You have a computer named Computer1. Computer1 runs Windows 10 Pro. You attempt to start Computer1 but you receive the following error message: Bootmgr is missing. You need to be able to start Computer1. What should you do?
A.
Start the computer in recovery mode and run the bootrec /rebuildbcd command.
B.
Start the computer in recovery mode and run the diskpart /repair command.
C.
Start the computer in recovery mode and run the bcdboot /s command.
D.
Start the computer in recovery mode and run the bootcfg /debug command.
Correct answer.
https://support.microsoft.com/en-us/topic/use-bootrec-exe-in-the-windows-re-to-troubleshoot-startup-issues-902ebb04-daa3-4f90-579f-0fbf51f7dd5d
Use the Bootrec.exe tool to troubleshoot a "Bootmgr Is Missing" error. If rebuilding the BCD store doesn't resolve the startup issue, you can export and delete the BCD store and then run this option again. By doing this, you make sure that the BCD store is completely rebuilt.
The correct answer is A. Start the computer in recovery mode and run the bootrec /rebuildbcd command.
Explanation: The "Bootmgr is missing" error message usually indicates a problem with the Windows bootloader. One way to fix this issue is to run the bootrec /rebuildbcd command from the recovery mode, which can be accessed by using a Windows installation media or the Windows Recovery Environment. This command rebuilds the boot configuration data (BCD) file, which is responsible for loading the operating system.
Answer B is incorrect because the diskpart utility is used for managing disks and volumes and is not used for repairing the boot manager.
Answer D is incorrect because the bootcfg utility is a command-line tool for modifying the Boot.ini file, which is not used in Windows 10.
Answer C is partially correct but incomplete. While the bcdboot command can be used to create a new boot loader on the system partition, it requires additional parameters to specify the target location and the boot configuration data. The correct syntax would be "bcdboot C:\Windows /s C:" where C:\Windows is the location of the Windows installation and C: is the target partition for the boot loader.
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