11/2/2022 0 Comments Uefi disk map![]() load and execution of Windows NT6 loader - file "winload.efi" from "\Windows\System32" folderĪnd here a visualization of Windows UEFI boot process from an UEFI Plugfest - Windows boot environment by Murali Ravirala from Microsoft.(it is not clear what's the purpose of Windows boot manager ("\EFI\Microsoft\Boot\bootmgr.efi") - should be investigated) display of Windows boot menu (skipped if only one boot entry).no master(MBR) and partition boot record(PBR) code used! load and execution of first boot candidate (first entry in NVRAM boot order - usually Windows firmware boot manager(\EFI\Microsoft\Boot\bootmgfw.efi)).UEFI/GPT boot process from hard disk goes like this: If active partition is mapped to c: drive then the full path to system BCD is "c:\Boot\BCD". If BCD resides on an unmapped active partition the full path is "\Device\HarddiskVolumeN\Boot\BCD" where N is a number starting from 1. You can use Disk Management or diskpart.exe to view and set the active partition. The active partition (also a primary partition) can be mapped to a drive letter like c:, d: or be the unmapped "System Reserved" partition. #Uefi disk map drivers#
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