XP in-situ upgrade case analysis and installation considerations (1)

        Windows XP's in-place upgrade is more troublesome than Windows 98's overlay installation. Let's take a look at the specific operation method. 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" button to start installing Windows XP, then press F8 to accept the installation agreement, then the installation program will detect that Windows XP is installed in the system and give Prompt, then press the R button to select the repair installation, 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 dual-system installed on your computer, you can also upgrade Windows XP in-home under other normal operating systems by inserting the Windows XP CD-ROM into the CD-ROM drive, in the "Welcome to Windows Installer" interface. Click the "Installation Type" drop-down box to select the "Upgrade (Recommended)" option, and then click the "Next" button to continue the normal installation. In-place upgrade is not a cure-all, it has a suitable application, in addition to the examples we have seen above, if you encounter the following problems, you can also solve the problem by in-place upgrade: Can not start in safe mode 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-place upgrade needs

To use the 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, and if it is the home version, then You cannot use the Professional Edition for in-place 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 "ntldr" and "Ntdetect.com" in the i386 directory of the Windows 2003 installation CD. "Copy the file to C: and 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 whether the operating mode of the hard disk and CD-ROM drive is set to "PIO only" mode in Device Manager. If so, you need Extract the "Atapi.sys" file from Windows XP SP2 Beta (version number 5.1.2600.2055), replace the original file in the system, and open the registry editor to find [HKEY_LOCAL_MACHINE SYSTEMCurrentControlSetControlClass{4D36E96A-E325-11CE -BFC1-08002BE10318}001], create a new DWORD type key value "ResetErrorCountersOnSuccess" and 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 a branded machine and there is an "Undo_guimode.txt" file in the WindowsSystem32 folder, you may get lost start menu shortcuts, startup group data, and sharing when using the in-place upgrade installation. The problem with the document data, you need to delete the "Undo_guimode.txt" file before performing the in-place upgrade to avoid data loss.