Indeed Cygwin thinks that because the name has a colon it's a win32 path.
In mount_info::conv_to_win32_path /* An MS-DOS spec has either a : or a \. If this is found, short circuit most of the rest of this function. */ if (strpbrk (src_path, ":\\") != NULL || slash_unc_prefix_p (src_path)) Maybe I'll have to use something that's not a colon. But I did find a way to clean up the mess. If mount looks like this $ mount C:\cygwin\bin on /usr/bin type system (binmode) C:\cygwin\lib on /usr/lib type system (binmode) C:\cygwin on / type system (binmode) c: on /blah:a type user (textmode) $umount c: seems to clean it up. $ mount C:\cygwin\bin on /usr/bin type system (binmode) C:\cygwin\lib on /usr/lib type system (binmode) C:\cygwin on / type system (binmode) c: on /cygdrive/c type user (binmode,noumount) But maybe the correct test for Win32ness is if it's a letter followed by a colon. Or if the colon is the 2nd letter in the name. That way colons can be used later. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/