Creator's upgrade appeared ok, but Advanced Recovery functions fail

Hi, so I bit the bullet, and upgraded. All went well, and seemed ok until I tried to get into Safe Mode or a command prompt outside of Windows, for example.

All the options were there, but when my PC restarted - nothing. Had to power down.

All had worked fine with the Anniversary build- only failed after upgrading.
Have you seen this?

Currently preparing to reinstall Windows and copy back (restore from image) my updated Windows partition.

Hi, some more information:

1. Can boot normally and into Safe Mode.
2. Attempting to boot to
- System Restore
- Command prompt
- Startup Repair

all give me a logo screen (my PC manufacturer)
+

Please Wait

- and nothing happens.

Now if I try a SHIFT left click restart from the lock screen before Safe Mode, I get an error which is reported:

/EFI/Microsoft/Boot/BCD

Status 0xc0000454

The boot configuration .......................................... contains errors.

When I clean installed the Creator's edition, Advanced recovery options worked.

They fail on
- my build upgraded from the Anniversary Edition (fully updated Creator's build)
- after restoring my fully updated Creator's build C: partition in place of that of a clean install of the Creator's build
- after an in-place upgrade repair install of that

Have tried
bootrec /rebuildbcd

Internet references to this error number (none on this forum!) indicate it is specially relevant to the Creator's Build rather than the Anniversary Build.

Note: Secure Boot is already disabled (found a reference suggesting that helped).

Startup Repair (run from installation DVD) (& which should be irrelevant as booting to Safe and Normal mode is ok) reports 'couldn't repair your PC'.

The log file (SrtTrail.txt) contains no errors.

Partitions:


The first partition on Disk 1 (data disk) was created in the upgrade. (No, I didn't open the laptop up and remove the SSHD before upgrading, never having had a problem before).

Hi, thanks - I did try reagentc /enable at one point

Makes sense. What do you make of the extra 128Mb partition on Disk 1?

I think I could assign a drive letter (e.g. R) to that recovery partition, then use this:
reagentc /setreimage /path R:\Recovery\WindowsRE

I can't work out the format of the command using "harddisk" number and partition number.
Disk 0:


Disk 1:

Thanks, I did it by assigning a partition letter... so I now have

but still the same symptom.

Thanks, it seems set now to the correct one of the two - correct size and content.


The other (odd size) seems to have no meaningful content: