)
REM Exist Drive
)
REM Drives Loop
:GOTMYFOLDER
cd /d %CURRDRIVE%:\
echo %MYFOLDER%
cd %MYFOLDER%
pause
Edit:
The source of the error spam in the comment below is this command:
Insert batch code to elevate UAC privileges [code][1] from TanisDL
Setlocal EnableDelayedExpansion & pushd "%CD%" & CD /D "%~dp0"
set CURRDRIVE=C
FOR /F "usebackq delims==" %%G IN (dir %CURRDRIVE%:\ /A:D /O:G /S /B ^| FIND /I "myString") DO (set "foundMyString=%%~pG")