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To resolve this error, the EFI partition needs to be fixed. Follow the steps below:

 
Create a backup disk before attempting to fix the EFI partition.
  1. Mount the EFI partition using the command below:

    mountvol b: /s

     
    Make sure that the mounted partition is the correct one. When the disk is connected to a different machine, you may need to use diskpart to mount the EFI partition.

    If the mountvol command does not work, use the diskpart command. Below is an example:

    diskpart 
    list disk
    select disk # Note: select the target disk
    list partition
    select partition # Note: Select the EFI System partition.
    assign letter=b
    list volume
    exit

    Dispart - File System

     
    The File System (Fs) may display RAW if the partition became corrupted.
  2. Use chkdsk to fix the partition. Follow these steps:
    1. Make sure that chkdsk still detects the file system of the partition:

      Check Disk

    2. Fix the partition using the command below:
      Chkdsk /F b:
    3. Unmount the partition by using this command:
      mountvol b: /d

      If the mountvol command does not work, use the diskpart command. Below is an example:

      diskpart 
      remove letter=b
      list volume
      exit