Get out of the misunderstanding and debunk the classic Windows XP rumors

Online and a lot of magazines circulated a lot about Windows XP optimization, Introduction, skills and so on, many are regarded as "classic", "Bible", in fact, when we carefully identify these so-called "ultimate skills", we will find that many of them are irresponsible. These things have largely misled Windows XP users and even brought them irreparable damage. "Practice is the only criterion for testing truth!" "Today, let us uncover the mysteries of these rumors and tell you what is the real solution."

A classic myth: Forget the password after the "brilliant idea"

Classic degree: ★★★★

Degree of danger: ★★★★★

1. Description of the wrong method of resolution

When you are using Windows XP, accidentally forgot the administrator password, how to do? There is a popular way to use the DOS boot disk (if Windows XP partition is an NTFS partition, you need to support NTFS DOS boot disk) into DOS real mode, will%systemroot%\system32\ A file named Sam in the Config directory is deleted. Reboot the system, the administrator's login password is already empty, we can easily log on to the system.

Small knowledge: The management of user accounts in Windows NT/2000/XP uses the Security Account Manager (ACCOUNTMANAGER,SAM) mechanism, which manages the account not by directly confirming the user name and password, but by security identification ( SID). The SID number is created at the same time as the account is created, and the SID is deleted as soon as the account is deleted. The SID information for the system is stored in the%systemroot%\system32\config\sam file in the form of "Sid s-1-5-21-xxxxxxxxxxxxxx-xxxxxxxxxxxxxx-005."

2. Origin and consequences of the programme

This error comes from a previous approach to Windows 2000 forgotten passwords, and Windows 2000, which does not have a service Pack installed, can successfully crack the login password if the user forgets the administrator password. The theory of the scheme is that the Windows xp password is stored in the SAM file, when we log on to the system, the system will automatically verify the SAM database information, such as the discovery of this password and user name and Sam file in the encrypted data to match, the system will log on smoothly. Conversely, you cannot log on. If you delete the file, the SAM database will be emptied and the administrator's login password will be emptied, which will naturally escape the Windows XP logon password verification mechanism.

In fact, this method for Windows XP SP1-SP4 has been invalid, is not useful for Windows xp-based, if you follow the scheme to operate on Windows XP, there will be a failure to start the situation, to our operation caused greater trouble.

3. The right Solution:

When the Windows XP login password is lost, we can use different methods to solve the different situations:

(1) If you install Windows XP, the administrator password is set to null. Everyone can enter the Safe mode by F8 when the system is booted, the administrator password here is empty, can enter directly, after entering the account and password to set up.

(2) If the administrator password is set, the solution is not so simple, we can use the Super Windows 2000/XP System Maintenance CD--ERD Commander 2003. After using the CD to start the system, run the "start → admin → tools → password modifications" command to open the "ERD Commander 2003 Locksmith Wizard" window, in the "Account" box, enter the name of the account to be cracked, and then enter a new password on the OK.

Small tip:

★erd commander for Shareware, its official homepage is: Www.winternals.com/,ERD Commander 2003 Chinese version of the ISO file download address: soft.0zones.com/softdown.asp?id= 21081, the market can buy the integration of the ERD Commander Boot CD.