Recreate ASUS F9 recovery functional partition

As many did, I upgraded my ASUS G751JY from Windows 8.x to Windows 10, and this destroyed ASUS F9 built-in recovery feature. When I press F9 now it will give me a BSOD with:

Your PC needs to be repaired
A required device isn't connected or can't be accessed.
Error code: 0xc0000225
[ A text saying I should use recovery tools on my installation media to fix the issue. ]
Press Enter to try again
Press F8 for Start-up Settings
Press Esc for UEFI Firmware Settings

This happens every time I want to use F9, then every time I have also to repair Windows boot (have no problem, I know how to do this and regenerate a correct BCD), so my idea now is to recreate a generic Windows 10 install partition working with ASUS F9 feature.

Here is my current situation:


but Recovery partition was Disabled.
No problem. I've managed to re-Enable it using the REAgentC command:

Code:

C:\Users\Luca\Desktop>reagentc /info
Informazioni di configurazione per Ambiente ripristino Windows
e la reimpostazione del sistema:


    Stato Ambiente ripristino Windows:      Enabled
    Percorso Ambiente ripristino Windows:   \\?\GLOBALROOT\device\harddisk0\partition4\Recovery\WindowsRE
    Identificatore dati di configurazione di avvio (BCD): fc0612d5-20ce-11e6-8adf-9bc77791b978
    Percorso immagine di ripristino:
    Indice immagine di ripristino:          0
    Percorso immagine personalizzata:
    Indice immagine personalizzata:         0


REAGENTC.EXE: operazione riuscita.

ASUS F9 still not working giving me BSOD Erorr 225.

Following some guides on the net I've been also able to create a generic "install.wim" starting from MediaCreationTool's Windows 10 ISO file and "<mounted Windows 10 iso>:\sources\install.esd", using the DISM command:
dism /Export-Image /SourceImageFile:"MY_ESD_FILE" /SourceIndex:1 /DestinationImageFile:install.wim /compress:recovery /CheckIntegrity

How do I proceed now?

1. Add a new additional 4GB recovery partition with GUID ID: DE94BBA4-06D1-4D40-A16A-BFD50179D6AC
2. copy "install.wim" into this partition (requires a specific dir structure or the root will be enough?)
3. use "REAgentC /setosimage ..." and target to the new partition with the wim file

Is this correct? Will this make ASUS F9 work again?

correct - as far as the OS Image Recovery
Not sure about F9

as you would have to regenerate the bootkey

You can use the E: drive
copy the install.wim into a RecoveryImage folder
then point to it...

or you can shrink E: and create a RecoveryImage partition...

the install wim has to be in a folder - not on the root of the partition...

ONE MAJOR NOTE...
If you reset the PC your Data partition E: will be removed... So very important that if you reset - you MUST select keep current partitions...

that is the problem with having your DATA on the same Drive as the windows OS

You are way better off - not using the Recovery Option at all > with your current disk/partition layout....

If windows ever went bad - just run the windows 10 setup.exe - from within the current windows 10 OS
To repair windows and keep your files and programs..

Known as a Repair Install...

Everything properly set:
DISKPART> detail partition

Partizione 6
Tipo : de94bba4-06d1-4d40-a16a-bfd50179d6ac
Nascosta : Sì
Richiesta: Sì
Attributo : 0X8000000000000001
Offset in byte: 955899707392

Volume ### Let. Etichetta Fs Tipo Dim. Stato Info
--------- --- ----------- ----- ---------- ------- --------- --------
* Volume 3 Recovery NTFS Partizione 4095 Mb Integro Nascosto



C:\WINDOWS\system32>reAgentC /info
Informazioni di configurazione per Ambiente ripristino Windows
e la reimpostazione del sistema:


Stato Ambiente ripristino Windows: Enabled
Percorso Ambiente ripristino Windows: \\?\GLOBALROOT\device\harddisk0\partition4\Recovery\WindowsRE
Identificatore dati di configurazione di avvio (BCD): 6ca57f00-2280-11e6-be75-d0a88fc569a8
Percorso immagine di ripristino: \\?\GLOBALROOT\device\harddisk0\partition6\Recovery_Windows10
Indice immagine di ripristino: 1
Percorso immagine personalizzata:
Indice immagine personalizzata: 0


REAGENTC.EXE: operazione riuscita.

...but unfortunately ASUS F9 still doesn't work as expected (here is a working video from YT) and returns the usual BSOD Error 225 mentioned in first msg
Mmmh... I start to think F9 simply works by booting from the first Recovery partition it can find, usually put after C: on ASUS G751JY laptops as shown in this example pic coming from an online review:


Probably it expects to find something more than the install.wim file there as it asks for winload.efi pressing F8 after BSOD is displayed:


EDIT: maybe I could try copying the entire Windows 10 ISO inside the first recovery partition and see what happens pressing F9...

Let's see if I can find another G751JY user with working F9 so we can discover what's inside the 12GB recovery partition from ASUS...
Honestly I can't remember if I manually deleted the original partition or was wiped out by Windows 8.1 -> 10 upgrade (more likely).