Vista: mount/umount -s permission denied

[Dick Repasky]

On Thu, 23 Aug 2007, Corinna Vinschen wrote:

> On Aug 23 13:18, Larry Hall (Cygwin) wrote:
>> Dick Repasky wrote:
>>>
>>> On Windows Vista Enterprise, I consistently receive "permission denied"
>>> errors when using cygwin mount/umount commands on system mounts
>>> (mount/umount -s ...).  I cannot mount novel system mount points (e.g.,
>>> mount -s -b C:\\bonga /usr/local) or unmount existing system mount
>>> points (e.g., umount -s /usr/lib). The same is true from the cygwin bash
>>> prompt, from within a cygwin bash script, from the windows command
>>> prompt (C:\cygwin\bin\mount -s ...) or from within a windows .bat file.
>>>
>>> The system is a single-user system, and my identity is that under which
>>> setup.exe was run to install cygwin.
>>>
>>> I have not had this issue with cygwin under XP.
>>>
>>> User mounts (mount/umount -u) work just fine for me on Vista.
>>>
>>> Are system mounts supposed to be unmutable?  If so, oh.  If not, is
>>> there a work-around, or what have I done wrongly?
>
> You forgot UAC.  Welcome to the wonderful world of strange Vista
> concepts.
>
>> Try turning off UAC.  Otherwise, give your user the ability to add/remove/
>> update all registry entries.
>
> Erm... turning off UAC will certainly help, but it's not necessary.  And
> administrative users *have* all rights to change the HKEY_LOCAL_MACHINE
> branch of the registry, it's just one of the rights removed when working
> under UAC control.
>
> The most simple way to get the right to mount/umount is to start the
> process with admin rights.  On the Cygwin shell icon, right click to get
> the context menu and choose "Run as administrator" or your local
> equivalent menu entry.  Now you started the shell with all administrative
> permissions and you can mount/umount.
>
>
> Corinna
>

Wow, thanks.  You know, this might make a good FAQ entry.

Dick


Dick Repasky
Center for Computational Cytomics
UITS Cubicle 101.08
Indiana University
USA

rrepasky@indiana.edu

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