docs: def get_system_drives():
      """
      Get the available drive names on the system. Always returns a list.
      """
      drives = []
      if os.name == 'nt':
          import ctypes
          bitmask = ctypes.windll.kernel32.GetLogicalDrives()
          letter = ord('A')
          while bitmask > 0:
              if bitmask & 1:
                  name = chr(letter) + ':' + os.sep
                  if os.path.isdir(name):
                      drives.append(name)
              bitmask >>= 1
              letter += 1
      else:
          current_drive = get_drive(os.getcwd())
          if current_drive:
              drive = current_drive
          else:
              drive = os.sep
          drives.append(drive)
  
      return drives