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BUG: Mounts to root directories causes setup.exe to crash


The cygwin installer, setup.exe, crashes when trying to install files to 
a directory which has been mounted to the root directory of a drive.

Setup.exe must of course look at the mounts recorded in the registry to 
install files in the correct places. However, when you mount a cygwin 
directory, such as /etc, on the root directory of a partition, like e:\, 
regardless of whether it's done with the command "mount e:\\ /etc", "mount 
e:/ /etc" or "mount e: /etc", only the drive letter and the colon (e:) is 
recorded in the registry. This causes setup.exe to crash when it tries to 
copy files (e.g. to /etc/postinstall). Manually editing the registry, 
adding a backslash after the colon, solves the problem.

I suggest that setup.exe assume that <driveletter>: means <driveletter>:\ 
in the registry (HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2 
and possibly HKEY_CURRENT_USER\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2).

Setup.exe demands that the cygwin root directory, which is asked for on its 
third screen, is absolute, i.e. begins with <driveletter>:\, so that's not a

Magnus Holmgren

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