CompTIA A+ Core 2 (220-1202)Software TroubleshootingMedium
A technician's PC displays the error 'BOOTMGR is missing' after an improper shutdown. Which command should the technician run from the Windows Recovery Environment to rebuild the boot configuration data store?
- Abootrec /rebuildbcd
- Bbootrec /fixboot
- Csfc /scannow
- Dbootrec /fixmbr
Show answer & explanationAnswer & explanation
Correct answer: A. bootrec /rebuildbcd
bootrec /rebuildbcd scans all disks for compatible Windows installations and rebuilds the Boot Configuration Data (BCD) store, which is the correct fix when BOOTMGR is missing or the BCD is corrupted.
Why the other options are wrong
- B. /fixboot writes a new boot sector but doesn't rebuild the BCD entries.
- C. sfc /scannow repairs system files, not the boot configuration.
- D. /fixmbr repairs the master boot record, not the BCD store.
bootrec /rebuildbcd
A Windows Recovery Environment command that scans disks for Windows installations and rebuilds the Boot Configuration Data store used by BOOTMGR.
- Used when BOOTMGR is missing or BCD is corrupted
- Part of the bootrec.exe toolset
- Run from WinRE command prompt
Memory trick: Rebuild the BCD house from scratch when BOOTMGR vanishes