Which tool to recover the EFI partition? Booted into Rescue Disk

bootrec /scanos
bootrec /rebuildbcd


what exactly is that going to do and is there any possibility of damage or wiping out user data?

No those two command rebuild BCD store so Windows 10 can boot from it.

bootrec /scanos

OK I see it's just an informative command.. and it pulled up C:\Windows, does that mean it diagnosed it as the problem drive?

It found the Windows 10 installed partition execute next command.

FreeBooter said:

No those two command rebuild BCD store so Windows 10 can boot from it.

Understood, makes sense. Running the /rebuildbcd feature, it says:

Add installation to boot list?
yes/no/all

Type Yes

FreeBooter said:

Type Yes

I did and getting the infamous message:

The requested system device cannot be identified due to multiple indistinguishable..... (rest as above)

Maybe this?

bootrec /fixboot

Can you execute Diskpart command and list disk commandand if you can take a screenshot of the output of the command.

I cannot take a screenshot but I can do the next best thing: