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Windows Forum / Windows 95 / January 2004

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How to restore files from w95undo.dat?

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Brian - 20 Dec 2003 01:14 GMT
I have a w95undo.dat file, but lost the corresponding
w95undo.ini .  I really need to look at some of the files
backed up in w95undo.dat but iextract needs the .ini file.

How can I read/unpack the w95undo.dat file?  What format
is it in (cab, zip or some other special format)?

If the above is not possible, how can I create a
w95undo.ini file?  Could I perhaps get one from somewhere,
maybe from one of you - would this work?

Thanks in advance - I really need to do this.
Brian
philo - 21 Dec 2003 17:54 GMT
> I have a w95undo.dat file, but lost the corresponding
> w95undo.ini .  I really need to look at some of the files
[quoted text clipped - 9 lines]
> Thanks in advance - I really need to do this.
> Brian

If there is just *text* that you need to retrieve ...you could rename the
file to end with  .doc , then open in  wordpad...
Brian - 22 Dec 2003 21:17 GMT
Thank for your reply.  Yes, I only need text files, and
yes I've tried wordpad already.  But I can't really read
anything that way.  Most likely the problem is that
w95undo.dat is a compressed file.  So the key is how to
uncompress it?  Any ideas?

Brian
>-----Original Message-----
>
[quoted text clipped - 16 lines]
>
>.
Jeff Richards - 22 Dec 2003 21:23 GMT
What are you expecting to find in there?  The only text file information
that might be relevant is an INI file, and those problems are usually
fixable without resorting to backup.
--
Jeff Richards
MS MVP W95/W98

> Thank for your reply.  Yes, I only need text files, and
> yes I've tried wordpad already.  But I can't really read
[quoted text clipped - 27 lines]
> >
> >.
Brian - 22 Dec 2003 22:01 GMT
It is not a system problem that I have.  I don't
(necessarily) need to restore the old system.  I just need
to look at some files that w95undo.dat contains.  What's
the best way of doing that?

>-----Original Message-----
>What are you expecting to find in there?  The only text file information
[quoted text clipped - 37 lines]
>
>.
Jeff Richards - 22 Dec 2003 22:21 GMT
Are you aware that the undo file is not a disk backup - it simply contains
the operating system files that got replaced during the upgrade.  That's why
I can't think of any text files that could be in it that might be of
interest to you.

If this was my problem, I would image the hard disk, run the undo, look at
the file I wanted, and restore the disk.
--
Jeff Richards
MS MVP W95/W98

> It is not a system problem that I have.  I don't
> (necessarily) need to restore the old system.  I just need
> to look at some files that w95undo.dat contains.  What's
> the best way of doing that?
Brian - 24 Dec 2003 22:27 GMT
Thanks for all your replies.  Yes, I've tried to do that,
but like I said, I don't have the w95undo.ini file and
can't uninstall without it.  I have also tried to run
extract and iextract, but both need the .ini file.  

My guess is that w95undo.ini is only needed if one truly
wants to uninstall the old op.system, so the uninstall
program knows where to put each system file.  In my case,
I don't need to do that.  Is there any other software out
there that can read/decompress the w95undo.dat?

>-----Original Message-----
>Are you aware that the undo file is not a disk backup - it simply contains
[quoted text clipped - 14 lines]
>
>.
Jeff Richards - 24 Dec 2003 22:33 GMT
If your description of the function of the INI file is correct - and I don't
know whether it is or not - then any w95undo.INI file would serve your
purpose.
--
Jeff Richards
MS MVP W95/W98

> Thanks for all your replies.  Yes, I've tried to do that,
> but like I said, I don't have the w95undo.ini file and
[quoted text clipped - 6 lines]
> I don't need to do that.  Is there any other software out
> there that can read/decompress the w95undo.dat?
Brian - 08 Jan 2004 19:42 GMT
I was away for a couple of weeks.  
Yes, that's my guess too.  The iextract program looks for
w95undo.ini, and if it does not find it, it stops.  So
that's one of the things I asked for in my original email:
does anyone have a file like that I could use?  A VERY
clumsy alternative would be to install windows 3.1 and
then reinstall windows 95 by creating the .ini file.  I'm
really trying to avoid doing that.
Thanks,
Brian
>-----Original Message-----
>If your description of the function of the INI file is correct - and I don't
[quoted text clipped - 16 lines]
>
>.
Jeff Richards - 09 Jan 2004 01:18 GMT
Not only would that procedure provide you with the file you need, it is the
best way to ensure that the file is as similar as possible to the original.
If this was my problem I wouldn't hesitate to simply create the INI file as
you have described - the Win3.1 installation takes just a few minutes and
the upgrade is only slightly longer.
--
Jeff Richards
MS MVP W95/W98

> I was away for a couple of weeks.
> Yes, that's my guess too.  The iextract program looks for
[quoted text clipped - 6 lines]
> Thanks,
> Brian
Brian - 13 Jan 2004 23:11 GMT
Thanks again for your reply.  Now the obvious question is
where to get Win3.1 from?  I can try searching the web for
it, but if you have a link for it handy, please forward it
to me.  I will also need win95 for the subsequent upgrade.

>-----Original Message-----
>Not only would that procedure provide you with the file you need, it is the
[quoted text clipped - 18 lines]
>
>.
philo - 22 Dec 2003 23:20 GMT
> Thank for your reply.  Yes, I only need text files, and
> yes I've tried wordpad already.  But I can't really read
> anything that way.  Most likely the problem is that
> w95undo.dat is a compressed file.  So the key is how to
> uncompress it?  Any ideas?

I don't think it would be compressed...but I suspect it may be quite large
and
difficult to find any intelligence within it.

Instead of using wordpad...try using edit
as it has a search capability...if you know any of the text you are looking
for...
you can enter it into a search and possibly find it.
 
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