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Zorluk: OrtaTroubleshooting Windows OS Startup and Boot Errors

After a system crash, a user restarts a Windows 10 desktop and receives a black screen with the error message 'Invalid partition table'. A technician boots the workstation into the Windows Recovery Environment (WinRE) command prompt to repair the Master Boot Record (MBR) and restore the boot configuration settings. Which TWO commands should the technician execute to resolve this specific boot issue? (Select TWO)

  1. bootrec /fixmbrCevap
  2. bootrec /rebuildbcdCevap
  3. C
    chkdsk /f /r
  4. D
    sfc /scannow

Cevap

The technician should run bootrec /fixmbr to repair the corrupted Master Boot Record structure and bootrec /rebuildbcd to scan for Windows installations and rebuild the Boot Configuration Data store.
The 'Invalid partition table' error occurs when the Master Boot Record boot code or partition table references are corrupted. Running 'bootrec /fixmbr' writes a valid Windows-compatible MBR to the system partition without altering existing partition structures. Following up with 'bootrec /rebuildbcd' ensures that any missing or unreferenced Windows OS installations are identified and incorporated into the Boot Configuration Data repository, allowing proper boot continuation.

Adım Adım Çözüm

1
Boot into WinRE and access the Command Prompt interface.
Access to offline command line recovery tools is established.
System partition modifications cannot be performed while the corrupted operating system attempts to boot.
2
Execute bootrec /fixmbr.
A master boot record compatible with Windows 10 is written to the system disk.
This directly resolves the 'Invalid partition table' error caused by corrupted MBR boot code.
3
Execute bootrec /rebuildbcd.
The Windows installations on the disk are detected and added back to the BCD store.
Rebuilding the BCD ensures that the Windows Boot Manager can locate and load the OS kernel successfully.

Anahtar Kavram

Master Boot Record (MBR) and Boot Configuration Data (BCD) Recovery in WinRE
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