Re: sp2 to sp1

From: Steve N. (
Date: 05/29/05

Date: Sun, 29 May 2005 19:39:21 GMT

Torgeir Bakken (MVP) wrote:

> Carey Frisch [MVP] wrote:
>> If you attempt to perform a Repair Install using a Windows XP SP1
>> CD, you will get an error message that the SP2 files cannot be
>> removed and the Repair Install will fail and subsequently abort.
> Hi,
> No, you will not...
> I have just tested this:
> Clean install using a WinXP CD with SP2 slipstreamed. Now I have a
> WinXP SP2 installation where the $NtServicePackUninstall$ and
> ServicePackFiles folder does NOT exist. Winver.exe reports that
> Service Pack 2 is installed.
> Then I use a WinXP CD with SP1 slipstreamed and do a repair install
> following the instructions in step 1 to 6 that is listed here:
> I get no error messages about incompatible service pack levels or
> files, everything goes smoothly.
> After the repair install is finished and the computer reboots, I have
> Windows XP with Service Pack 1 installed. Winver.exe reports that
> Service Pack 1 is installed, and e.g. the Security Center is gone.
> Conclusion:
> With a repair install, you can remove SP2 for WinXP even when SP2 was
> slipstreamed into the OS install media, or if you have deleted the
> $NtServicePackUninstall$ folder.

And I can attest that a clean install from an OEM Win XP Pro Sp2 CD (not
slipstreamed) can be taken back to SP1 with a repair install from an XP

Carey is full of it, as is nearly usual. He never tests anything for

Thanks again, Torgeir.