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This article mainly shows you "the last example analysis of the correct configuration of functions in XP", which is easy to understand and well-organized. I hope it can help you solve your doubts. Let the editor lead you to study and study the "sample analysis of the last correct configuration of features in XP".

But there are still many people who don't know about the "last correct configuration" feature and have never even used it. If you make changes to the system so that you cannot start, or if you want to undo the previous changes, you can use this feature, which will start the computer with the most recent valid settings.

The principle of the "Last correct configuration" feature:

Three control groups may be used in the Windows startup process: ControlSet001, ControlSet002, and CurrentControlSet, all of which have the same subitem structure. Generally use the settings in CurrentControlSet to boot the computer at startup. If it starts successfully once, it copies the data from CurrentControlSet and ControlSet001 to ControlSet002. During the operation of the system, if a new driver is installed or the configuration is changed, the changes are written to CurrentControlSet and ControlSet001. If there is a problem at the next startup, selecting "Last correct configuration" will command WindowsXP to use the data in ControlSet002, which represents the state of the system when it was last started correctly.

An extreme situation:

What if you have "configured correctly for the last time" and made configuration changes again, and the new changes still fail because WINXP has rolled back that stable, working control group (formerly known as "the last successful startup) one level back, resulting in a loss of correct configuration?" Don't worry, Windows XP has taken into account that when you boot the system with Last correct configuration, WINXP creates a new control group subitem, ControlSet003, in case you have to use it again.

Note: any changes made to other registry keys cannot be undone, for example, after installing SP1, you cannot use the Last correct configuration feature to undo Windows XP SP1 installation.

Use case description:

When a user downloads the latest printer driver and installs it, a "STOP.IRQL_NOT_LESS_OR_EQUAL" prompt appears when he restarts his computer in the afternoon and cannot boot to the desktop. This situation is generally caused by driver incompatibility, use the "Last correct configuration", restart the computer, and immediately appear the familiar XP desktop.

The above is all the contents of the article "the last example analysis of correctly configured features in XP". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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