Windows 10: I am trying to fix the REAGENTC.EXE: Unable to update Boot Configuration Data problem on my...

REAGENTC.EXE: Unable to update Boot Configuration Data

:)

 

How does Windows boot to advanced recovery option e.g. command prompt?

- that gives me a 454 'Unexpected error' This tells me that the BCD is partially corrupted.

The commands: shutdown.exe /r /o /f /t 00
or: %SystemRoot%\System32\Cmd.exe /c reagentc /boottore&shutdown /r /f /t 00
should boot into Recovery if everything is configured correctly.
FYI, If Windows is configured correctly:

1. If Reagentc is disabled, you still can get into Recovery but with limited options.
2. If Reagentc is enabled, you'll get all options.
3. If you boot Windows using Recovery USB stick, You'll get into Recovery with couple of options missing.

Here's my suggestion if you want to try:
OPTION 1: Will save the trouble of re-install Windows.

1. Download the image of my first 3 partitions (450MB Recovery, 100 MB EFI partition, and 16MB unformatted primary)
   EFI_Boot-00-00.7z - Google Drive
2. Run Macrium and restore the image from step 1, overwriting your existing 1st three partitions, leaving C alone.
3. Delete the 490MB Recovery partition.
4. From Macrium, run fix boot problems.
5. Reboot. Open Admin command prompt then run Reagentc /info to make sure that it is enabled. If not, enable it.
   if failed to enable, reboot and try again.

OPTION 2: Assuming you've already had Windows backup with Macrium.

1. Wipe out the first 5 parttiions. (450MB, 100MB, 16MB, C Drive, 480MB)
2. Fresh install Windows 10
3. Restore C drive from backup image, run fix boot problems
4. repeat step 5 from OPTION 1 above.

 

Reagentc failed

Shawn or other friend; in using MBR2GPT this am on a fresh install for which I used Win usb media - all of which went well, the conversion went well, but the edit to Reagentc failed. I thought, per the suggestion in the MBR2GPT.exe helps, to disable /enable but it all fails. Suggestion?

paste:
Code:

 

REAGENTC.EXE: Unable to update Boot Configuration Data.

Just so we are on the same page, if you set the re image, it will set the change in the BCD store, although another step is necessary to actually make the change. It does not change the location of the actual Winre.wim, which is placed during the install and is then the only version on the system.

Many commands were suggested in this thread. One was to copy the Winre.wim to the C: partition and then try to use it to set the recovery options.

I wondered, if the original Winre.wim was located correctly and usable, why try to move it, but it was done.

The reagentc /setreimage command is pretty much worthless unless you know the actual location of the Winre.wim file you want to use. And of course you need the partition and directory structure to do that. I believe you will also get a message stating the image is not available if you choose incorrectly.

The install in this thread has several warning flags, one of which is how they can boot as UEFI and secure boot from an NTFS partition. I might even try that tomorrow to see if my system will boot that way.

There may be some things we have not been told.