Can't install SP2

Once you upgrade XP Home to XP Pro, you cannot
revert back to XP Home unless you perform a "Clean
Install" of XP Home. Therefore, backup your important
files before proceeding:

The Windows XP CD is bootable and contains all the tools necessary
to partition and format your drive. Follow this procedure and allow
Windows XP to partition and format your drive:

NOTE: It would be best to physically disconnect all your peripheral hardware
devices, except the monitor, mouse and keyboard, before installing XP.

NOTE: If you have an internal Zip Drive installed, physically disconnect the
EIDE and power cable to it before proceeding, otherwise your main
hard drive may not be assigned the customary C: drive letter.
After installing Windows XP, you may then reconnect it.

1. Open your BIOS and set your "CD Drive as the first bootable device".

===> Accessing Motherboard BIOS
===> http://www.michaelstevenstech.com/bios_manufacturer.htm

2. Insert your Windows XP CD in the CD Drive and reboot your computer.
3. You'll see a message to boot to the CD....follow the instructions.
4. The setup menu will appear and you should elect to delete all the existing
Windows partitions, then create a new partition, then format the primary
partition (preferably NTFS) and proceed to install Windows XP.

5. Clean Install Windows XP
http://michaelstevenstech.com/cleanxpinstall.html

[Courtesy of Michael Stevens, MS-MVP]

6. ==> Immediately after installing Windows XP, turn on XP's Firewall.
==> http://www.microsoft.com/athome/security/protect/default.aspx

7. After Windows XP is installed, visit the Windows Update website
and download the available "Critical Updates".

8. After installing the critical updates, be sure and visit the support website
of the manufacturer of the computer to download and install any
available Windows XP compatible drivers, such as video adapter
and audio drivers.

9. If you happen to run into any installation difficulties, use the following resources:

How to Troubleshoot Windows XP Problems During Installation
http://support.microsoft.com/default.aspx?scid=kb;EN-US;310064

Troubleshooting Windows XP Setup
http://www.kellys-korner-xp.com/xp_setup.htm

[Courtesy of MS-MVP Kelly Theriot]

Note:

There are three ways to report software piracy:

Method 1: Email piracy DeleteThis @microsoft.com

Method 2: Call the Microsoft Anti-Piracy Hotline at
(800) RU-LEGIT.

Method 3: Go to the following web page to fill out an online reporting form:
http://www.microsoft.com/piracy/ReportingUs.mspx

--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User

Be Smart! Protect Your PC!
http://www.microsoft.com/athome/security/protect/default.aspx

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"Mel Barton" wrote:

| Recently I purchased XP Pro from a discount source and installed it over XP
| Home. Now when I try to install SP2, I am informed that it is an
| unauthorized program and I cannot install SP2. Can I uninstall the XP Pro
| and keep the authorized XP Home?