ないよりましなので書きました。
net use Z: \user-PC\test 1111 /user:user-PC\user
cd %USERPROFILE%\desktop
xcopy /s/c/e/h/y * Z:\%COMPUTERNAME%\desktop\
cd %USERPROFILE%\Favorites
xcopy /s/c/e/h/y * Z:\%COMPUTERNAME%\Favorites\
cd %USERPROFILE%\Documents
xcopy /s/c/e/h/y * Z:\%COMPUTERNAME%\Documents\
cd %USERPROFILE%\Pictures
xcopy /s/c/e/h/y * Z:\%COMPUTERNAME%\Pictures\
cd %USERPROFILE%\Downloads
xcopy /s/c/e/h/y * Z:\%COMPUTERNAME%\Downloads\