. Before reinstalling the system, various documents, software and desktop settings can be backed up relatively simply. But do you know how to back up your password? When backing up the system for others, how can I back up the password for the other party without knowing the login password of the other system, and transplant it to the new machine? Windows 98
Principle: When Windows 98 logs in, the way to verify the password is to verify the "username.PWL" file in the Windows directory. If the user name and password are found after the proofreading, the user name and password are all used. The name.PWL" file matches, and the login will be successful. On the contrary, it will not be able to log in. After understanding the principle of Windows 98 login, you can "medicine" under the "username.PWL" file! Backup: Create a new Notepad file, enter the following, and save it as BACKUP.BAT. @echo Bakup passWord..... @echo off md D:\\pwbak copy c:\\Windows\\*.pwl D:\\pwbak @echo Bakup passWord Successfully! pause (Note: "c:\\" is the location of the system disk , "D:\\pwbak" is the location where the password should be saved, you can change it as needed, the same below) After the file is created, you can complete the backup of all user passwords by running it under Windows or DOS. Recovery: After reinstalling the operating system and creating a new user with the same username as the original system (the new username should be exactly the same as in the original system, otherwise the recovery is invalid), you can start to restore the system login password. It is. Create a new Notepad file, enter the following, and save it as RESTONE.BAT. @echo Restone passWord..... @echo off @echo y|
Copy D:\\pwbak\\*.pwl c:\\Windows @echo Restone passWord Successfully! After the pause file is created, just run it in Windwos or DOS to complete the recovery of all user passwords. Windows 2000/XP/Server 2003
Method 1: Step 1: Enter the "at time /interactive regedit.exe" command at the command prompt to add a scheduled task. Use the at command to run the Registry Editor program with system privileges. Tips
"time" specifies the time to run the command, as long as it is 1 to 2 minutes away from the current time. For example: the current time is 13:43 and the command is "at 13:45 /interactive regedit.exe". "/interactive" allows the job to interact with the user's desktop that was logged in at runtime. Step 2: Open the Registry Editor and find [HKEY_LOCAL_ MacHINE\\SAM\\SAM], which is now accessible (see figure). You can export the contents of the SAM file by right-clicking the SAM subkey and selecting "Export" or clicking the menu "File → Export". Close the Registry Editor. Tip
If you want to export the user password of an account in the "Registry Editor", in case you need it, open [HKEY_LOCAL_MacHINE \\SAM\\SAM\\Domains\\Account\\Users\\Names] and click the item. Under the specific username, click "Export". Check the default value of the right pane, such as "Administrator" is "0x1f4". Then click the specific value under "Users", such as "000001F4", click "Export". Important warning: You cannot delete the key value arbitrarily, otherwise a fatal error may occur! Step 3: When needed, double-click the exported REG file and import the registry file to restore the user password during export or to a new computer. Method 2: Step 1: Download the psu.exe tool (download address: http://www.newhua.com/cfan/200502/psu.rar) and save it to the "C:\\WINNT\\system32" folder. Step 2: Open the "Command Line Prompt" window and enter the "psu -p regedit.exe -i winlogon_pid" command to open the "Registry Editor". The winlogon_pid value is the PID number of the winlogon.exe process. Right click on the desktop taskbar, select "Task Manager", or press Ctrl+Alt+Del to open "Windows Task Manager", click the "Process" tab, you can view the PID value of winlogon.exe. For example, the PID value of the Windows XP winlogon.exe is 824, that is, enter the "psu -p regedit.exe -i 824" command. Tip If you cannot see the PID value of the process in the Windows Task Manager, click View → Select Columns, then select the PID (Process Identifier) check box and click OK. The third step: open the "Registry Editor", press F5 to refresh, the [HKEY_LOCAL_MacHINE\\SAM\\SAM] branch can be accessed. Then follow the second and third steps of "Method 1".