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Computer boot sequence

This is the sequence a computer uses when booting up.

  • POST –  Power On Self Test
  • BIOS reads the MBR – Master Boot Record
  • NTLDR reads BOOT.INI file to pick OS
  • NTLDR uses NTDETECT.COM to find hardware
  • NTLDR loads NTOSKRNL.EXE and HAL.DLL
  • NTLDR reads registry and loads drivers
  • NTOSKRNL.EXE starts WINLOG.EXE program and displays the login screen
  • * The NT kernel is the heart of the windows OS

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