Z:\>c:\cygwin\bin\cygwin-mount-points.bat

Z:\>echo Removing all Cygwin mount points
Removing all Cygwin mount points

Z:\>C:\Cygwin\bin\umount -A

Z:\>C:\Cygwin\bin\umount -c -s

Z:\>C:\Cygwin\bin\umount -c -u
umount: remove_cygdrive_prefix: No such file or directory

Z:\>echo Setting Cygwin system mount points
Setting Cygwin system mount points

Z:\>C:\Cygwin\bin\mount -c -s -t /

Z:\>C:\Cygwin\bin\mount -f -s -b C:/Cygwin /
cygwin warning:
  MS-DOS style path detected: Z:\
  Preferred POSIX equivalent is: /z
  CYGWIN environment variable option "nodosfilewarning" turns off this 
warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames

Z:\>C:\Cygwin\bin\mount -f -s -b C:/Cygwin/bin /usr/bin
cygwin warning:
  MS-DOS style path detected: C:\Cygwin\usr\bin
  Preferred POSIX equivalent is: /usr/bin
  CYGWIN environment variable option "nodosfilewarning" turns off this 
warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames

Z:\>C:\Cygwin\bin\mount -f -s -b C:/Cygwin/lib /usr/lib
cygwin warning:
  MS-DOS style path detected: C:\Cygwin\usr\lib
  Preferred POSIX equivalent is: /usr/lib
  CYGWIN environment variable option "nodosfilewarning" turns off this 
warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames

Z:\>