Windows 10 bootrec /fixboot access is denied

Hi, I was in a hurry and made the stupid mistake of not backing up before I resized a partition on my new Acer laptop, intending to clone my Windows 10 installation from a 1TB HDD to a 500GB SSD. Although the hard drive has less than 100GB used space, needless to say an error occurred, Error Code 0xc0000225.

The recovery partition of the HDD is not accessible using Alt F10 at the splash screen as recommended by Acer.

I have been following the advice in this video

My attempts so far:

I booted into a Win 10 flash drive and tried automatic repair, which took hours but did not work.

Next I tried command prompt - bootrec /rebuildbcd, which was successful; bootrec /fixmbr, also successful; and finally bootrec /fixboot - but that was not successful and returned an "access is denied" message.

Not sure whether to move on to the next suggestion, which is using Diskpart, or continue trying to find some way to get a successful result from bootrec /fixboot.

Advice would be much appreciated.

[Moved from: Windows / Windows 10 / Windows update, recovery, & backup]

 

Question Info


Last updated August 25, 2019 Views 680,803 Applies to:
Answer
Answer

I had the same issue with the command Bootrec /Fixboot "Access is denied",

This only happens with Windows 10 1709 install media.

I tried the same command  with Windows 10 1703 install media and do not get the error "Access is denied".

This looks like an error with the install media for Windows 10 1709

Regards

Mark

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Answer
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Windows 10 Installation Media:

  1. Insert the Media (DVD/USB) in your PC and restart.
  2. Boot from the media.
  3. Select Repair Your Computer.

Select Troubleshoot.

  1. Choose Command Prompt from the menu:

Type in the command:

Diskpart

Type in the command:

List disk            (Note which disk is your Boot drive number mine is 0)

Type in the command:

Sel disk 0

Type in the command:

List vol               (Note which volume is the EFI partition mine is 4)

Type in the command:

Sel vol 4

Type in the command:

assign letter=V:

Type in the command:

Exit

Type in the command:

V:

After you have assigned a drive letter Using Diskpart You can format the EFI partition:

Example: if you assigned a letter V to the partition the command would be:

format V: /FS:FAT32

After the format you need to recreate the EFI directory structure with the command:

MD \EFI\Microsoft\Boot

Then change to the Boot directory with:

cd /d V:\EFI\Microsoft\Boot\

Then run:

bootrec /FixBoot

Finally run:

bcdboot c:\Windows /l en-us /s V: /f All

Type in the command:

bcdboot C:\windows /s V: /f UEFI      (This replaces the above crossed out lines and works in Win 10 1709)

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