Windows Server 2012 R2 Boot Repair Jun 2026

: Essential for fixing the Master Boot Record (MBR) or Boot Configuration Data (BCD). Common commands include: bootrec /fixmbr bootrec /fixboot bootrec /rebuildbcd Replacing Boot Files

| Error Code | Likely Cause | Quick Fix Method | |------------|--------------|------------------| | 0xc000000e | BCD corruption | Method 2 | | 0xc000000f | Bootmgr missing | Method 2 (fixboot) | | 0xc0000225 | Partition issues | Method 2 + diskpart active partition | | 0xc000021a | Registry corruption | Method 4 | | INACCESSIBLE_BOOT_DEVICE | Storage driver | Method 7 | | 0xc0000034 | Boot file missing | Method 2 (rebuildbcd) | windows server 2012 r2 boot repair

bootrec /fixboot

: Choose Troubleshoot > Advanced options > Command Prompt to enter the diagnostic shell where all manual repairs occur. II. Automated and Manual Bootloader Repairs : Essential for fixing the Master Boot Record

If WinRE fails to load, your installation media may be damaged, or the disk has severe hardware failure. Automated and Manual Bootloader Repairs If WinRE fails

This can take hours on large server drives.