General discussion



By galehickey2 ·
I need a boot sequence from the time a pc is powered on up to but not including loading the OS.

This conversation is currently closed to new comments.

3 total posts (Page 1 of 1)  
Thread display: Collapse - | Expand +

All Comments

Collapse -

by dmiles In reply to INTEL BOOT SEQUENCE

There are four key files used during the boot process of Windows NT on Intel x86-based systems: BOOT.INI, NTLDR, NTDETECT.COM, and NTOSKRNL.EXE. They are responsible for starting the Boot Loader, building the hardware list, and loading the Windows NT kernel. The following describes the steps taken during the boot sequence.
Boot Sequence for x86-Based Machines
Power on self-test (POST).
Find boot device and load boot record (handled by the system BIOS). The master boot record (MBR) reads the partition table, determines the location of the boot record, and then jumps to that sector and begins execution there.
Windows NT bootstrap routine finds and loads NTLDR.

NOTE: Steps 2 and 3 as documented on page 474 of the Windows NT System Guide are in reverse, incorrect order. The step order listed here is correct.
NTLDR switches processor to 32-bit flat memory mode.
NTLDR reads the BOOT.INI and displays operating system choices.
User selects an operating system (Windows NT in this example).
NTDETECT.COM builds the hardware list. It then passes the list and control back to NTLDR. If an operating system other than Windows NT is selected, BOOTSECT.DOS is loaded and control is passed to it.
NTOSKRNL.EXE loads and initializes Windows NT using information from the Registry to load and initialize drivers and other system settings.

Collapse -

by galehickey2 In reply to

Poster rated this answer.

Collapse -

by galehickey2 In reply to INTEL BOOT SEQUENCE

This question was closed by the author

Back to Windows Forum
3 total posts (Page 1 of 1)  

Related Discussions

Related Forums