Before you perform an in-place upgrade
• Before you follow the steps later in this article, click the following article number to view the article in the Microsoft Knowledge Base if your computer came preinstalled with Windows XP:
312369 (
http://support.microsoft.com/kb/312369/) You may lose data or program settings after reinstalling, repairing, or upgrading Windows XP
• If you perform an in-place upgrade of Windows XP, all existing restore points are removed and a new system checkpoint restore point is created after the in-place upgrade is completed. Do not perform an in-place upgrade if you may have to use System Restore to restore your computer to a previous state.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
301224 (
http://support.microsoft.com/kb/301224/) System Restore 'restore points' are missing or deleted
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Backup copies of your
registry files (in the %systemroot%\Repair folder) are also replaced after the in-place upgrade is completed. The registry files in the Repair folder are either from the first time that you started Windows XP or the last time that you used the Backup utility to back up your System State. Copy these registry backups to another location before you perform an in-place upgrade if you may have to use them after the in-place upgrade is completed.
• Do not perform a repair or in-place upgrade to repair a component or program that is not currently installed. If you can, use the Add or Remove Programs tool in Control Panel, or reinstall the component or program instead of Windows.
• If your computer requires a third-party mass storage device driver or HAL, make sure that you have a copy of the files on a floppy disk before you perform a repair or in-place upgrade.
• Do not use a repair or in-place upgrade to try to resolve a problem with a user account, password, or local profile. To determine if the problem is related to a user account, password, or local profile, create another user account (if you can), and then log on to that account to see if the problem is resolved.
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Do not use a repair or in-place upgrade to resolve a problem with third-party programs, files or registry entries.
• Do not use a repair or in-place upgrade if you suspect disk problems.
• Do not use a repair or in-place upgrade if you suspect a problem with a third-party device, and the latest device drivers are currently installed for the device.