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Number   :  232
Date     :  2001-06-18
Author   :  Shep Sweeney
Subject  :  Re: Re4:  restoring from full CD backup
Size(KB) :  2


Kan,
Thanks for your help. I now see how direct CD screws
up the SFNs and how one could run into problems. I
appreciate your help.
Shep
--- Kan Yabumoto  wrote:
> 
> Shep:
> 
> The SFN-preservation which made DATMAN famous is the
> issue for which DirectCD cannot preserve,
> unfortunately.
> You can see the SFN of those files you just
> mentioned using
> the DOS DIR command inside a DOS Box. Do the
> following:
> 
> 1. Open a DOS Box (Start > Run... > type
> command.com).
> 2. Inside the DOS box, type
> 
> DIR E:\yourdir\longfilename.doc
> 
> for the file name you observed earlier using
> Explorer.
> (assume E: is the DirectCD volume)
> 
> 3. Now, drag-and-drop the file to some directory
> inside
> the hard disk (say, C:\temp)
> 
> 4. Again, from the the DOS Box, view the file
> 
> DIR C:\temp\longfilename.doc
> 
> ---------------
> 
> The DIR command will show the SFN to your left and
> the
> LFN to the right. While the LFN are the same, of
> course
> (yes, DirectCD preserves LFN alright as long as the
> name
> is shorter than 64 characters), the SFN for the one
> in the DirectCD shows a funny name such as
> LONG#A42.DOC
> whereas its copy you just made in c:\temp will have
> a
> different one such as LONGNA~1.DOC.
> 
> The xxxxxx~1.xxx format is the standard format for
> the
> SFN for Win9x (and most NT/2K) files. The trouble is
> DirectCD has its own way of assigning the SFN.
> 
> When you perform drag and drop, even Explorer does
> not
> do it right. If you have too similar longnames
> which
> shares the same first 6 characters, the order of the
> copying (do one at a time) will make the numeric
> tail
> value to be different and this subtle difference is
> enough to cause problems for certain key system
> files.
> 
> You can find our more details in
> 
> http://www.xxcopy.com/xxcopy/xxcopy03.htm
> 
> 
> Kan Yabumoto
>
========================================================
> At 2001-06-17 15:49, Shep Sweeney wrote:
> >Dan,
> >After reading the responses from various members of
> >the
> >group, I inserted my CD mirror image of the Windows
> >Directory in my CDrom, and went to Explorer and
> then
> >toggled down to the G Drive (my CDrom drive) and
> >clicked on it. Windows Directory opened and showed
> >all its sub directories. I moved my mouse over the
> >Windows\Catroot Subdirectory(Whatever that is) and
> it
> >showed me 3 subdirectories under Catroot each of
> which
> >had a long file name(at least 36 digets). Does this
> >not indicate that my CD image contains long file
> >names?
> > Thanks, Shep
> 
> 


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