Open the disk partitioning utility to find your hidden EFI partition:
The Ultimate Guide to Windows Server 2012 R2 Boot Repair When a critical server fails to boot, it can cause significant disruptions to your business operations. While Windows Server 2012 R2 has been a reliable workhorse for many enterprises, issues like power outages, corrupt updates, failing hard drives, and malware can still result in a server that won't start.
Step 4: Resolving "Access is Denied" or Active Partition Issues windows server 2012 r2 boot repair
Insert the Windows Server 2012 R2 installation media (USB or DVD) or attach the ISO to your virtual machine.
cd /d S:\EFI\Microsoft\Boot\ bcdboot C:\Windows /s S: /f UEFI Use code with caution. Open the disk partitioning utility to find your
list volume select volume X (Replace X with the volume number of the FAT32 EFI partition) assign letter=S (Assigns the temporary drive letter S) exit Use code with caution. 2. Recreate the Boot BCD Store
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. cd /d S:\EFI\Microsoft\Boot\ bcdboot C:\Windows /s S: /f
Run a disk check to scan for and fix file system geometry and bad sectors: chkdsk C: /f /r Use code with caution. /f : Fixes errors on the disk. /r : Locates bad sectors and recovers readable information. Running System File Checker (SFC) Offline
Restart the server and enter the BIOS/UEFI boot menu (usually by pressing , F12 , or Esc ). Select the installation media as the primary boot device. Step 2: Navigate to the Recovery Environment
He tapped the keys to boot from the USB, bypassing the broken OS. Instead of the login screen, he was met with the blue "Choose an option" menu. He navigated through and into the Advanced options . 2. The Command Line Battlefield