1.7.9(0.237/5/3): not seeing some Windows files
Fri Sep 16 14:05:00 GMT 2011
On 09/15/2011 11:02 PM, Robert Perlberg wrote:
> Very interesting. Thank you for that information. My goal here is to
> run ntbackup via ssh. Based on this information I copied ntbackup.exe
> to another folder that does not get redirected and I can invoke it from
> there via ssh. It seems to run fine, so I question why Microsoft chose
> to make it inaccessible to 32 bit apps. My concern is that now I have
> to keep track of when ntbackup.exe gets updated and update the copy.
Have a look at the File System Redirector article at
In short, for 32-bit processes running under WOW64, %windir%\System32 is
redirected to %windir%\SysWOW64, so "old" 32-bit processes continue to
see a 32-bit environment. Starting with *Vista*, they added
%windir%\Sysnative to point to the 64-bit %windir%\System32.
There's more to it, e.g. %windir%\regedit.exe also being redirected, so
make sure to read the article to avoid further surprises.
Problem reports: http://cygwin.com/problems.html
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