Multi-system: Implementing a single system uninstallation Raiders

In order to take care of the different environments in which some software runs, people are now used to installing dual operating systems or more operating systems for their love machines. With the increase in the frequency of use of computers and the existence of various vulnerabilities, Microsoft's Windows system provides us with an easy-to-use graphical interface, and errors continue to appear, such as blue screens, crashes, system crashes, and so on. Due to the complexity of multiple systems, the problems of multiple systems are far more difficult to solve than typical single-machine faults. As a result, we have been reinstalling the operating system many times while also constantly uninstalling the system.

It is relatively simple to uninstall and install Windows under single system and upgrade system, but it is relatively complicated to delete in a system under multiple systems. Below I mainly discuss several of the most common multi-system combinations, and discuss how to implement a single system uninstallation in multiple systems, and hope to help those who are troubled by this related problem. Of course, before performing the uninstall operation, you must ensure that the data is secure. To guard against unnecessary losses, you must make a backup of important files before the operation.

First, uninstall Windows upgrade components in Win9x or WinMe upgrade system

In early days, computers generally used Win9x or WinMe as the system, and with Win9x/ME different versions at different times. The emergence of most users in the process of using Win9x/ME from time to time to upgrade the system. In fact, this kind of upgrade is also possible to carry out a secure anti-installation and restore to the previous old version of the system. But there is a premise that the previous version of the file was backed up during the upgrade process. Because during the installation process of the upgrade system, the program will prompt you to back up the previous system. If you want to go back to the previous system, it is recommended that you choose the backup, otherwise it will be difficult to restore to the previous system.

1. Uninstall Win9x Upgrade Program

In Win9x, click “Start”,“Set>,“Control Panel“, double-click in the Control Panel window ;Add/Remove Programs>, click the “Install/Uninstall" tab. In the installer list, find the "Uninstall Windows98" option and select, then click the "Add/Remove" button, the system will pop up a prompt query dialog box asking if the user really needs to uninstall Windows98, click “ is ” After the button is determined, the system will start the uninstallation work. Finally, restart the computer as prompted, and the system will revert to the state of the previous system.

2. Uninstall WinME Upgrade Program

The uninstall operation in WinMe is similar to that in Win9x. One difference is that there are two options in the installer list, "Uninstall Windows Millennium" and "Delete Windows Millennium Uninstall Information", here you only need to delete the previous item to complete the uninstallation of WinMe upgrade program. .

Second, uninstall Win2000 in Win98/Me and Win2000 dual system

It is easier to uninstall Win2000 in Wn98/Me and Win2000 dual systems, which can be completed in pure DOS mode. Uninstall method: First use a Win98/Me system boot disk to start the computer, and then execute the following commands in order:

fdisk/mbr : Rewrite the main boot area of ​​the hard disk.

sys C: Transfer Win98 system files.

deltree C: INNT Delete the Win2000 system file storage directory.

deltree C:oot*.* Delete all files starting with boot. Here are the files for the multi-system boot menu.

deltree C: *.*? Delete all files starting with nt.

deltree C: iberfil.sys Delete system settings to save files.

deltree C:agefile.sys deletes the page file.

After the above operation, you can delete Win2000.

Run sys c: in a system-initiated DOS environment and restart. After entering the system, in the Windows state, the boot.ini, BOOTFONT.BIN, BOOTLOG.PRV, bootsect.bak, bootsect.dos, NETLOG.TXT, NTDETECT.COM, NTLDR, NULL and other files in the root directory of the C drive are all. delete. Then delete the WINNT and Program Files directories in the Win2000 installation drive. Finally restart the computer and also uninstall Win2000.

Third, uninstall Win98/Me in Win98/Me and Win2000/XP

to uninstall Win98 in Win98 and Win2000 dual system as an example to illustrate the uninstall process. After determining to uninstall Win98, first modify the order of the dual system boot selection menu, and change the default startup to Win2000 instead of Win98. Modification method: Start the computer, when the dual system selection menu appears, choose to enter the Win2000 system. Right-click "My Computer" under Win2000 and select the "Properties" command from the pop-up menu to enter the System Properties Settings window.

Select the "Advanced" tab in the "System Properties" dialog box, and then click the "Settings" button under "Startup and Recovery" under "Startup and Recovery" to enter "Start" And the failure recovery & rdquo; property settings dialog.

In the "Startup and Recovery" property setting dialog box, under "System startup", modify the default startup system, here changed to Win2000, and you can also modify the startup time. Because it is a single system after modification, in order to reduce the waiting time, you can change the startup time to 0, so that the startup menu option will not appear at startup, but directly start Win2000.

Then delete the system file directory where Win9x is located, mainly including Windows and Program Files. If you previously installed Win9x and Win2000 on the same partition, just delete the Windows directory, because in this case the Program Files directory is common in Win2000 and Win9x. Then delete and delete the Win9x boot files, including io.sys, msdos.sys, command.com, autoexec.bat, and config.sys.

After completing the above operations, the Win2000 single system is restored.

In addition, this method is also effective in uninstalling Win98 or WinMe in a dual system consisting of Win98/Me and WinXP.

Fourth, uninstall WinXP in Win98/XP dual system

Win98/XP dual system, there are many ways to complete XP uninstall, the following two most common.

The first method: use the "Change /Delete" command option in the WinXP installer to complete the uninstall.

First prepare a Win98 system boot disk, if not, you can create it through the "Add/Remove Programs" service in Win98's "Control Panel". Restart the computer and select WinXP to enter when the dual system boot selection menu appears.

Click “Start”,“Set”,“Control Panel” to open the Control Panel. Double-click the “Add/Remove Programs” icon in the Control Panel. In the list of programs, select the "Windows XP" option and click the "Change/Remove" command button below. In the pop-up "Change/Delete" dialog box, select the "Uninstall Windows XP" command to complete the uninstallation of WinXP. During the uninstall process, some warnings such as warnings will pop up. At this point, we click the “Continue” command. In the next prompt warning message box, click the “Yes” command to confirm. The system then begins to automatically uninstall the program.

After the program is uninstalled, the computer automatically restarts. Now the system has not completed the entire uninstall process, and the system's boot area has to be rewritten. Start the computer with the Win98 boot disk ready to start, and type "fdisk/mbr" in the command line state to rewrite the hard disk master boot record.

The second method: direct deletion method.

First enter the WinXP operating system in the normal way, click “Start”,“Set>,“Control Panel”, open the Control Panel, double-click in the Control Panel “System” Icon, go to the “System Properties” window, select the “Advanced” tab in the “System Properties” dialog box, and then click the “Settings” setting under “Startup and Recovery” under the “Startup and Recovery” section below. Button, enter the "Startup and Recovery" property settings window.

Here you can modify the default operating system when the computer starts, and the waiting time for displaying the boot menu. The first step to do here is to set the default operating system to Win98, then remove the small tick before the "show operating system list time", or set the display time of the selection menu to “0” Increase the speed of startup.

Then, restart the computer, and the boot selection menu will not appear directly into the Win98 system. Then delete the WinXP file. The main objects to be deleted here are the WinXP installation directory "X:Windows" and the page file "X:pagefile.sys". In addition, you must delete several system files of WinXP in the root directory of the system C, such as boot.ini, bootsect.dos, bootfont.bin, ntdetect.com, ntldr.ini, hiberfil.sys, etc., you can also delete.

Need to pay attention to the problem:

If you use NTFS file system when installing WinXP, you can first back up the important files in the partition to other partitions, and then re-enter the WinXP installation program. In the "Select partition and partition format" step, choose to delete the NTFS partition and then exit the installer. Boot the computer with the Windows 98 boot disk and re-create the FAT32 partition with Fdisk. Or you can use other hard disk tool software (such as: PQMagic, etc.) to directly delete this NTFS partition and rebuild the FAT32 partition.

Well, in the future, when you come across a system that uninstalls a system in a dual system, you don't have to worry anymore.