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Is it safe to delete W98UNDO.DAT and W98UNDO.INI ?

I used to have Windows 98 in my laptop.
Then I installed (clean install) Windows 2000.
Just recently I discovered that I have 2 files:

W98UNDO.DAT 117,459 KB
W98UNDO.INI     357 KB

in my C:\ folder.
Is it safe to delete that 2 files? cause I run out of free space.
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andichan2001
Asked:
andichan2001
1 Solution
 
CrazyOneCommented:
Yes you can if you don't intend on uninstalling Win2000 to revert back to Win98.


The Crazy One
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war1Commented:
Greetings, andichan2001!
   If you don't want to ever go back to Windows 98, then you can delete these files.

Best wishes, war1
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CrazyOneCommented:
The "Save System Files" Dialog Box May Not Be Displayed
http://support.microsoft.com/default.aspx?scid=KB;en-us;q232614

If you want to be able to uninstall Windows at a later time, you must save the system files. When you upgrade over Windows, you are prompted during Setup to save system files. Before a new uninstall set is created, a backup copy is created. The uninstall set consists of the following files:

Windows 98:
Winundo.dat
Winundo.ini
Winlfn.ini

Windows 98 Second Edition:
W98undo.dat
W98undo.ini
Winlfn.ini

Windows Millennium Edition:
W9xundo.dat
W9xundo.ini
Winlfn.ini
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jongalliCommented:
Yes you can if you don't intend on uninstalling Win2000 to revert back to Win98.
Even if you do revert back to windows 98 i would recommend a clean install of windows 98 as uninstalling often causes problems
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andichan2001Author Commented:
CrazyOne,
My old OS is Windows 98 Second Edition,
I got W98undo.dat and W98undo.ini in c:\
but I can't find Winlfn.ini
is it normal?

SunBow said that "Win2K does not have an 'uninstall' or a go-back feature." ? ( http://www.experts-exchange.com/Operating_Systems/Q_20135156.html )

How can someone go back to previous Windows from Win2k (I don't intend to, just curious).

By the way my c: drive is now NTFS. I read somewhere that NTFS disk can't be converted to FAT32 without deleting all data. So in my case, it is impossible to go back to Windows 98, right?
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CrazyOneCommented:
>>>but I can't find Winlfn.ini
is it normal?

Hmmm I really don't know

>>>Sun said that "Win2K does not have an 'un' or a go-back feature."

Look in Control Panel > Add/Remove Programs and See if Win2000 is listed as a Uninstall. If it is then Win2000 has set itself up to be able to revert back to the prior OS. As for aa the go-back feature this probably is referring to System Restore which ME and XP have but Win2000 does not.

>>>I read somewhere that NTFS disk can't be converted to FAT32 without deleting all data.

Ummm there are no tools built into Windows the can do this. But it can be done with third party Products like Partition Magic and BootIT etc. So in this case one could assume that going back to Windows 98 is not an option without getting and using a third party utility.
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bobinclt13Commented:
ofcourse u can because it is the unninstalation file
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andichan2001Author Commented:
I look in Control Panel > Add/Remove Programs and Win2000 is not even listed there. It makes me wonder where the 2 files come from...
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