Cannot Create New Directory Under C Drive and copy to it

Question

I'm writing a batch file to setup an environment for a project and I need to create a new directory directly under C: drive. Here's what I wrote. First I check that the file is being executed as Admin, then I check if the file already exists, if it doesn't, create it and go to it. Then I do other things.

  :check_Permissions
    echo Administrative permissons required. Detecting permissions...

    net session >nul 2>&1
    if %errorLevel% == 0 (
      echo Success : Administrative permissions confirmed.
    ) else (
      echo Failure : Current permissions inadequate.
      echo Please, run this file as administrator.
    )

    pause >nul

  if not exist "\C:\NewDir" (
    echo NewDir directory will be created under C: drive. 
    mkdir "\C:\NewDir"
    echo Created NewDir Folder under C: drive.
  ) else (
    echo Directory already exists.
    cd C:\NewDir
  )
  if not exist "\C:\NewDir" ( 
    echo Directory was not created. 
  )
  :next

I don't know why the directory is not created since the file is run as admin, it can't be for lack of permissions...

I also need to copy the contents of a remotely shared directory on another server into the newly created folder. XCOPY is not working. Here's the code:

  XCOPY /s "\\remoteserver\directory\sub-dir\directory-to-copy" "C:\NewDir"

Answer 1

With the help of what BoogieMan2718 and Mofi said, I fixed my batch file. Here's the fixed verison :

:check_Permissions
  echo Administrative permissons required. Detecting permissions...

  net session >nul 2>&1
  if %errorLevel% == 0 (
    echo Success : Administrative permissions confirmed.
  ) else (
    echo Failure : Current permissions inadequate.
    echo Please, run this file as administrator.
  )

  pause >nul

cd C:\
if %cd% == "C:\" ( echo In C:\ drive. )

if not exist "C:\NewDir" (
  echo NewDir directory will be created under C: drive. 
  mkdir "C:\NewDir"
  echo Created NewDir Folder under C: drive.
  echo NewDir will now be copied to your computer. This action may take a few minutes...
  ROBOCOPY /E /V /Z "\\remoteServer\pathToDirectoryToCopy" "C:\NewDir"
) else (
  echo Directory already exists.
)
if not exist "C:\NewDir" ( 
  echo Directory was not created. 
)

Thank you for your help.