Den, вариант №2
Код:

@Echo Off
SetLocal
Set UNC=\\10.29.9.200\distr
Set Label=distr
For /F "Tokens=2 Delims==" %%A In ('WMIC path Win32_MappedLogicalDisk WHERE ProviderName^=^'%UNC:\=\\%^' Get Name /Value 2^>nul') Do (
Call Net Use %%A /delete /y 1>nul 2>&1
Net Use * %UNC% 1>nul 2>&1
Reg Add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\%UNC:\=#%" /v _LabelFromReg /d "%Label%" /f 1>nul 2>&1
)