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Zorluk: OrtaTroubleshooting Windows OS Startup and Boot Errors

Following an unexpected power disruption, an office computer running Windows 10 fails to boot, presenting the message 'An operating system wasn't found.' A desktop support specialist boots the machine into the Windows Recovery Environment (WinRE) Command Prompt. The technician needs to scan all connected storage drives for installed Windows operating systems and rebuild the Boot Configuration Data (BCD) repository to restore startup functionality. Which command-line entry should the technician execute?

  1. bootrec /rebuildbcdCevap
  2. B
    bootrec /scanos
  3. C
    bootrec /fixboot
  4. D
    sfc /scannow

Cevap

The command 'bootrec /rebuildbcd' scans all connected disks for Windows installations and lets the technician add them to the BCD store.
The option specifying 'bootrec /rebuildbcd' is correct because it actively searches all connected storage volumes for Windows installations and prompts the user to add identified installations to the BCD store, which directly fixes missing operating system boot pointers.

Adım Adım Çözüm

1
Identify the cause of the startup failure
The 'An operating system wasn't found' error indicates missing or corrupted BCD boot entry references.
The system cannot locate the boot loader configuration needed to launch the OS.
2
Select the appropriate WinRE command-line utility and switch
Using bootrec with the /rebuildbcd parameter scans disks and provides an option to manually import found Windows installations.
This actively restores missing boot entries into the BCD repository.

Anahtar Kavram

Rebuilding the Windows Boot Configuration Data (BCD) store using Bootrec tools
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Troubleshooting Windows OS Startup and Boot Errors

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