You probably moved the folder to some other folder
Windows search sometimes doesn't show what you're searching
Install Everything
On Everything insert a file name that was on the deleted folder....

As I suspected, drive 2 is Advanced Format to allow a MBR to be bigger than 2.2T.
Advanced Format was a workaround to be able to have drives bigger than 2.2T on systems (like Win XP) that wasn't...

The drive 2 must be a Advanced Format type
- It has an active partition, so it should be a MBR
- MBR has a 2.2 T limit unless it is Advanced Format

Open Disk manager.
View - Top - Disk list...

I see that you already removed the EFI and Recovery partition letters

As the drive 2 isn't boot able, lets remove the active flag

diskpart
select disk 2
select part 1
inactive
exit

The recovery environment is on the Recovery partition (as it should)
Could you please post a Disk manger image of all drives?

let's see if you have Win RE
Open a CMD window as administrator and type:
reagentc /info

Nothing wrong with md R:\Recovery\WindowsRE
Yes, I mistyped on #38 and #53 and I did recognized my mistake.

I have Minitool Ver 9.1 that can fix some drive issues that new versions don't.
Also have DiskGenius that is very, very good.

In fact the command md R:\Recovery\WindowsRE has created the directory (folder) under R

Yes, my mistake, sorry.

Under Win 10
- Download the USB Win 11 23h2 iso file using MCT
- Disconnect from the internet.
- Right click on the iso file and select mount.
- On the virtual drive...

Congratulations, you're doing great.
What version of win 10 you have, Home or pro?

Let's create a new Recovery partition on the unallocated space
diskpart
Sel disk 0
create par prim
format...

Next step:
- Boot from Win 10 USB installation drive
- delete partition 3 and 4
- Shrink C: in 450M

Boot from a Win 10 installation drive and at the Windows Setup screen, press Shift+F10...

Open a CMD window as administrator and type:
bcdboot C:\Windows /s W: /f UEFI

Sorry, it is C: not G:

Why partition 1 has no Letter?

Open a CMD window as administrator and type:
diskpart
select disk 0
select part 1
assign letter=w
exit
bcdboot C:\Windows /s W: /f UEFI

Next step
- Delete the System partition and create a new EFI partition on it.

Open a CMD window as administrator and type:
Diskpart
sel disk 0
sel part 1
del part override
create part EFI ...

Next step
- Delete the System partition and create a new EFI partition on it.

Open a CMD window as administrator and type:
Diskpart
sel disk 0
list part (it will list all partitions on disk 0)...

try to run as administrator on a CMD window
shutdown.exe /p

Boot from C: as UEFI

So my suggestion is to shutdown, set BIOS to boot as UEFI and boot from it.
Once booted, lets delete the System partition.

Did you created the Win 10 USB installation drive on it?

Why is drive 2 set as active? Did it once had Windows on it?

Pentagon, why are you creating / loading the WinRE if the partition needs to be enlarged?
S.. happens when the hands goes faster than the brains.
I like to do things step by step.

The MBR2GPT was successful.
The first system partition can't be deleted because the computer booted as Legacy-MBR using the system partition. Once you boot as EFI-GPT you will be able to delete it....

Please edit your profile with ALL your hardware specs. It will help us to help you
System Specs - Fill in at Ten Forums
Do you have a SSD or HDD as the main drive?

Regarding the Recovery...

Add or Remove Keyboard Layouts in Windows 10