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From:	"Matt D." <matt AT codespunk DOT com>
X-Google-Original-From:	"Matt D." <codespunk+cygwin AT gmail DOT com>
Reply-To:	codespunk+cygwin AT gmail DOT com
To:	cygwin AT cygwin DOT com
Subject:	Cannot access volumes mounted with 'mklink /d' which point to a volume UUID
Message-ID:	<58A4741E.5020408@gmail.com>
Date:	Wed, 15 Feb 2017 07:30:38 -0800
User-Agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0
MIME-Version:	1.0

On Windows you can create symbolic links which point to volume UUIDs as 
a way of mounting and unmounting them without having to use the 
administrative disk management tools.

For example, in cmd:

mountvol
...
     \\?\Volume{079b79c9-0000-0000-0000-100000000000}\
         C:\
...
mklink /d test \\?\Volume{079b79c9-0000-0000-0000-100000000000}\
...
dir test

I call mounvol to get a list of volumes and create a symbolic link 
'test' which points to the C:\ UUID. When I then 'dir test' it will list 
all files on that volume.

If I try to access it through Cygwin Bash I get the following error:

$ dir test/
dir: cannot access 'test/': No such file or directory

This makes it difficult to work with unmounted volumes as it's not 
always possible to access the administrative disk management snap-in and 
the mountvol/mklink has always been my go-to for this type of 
functionality. It would be great if Cygwin would support it.


Matt D.

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