Windows Server 2012 R2 Boot Repair [ULTIMATE ⇒]

To begin repairs, you must boot from the Windows Server 2012 R2 installation media (DVD or USB). icttech.ca Insert the media and boot from it. Select your language and keyboard, then click Repair your computer (lower-left corner). Navigate to Troubleshoot Advanced options Command Prompt Microsoft Community Hub 2. Basic Boot Repairs (MBR/Boot Sector)

Before closing the recovery environment, run a storage health check on the OS volume to resolve any underlying file system corruption: chkdsk C: /f /r Use code with caution.

Writes a new master boot record to the system partition (does not overwrite existing partition table).

Open the disk partitioning utility to find your hidden EFI partition: windows server 2012 r2 boot repair

Execute the BCDBoot tool to fetch pristine system deployment files directly from your central OS drive partition and write them cleanly back into your mapped EFI directory: bcdboot C:\Windows /s Z: /f UEFI Use code with caution.

If your system uses UEFI rather than BIOS, the boot partition might be unassigned or corrupted.

Locate the volume formatted as . This is your hidden EFI System Partition (usually 100MB to 300MB in size). Note its volume number. To begin repairs, you must boot from the

Run select partition X (replace X with the partition number). Type active and press . Exit Diskpart and retry bootrec /fixboot . Recreating a Completely Missing BCD

The following steps should be performed in order, as each method targets a different potential root cause.

bootrec /rebuildbcd

Look at the column on the far right side of your primary server storage disk:

bootrec /fixmbr

If bootrec /fixboot returns an access denied error on an MBR system, the boot partition might not be flagged as active. Run diskpart , then list disk and select disk 0 . Open the disk partitioning utility to find your