Re: Copying NTFS Hard Links and Junctions to and from CD/DVD
From: Leonard Severt [MSFT] (leons_at_online.microsoft.com)
Date: 02/26/04
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Date: Thu, 26 Feb 2004 06:37:31 GMT
"Kevin Myers" <KevinMyers@austin.rr.com> wrote in
news:103n4r3tb73s1e4@corp.supernews.com:
> Hello,
>
> We have a very large set of directories and files on hard disk under
> Windows 2000 that we need to copy to CD or DVD. However, within this
> set of directories, NTFS hard links and junctions (reparse points) are
> used to provide alternate paths to the same files and folders
> (essentially supporting an object-relational navigation structure
> within the file system), and we need to duplicate those alternate
> paths on the CD or DVD.
>
> The CD/DVD burning applications that I have tried all appear oblivious
> to hard links and junctions, blindly following all paths through to
> their lowest levels, and creating multiple copies of my files as a
> result. That is unacceptable because the tremendous number of
> duplicate files that are produced *greatly* expands the volume of data
> that needs to be recorded, exceding the capacity of the media. Also,
> this situation makes it impossible to re-create the original structure
> when copying from the CD or DVD back to the hard drive.
>
> Whereever possible, normal Windows shortcuts are used for our
> application, and those don't cause any problems. However, shortcuts
> aren't an acceptable substitute in the situations where we use NTFS
> hard links and junctions. Among other reasons, Windows doesn't support
> searching through a shortcut to the linked file or folder, while this
> works fine with hard links and junctions, and that is a critical need
> for us.
>
> I know that the Rock Ridge extensions to the ISO9660 CD file system
> support both hard links and symbolic links. For our purposes, either
> one would be an acceptable substitute for the NTFS hard links and
> junctions that we are using, although hard links would be a more
> directly equivalent representation.
>
> 1. Does anyone know how it would be possible and what software could
> be used to replicate our file and directory structure onto CD or DVD,
> *including* actual hard links in the CD file system as substitutes for
> our NTFS hard links and junctions?
>
> 2. Conversely, if the desired file and directory structure including
> hard links can be created on CD/DVD, then does anyone know how it
> would be possible and what software would be required to replicate
> this structure back onto hard disk, substituting NTFS hard links and
> junctions where required?
>
> Thanks greatly in advance for any help.
>
> s/KAM
>
>
>
>
>
Problem is Rock Ridge is UNIX only. I don't know of anything for Windows
that supports junction points on CD/DVD. Since it would have to include
both file system extensions and burning support I doubt anyone has done
that on their own.
Joe had mentioned using a backup program. The only other type of program
I can think of is something like Winrar or Zip file. However I don't
know of any programs that support junction points but that should be
possible to do.
Leonard Severt
Windows 2000 Server Setup Team
-- This posting is provided "AS IS" with no warranties, and confers no rights.
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