At this point in the boot process winload loads basic

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At this point in the boot process, Winload loads basic information from the Windows registry along with any device drivers that are required by the operating system to boot. NTOSKRNL 3:21-4:04
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Now the basic configuration of the computer is complete, so control is now passed to the Windows kernel, or NTOS kernel. This is the core of the Windows operating system. At this point, you'll probably see a graphical logo display that indicates Windows is starting. During this process, NTOS kernel loads additional information from the registry. It also loads additional device drivers along with other programs and services that are required by the operating system. The goal of this stage is to load the operating system to the point where it can present the graphical interface that the user can use you log in. It is loading the operating system and getting it ready but in such a state that logon has not yet occurred. User Logon 4:05-5:10 The final step is to configure the operating system for the user. To initiate the logon process, Windows loads a program that displays a logon prompt. On older versions of Windows, this program was named Winlogon. For Windows Vista and later, two programs are used: WinINet and Winlogon. WinINet loads first followed by Winlogon. When they do, the welcome screen and the logon prompt are displayed. The user enters their logon credentials in this screen. They are validated to determinewhether to allow or deny access. Once authenticated, the user's profile is loaded. The user profile contains settings, files, and customizations that are unique to the user, including the desktop background. At this point, additional device drivers, services, applications, and any other processes that were not required at system boot are loaded. These typically would be associated with non-critical devices and services that are specific to the individual user account. After the user has successfully logged on, the Windows boot process is complete. Summary 5:11-5:19 In this lesson, we discussed the Windows boot process. We discussed four boot phases: POST, boot loader, operating system load, and user logon. Windows systems can boot using either a Legacy BIOS or a UEFI boot sequence. By understanding each of these boot sequences, you can focus troubleshooting efforts on the most likely errors. Legacy BIOS Boot The following diagram and table describe the four basic stages of the Legacy BIOS boot sequence: Stage Process POST (power-on self- test) On a system using BIOS, the following steps take place: 1. Power is supplied to the CPU. The CPU is hard-coded to look at a special memory address that contains a pointer (or jump program), which instructs the CPU where to find the BIOS program. 2. The CPU loads the BIOS program. The first BIOS process to run is the POST, which performs the following tasks: a. Verifies the integrity of the BIOS code.
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