Windows 2003和2008启动流程的区别-优快云博客

本文对比了Windows Server 2003与Windows Server 2008的启动流程。主要区别在于2008版使用BOOTMGR替代了NTLDR，并引入了BCD文件来替代BOOT.INI进行配置管理，同时在加载核心组件和服务方面有所改进。

What is the difference between Windows Server 2003 and Windows Server 2008 boot process?

Steps

Windows Server 2003 Boot Process

Windows Server 2008 Boot Process

1

Power On -> BOIS Loaded -> POST

Power On -> BOIS Loaded -> POST

2

BIOS Looks for the MBR on the bootable device

BIOS Looks for the MBR on the bootable device

3

Through the MBR the boot sector is located and the NTLDR is loaded

Through the MBR the boot sector is located and the BOOTMGR is loaded

4

NTLDR reads BOOT.INI from the system volume to determine the boot drive

BOOTMGR reads the BCD (boot configuration database) file from the \boot directory

5

NTLDR loads and executes NTDETECT.COM from the system volume to perform BIOS hardware detection

BOOTMGR transfer control to the Windows Loader (winload.exe) or winresume.exe in case the system
was hibernated.

6

NTLDR reads the registry files, selects a hardware profile, control set, and loads drivers flagged as "boot" defined in the system hive, then passes control to NTOSKRNL.EXE

Windows Loader loads drivers that are set to start at boot and then passes control to NTOSKRNL.EXE

本文转自安安安安森 51CTO博客，原文链接：http://blog.51cto.com/smallc/1551984，如需转载请自行联系原作者