In Microsoft Windows, most people run programs by pulling down menus or by clicking on icons that have been carefully placed there by install programs. Thus the idea of a
path along which to search for programs (such as a browser) is no longer useful in Windows.
On my computer the browser program
firefox.exe is in the following directory.
C:/Program Files/Mozilla Firefox
But M2 is a Cygwin program, and it lives in a different world, where paths to files don't ever start out with something like
C:. In that world, firefox's directory is known instead as:
/cygdrive/c/Program Files/Mozilla Firefox
Conversely, the root directory, known in the Cygwin world as
/, could be located anywhere in the Windows world. On my machine it is at
C:/cygwin
Use the
df command or the
mount command in a cygwin command shell window to determine that path: it is the file system on which
/ is mounted.