Windows XP repair installation steps

The steps are as follows:
When the screen displays Press any key to boot from CD (press any key to start booting from the disc) information, you should press any key to reboot the system from the Windows XP CD. When you see the screen showing To setup Windows XP now (press Windows XP now), press the ENTER key, then, when the Welcome to Setup screen appears, press ENTER again. Car) button. Please do not choose to press the R key, as this will call the Recovery Console. Sound Card Failure
On the Windows XP Licensing Agreement screen, press the F8 key to accept the license agreement. Nationwide warranty
Make sure that the version of Windows XP you are currently installing is selected in the box, then press R to start repairing Windows XP. Follow the on-screen instructions to complete the Setup operation BOIS failure
How to install Win2000 after WinXP
This method can only be applied to FAT32 format hard disk.
Install Windows 2000
1) Use a Win98 \\Me Startup disk (supports CD-ROM drive) to boot your computer. 2) Put the Windows 2000 CD in your CD-ROM drive. 3) At the A: prompt, type X:\\I386\\WINNT.EXE where X: is your CD-ROM drive letter. 4) Start installing Windows 2000 to a non-Windows XP installation partition. 5) After the installation is complete, restart your computer in Windows 2000.

repair Windows XP boot information
with your Windows XP CD to start the computer. When you reach the Setup or Repair step, choose Repair. In the repair console, enter the following:
1) FIXBOOT, answer Yes 2) CD 3) ATTRIB -H NTLDR 4) ATTRIB -S NTLDR 5) ATTRIB -R NTLDR 6) ATTRIB -H NTDETECT.COM 7) ATTRIB -S NTDETECT.COM ATTRIB -R NTDETECT.COM 9) COPY X: I386NTLDR C: 10) COPY X: I386NTDETECT.COM C:

X is your drive letter.
Backup WinXP dual boot menu
When dual boot is normal, backup the C drive files (some are hidden and system properties.), as long as you just use these files to copy to the C drive to restore.
NTDETECT.COM ntldr MSDOS.SYS IO.SYS BOOTSECT.DOS bootfont.bin BOOT.INI