Commonly used system fault recovery commands:
1. Bootcfg: used to configure and restore the startup file BOOT.INI (Win 2K does not have this command).
2. Disable and Enable: used to disable/enable system services or device drivers.
3. Expand: used to extract files from compressed files.
4. FixBoot: Rewrite the new partition boot area to the specified system partition.
5. FixMBR: Repair the master boot record of the startup disk.
6. Help: Display help.
7. Listsvc: List all system services and device drivers on the system (used with Disable/Enable).
8. Set: Display and set environment variables.
When a Windows 2000 or XP system fails, it can usually be repaired through "Last Known Good Configuration", "Safe Mode", and "System Restore" (only for XP). However, there are some situations that cannot be repaired through these methods, such as: system boot files are missing, BOOT.INI files are missing or misconfigured, system DLLs are missing, etc. At this time, although reinstalling the operating system is an effective method, it will take a long time. In fact, you can also make a final attempt by restoring the console. Using the recovery console, you can not only perform operations such as enabling and disabling system services, partitioning and formatting disks, repairing boot records, etc., but you can also repair errors such as missing system files by copying files from the source disc, etc.
It is very easy to install Windows 7 on XP! There should be no problem! One thing is that you must have XP before installing Windows 7. There will be two systems to choose from when you turn it on. You can use whichever one you like. Your current problem may be that you have turned off the dual boot setting!
1.[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)WINDOWS="Microsoft Windows XP Professional"/fastdetect
multi(0)disk(0)rdisk(0)partition(2)WINNT="Microsoft Windows 2000 Professional"/fastdetect
2. After booting into the system, right-click My Computer-Properties-Advanced-Startup and Recovery-Settings-Edit, and add at the end:
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Microsoft Windows XP
Professional" /noexecute=optin /fastdetect Then save and restart to try.
Starting from Windows Vista, the startup manager of the operating system is no longer the NTLDR boot.ini used in Windows 2000/XP/Server 2003, but uses a new startup configuration database storage (BCD). When installing an earlier version of Windows operating system on a Windows Vista-based computer, the installer will overwrite everything in the MBR, boot sector, and boot files. In this case, we can no longer use the boot from the earlier version of Windows operating system. .ini file to boot Windows Vista. Even if you open the boot.ini file in Notepad, you will only see the prompt message shown in Figure 1 (please pay attention to the red frame in the figure).
Figure 1 boot.ini file in the operating system
If the wrong facts have already been formed, we don’t have to worry at all. Here is an example of installing Windows Vista on the D drive and then formatting the C drive and reinstalling Windows XP due to some reasons. Follow the steps below to fix it manually:
Step 1: Restore MBR and restore boot manager
Use the Windows Vista installation CD to boot the computer, follow the order of selecting the installation language, time and currency format, keyboard and input method. After entering the installation program interface, select "Repair Computer" from the lower left corner, and then select "Repair Computer" on the next screen. Command Prompt" (see Figure 2), manually enter the following command in the command prompt environment and run: bootsect -nt60 all
Figure 2 Vista System Recovery Tool
Step 2: Rebuild BCD
Still execute the "bootrec /RebuildBcd" command in the command prompt environment. This command will scan all disks for Windows Vista-compatible installations and re-add them to the newly generated BCD storage. Note here The rebuild of BCD is completely thorough.
Step 3: Manually add Windows XP projects
It should be pointed out that since "bootrec /RebuildBcd" only detects Windows Vista and Windows Server 2008, it cannot detect and discover Windows XP. Therefore, we can only add Windows XP to BCD manually, otherwise multi-boot will occur. Only Windows Vista will appear in the menu, not Windows XP.
The bcdedit.exe command line tool can modify the startup configuration data storage. We can enter the following commands in the command prompt environment and execute them. The content in parentheses indicates the explanation of the command. There is no need to enter during execution:
bcdedit /create {ntldr} /d "Early Versions of Windows" (Create a new item named "Early Versions of Windows" in the storage)
bcdedit /set {ntldr} device partition=C: (Set the item option value in storage and set the application device to the C: partition)
bcdedit /set {ntldr} path\ntldr
bcdedit /displayorder {ntldr} /addlast (Set the order in which multi-boot menus are displayed in the boot manager)
In the above command, the tag "{ntldr}" is used to specify the OS loader that can be used to start operating systems earlier than Windows Vista. The information of "early versions of Windows" can be changed freely; "PARTITION=C :" means the active partition of the hard disk where NTLDR is located. Please modify the command according to the actual situation; "/addlast" means adding the specified item identifier to the end of the display sequence. For more available parameters of bcdedit.exe, please view the help file.
Finally, of course you need to restart the system. At this time you will find that the problem has been solved. Friends who need this can give it a try.
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