In-situ upgrade case analysis of Windows XP

Computer store news Windows XP's in-place upgrade use is more troublesome than Windows 98's overlay installation. Let's take a look at the specific operation method through an example. Symptom: A rookie friend called and said that the Windows XP system could not be started. He rushed to find that he automatically restarted every time he started the scroll bar interface. Asked for details, it was installed and uninstalled many software yesterday. No reboot. This phenomenon has appeared on the boot today. The inference may be due to the destruction of the system when installing and uninstalling the software. The last time the correct configuration failed to start properly, the safe mode could not be entered. It seems that only the system is reinstalled. However, my friend said that important data in the system partition has not been backed up, so I tried the in-place upgrade and solved the problem very smoothly. Specific steps: First use the Windows XP installation CD to start the computer, press the “Enter” key to start installing Windows XP, and then press F8 to accept the installation agreement. At this time, the installer will detect that Windows XP is installed in the system and give When prompted, press the R button to select the repair installation, and the rest of the steps are exactly the same as the normal installation of Windows XP. However, please note that after you upgrade your Windows XP with an in-place upgrade, you need to reactivate Windows XP. If you have a dual system installed on your computer, you can also upgrade Windows XP in-place on other operating systems that work properly by inserting the Windows XP CD-ROM into your CD-ROM drive. "Welcome to the Windows Installer" In the interface, click the “Install Type” box to select the “Upgrade (Recommended)” option, and then click the “Next” button to continue the normal installation. In-situ upgrade is not “all-in-one”, it has suitable applications, in addition to the examples we have seen above, if you encounter the following problems, you can also solve them by in-place upgrade: Mode to start Windows XP issue. Caused by a recently installed system update (Windows Update, hotfix, Windows XP Service Pack, or Microsoft Internet Explorer update), and cannot be resolved in any other way. The most typical case is that some users have used the cracked version of Windows XP and cannot be used after automatic update. Registry issues that cannot be resolved by using other tools (such as “system restore”). Some properties of the system file change, and we want to restore to the initial state, you need to apply the default (file and registry) permissions to the installed Windows XP system. You need to use the Windows installer to find the Plug and Play device again. Precautions for in-situ upgrade installation: Windows XP's in-place installation does not cover it like Windows 98. It will make a lot of changes to the system, so before using in-situ installation, we must first determine whether it should be used. Bit installation. 1. In-situ upgrade requires the use of Windows XP version that is consistent with the original installation system. For example, it is a professional version. You must use the professional version of Windows XP for in-place upgrade. If it is a home version, you cannot use the professional version to perform the original. Bit upgrade installation. 2. After repairing Windows XP with in-place upgrade installation, although the application software does not need to be reinstalled, many system settings are restored to the default state, such as automatically opening the system restore, the login interface is also changed to the system default, you need Re-personalize. 3. After the in-place upgrade installation, all patches that are made with Windows Update will be lost, so you need to re-update online. 4. If your computer also has Windows 2003 installed, after using Windows XP to repair Windows XP, Windows 2003 will not be able to enter. The repair method is to use the Windows 2003 installation CD-ROM i386 directory under “ntldr” and “Ntdetect .com” Copy the file to C: to overwrite the original file. 5. After using Windows XP to repair Windows XP, if you find that the system running speed is obviously slow, you can check in the device manager whether the operating mode of the hard disk and CD-ROM drive is set to "PIO" mode, if so, then Need to extract the "Atapi.sys" file in Windows XP SP2 Beta (version number 5.1.2600.2055), replace the original file in the system, and open the registry editor, find [HKEY_LOCAL_MACHINE SYSTEMCurrentControlSetControlClass{4D36E96A-E325 -11CE-BFC1-08002BE10318}001], create a new DWORD type key value “ ResetErrorCountersOnSuccess”, set its value to “l”. Then modify the key value setting under the [HKEY_LOCAL_MACHINESYSTEM CurrentControlSetControlClass{4D36E96A-E325-11CE-BFC1-08002BE10318}002] primary key in the same way. 6. If your Windows XP is pre-installed on the branded machine and there is a "Undo_guimode.txt" file in the WindowsSystem32 folder, you may get lost start menu shortcuts, startup group data, and when using the in-place upgrade installation. To share the problem of document data, you need to delete the "Undo_guimode.txt" file before performing the in-place upgrade to avoid data loss.