Windows boot process wikipedia

Starting in Windows 10, version , Windows no longer automatically backs up the system registry to the RegBack folder. This change is by design, and is intended to help reduce the overall disk footprint size of Windows.

To recover a system with a corrupt registry hive, Microsoft recommends that you use a system restore point. For more details, check this article. If the system gets stuck during the kernel phase, you experience multiple symptoms or receive multiple error messages.

These include, but are not limited to, the following:. For example, "0xC2" , "0xB" , "inaccessible boot device" and so on.

The screen is stuck at the "spinning wheel" rolling dots "system busy" icon. If either of these options works, use Event Viewer to help identify and diagnose the cause of the boot problem.

To view events that are recorded in the event logs, follow these steps:. In the console tree, expand Event Viewer, and then click the log that you want to view. For example, click System log or Application log. On the Edit menu, click Copy , open a new document in the program in which you want to paste the event for example, Microsoft Word , and then click Paste. To troubleshoot problems that affect services, do a clean boot by using System Configuration msconfig.

Select Selective startup to test the services one at a time to determine which one is causing the problem. If you cannot find the cause, try including system services. However, in most cases, the problematic service is third-party. Disable any service that you find to be faulty, and try to start the computer again by selecting Normal startup. For detailed instructions, see How to perform a clean boot in Windows. If the computer starts in Disable Driver Signature mode, start the computer in Disable Driver Signature Enforcement mode, and then follow the steps that are documented in the following article to determine which drivers or files require driver signature enforcement: Troubleshooting boot problem caused by missing driver signature x Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method.

These problems might require that you reinstall the operating system. Depending on the implementation and configuration, the server can now determine whether the client is healthy and grant the client access to either a limited quarantine network or to the full network. Secure Boot, Trusted Boot, and Measured Boot create an architecture that is fundamentally resistant to bootkits and rootkits.

In Windows, these features have the potential to eliminate kernel-level malware from your network. With Windows, you can truly trust the integrity of your operating system.

Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Submit and view feedback for This product This page. View all page feedback. UEFI always includes the former but not necessarily the latter in a usable form.

If you need it, check out rEFInd. Under Linux, investigate efibootmgr. Your x drive will now be the ESP, but only for that command prompt and any child processes. You can examine it with the usual cd and dir DOS commands, or to examine with filemanager, type. View Discuss Other View source History. What links here. Related changes. Special pages.

Printable version. Permanent link. Warning: A boot loader must be able to access the kernel and initramfs image s , otherwise the system will not boot. That means it must have support for everything starting from the block devices, stacked block devices LVM, RAID, dm-crypt, LUKS, etc and ending with the file system on which the kernel s and initramfs image s reside.

Note: Loading Microcode updates requires adjustments in boot loader configuration. This protocol may however cause issues with certain BIOS implementations; see rodsbooks for details.

Encryption mentioned in file system support is filesystem-level encryption , it has no bearing on block-level encryption. Categories : Boot process About Arch. Inherited from firmware 1. Without encryption. Yes 2. Without tail-packing feature. Supports auto-detecting kernels and parameters without explicit configuration, and supports fastboot [3]. Without: multi-device volumes, compression, encryption.

MBR only; without sparse inodes. No support for certain file system features.