@Fernando
Yes I did it, I also did a low level format for both ssds but it doesn't boot with the second drive attached.

@MeatWar
Do you have a Thunderobot 911MT 3050 too? My notebook come with the SSSTC CL1-8D512 but I immediatly added the Blitzwolf BW-NV5 and with Win10 I had no issues, only Win11 couldn't boot.
This is my bios:



NVMe menu:



With VDM on:

Still u didnt answered of we ask u... its hard to help like this and NO i dont have this laptop but we do try to help and a research and time was spend.
Better read back all that was post and start digging yourself based on my suggestions and Fernando.
Get that Blitzwolf under a heavy truck or sell it, as it seems to be the cause of ur problems.
By ur report, u got both OS 10/11 correctly working unless u add it. Good luck.

@MeatWar
Ok, I try to make it easy... Windows 11 doesn't boot if I attach a drive (Blitzwolf or SSSTC it's the same) on the slot marked on the mobo as "SSD2 PCIE/OPTANE" so this port have to be free.

This is a scheme of the configuration:

Windows 11
port0 _ port1
0 _ 0 : boot
1 _ 0 : boot
0 _ 1 : no boot
1 _ 1 : no boot

Windows 10
port0 _ port1
0 _ 0 : boot
1 _ 0 : boot
0 _ 1 : boot
1 _ 1 : boot


The boot is stuck at the beginning:

We already know that its ur Blitzwolf NVMe drive is causing all the issue."
And seems that u WANT NOT to be the problem no matter what... so believe wot ever u want.

SSD1 is PORT 0 and is the default primary slot, period.
That stuck smells like storage system driver... as i predicted due to configurations.
Again... HAVE U TRIED another brand/model or the Blitzwolf NVMe disk alone in SLOT 0 AS Fernando mentioned?
I really dont understand wot u expect from this... if the Bliztwolf is the problem or if the Banggood laptop is bad, they were both ur choices.

EDIT: Sry... too much posts and reading all over the forum.
Understood, borrow a couple of drives to a friend, if it happens again complain to Banggood and the wonderful laptop HW design...
And u can always try to contact http://www.thunderobot.com/ and im sure they'll have a solution for u, cheers.

@MeatWar: where did you read that the problem is the Blitzwolf drive?? I repeated many time that the issue happens indifferently with each drive.

I really don't know how to explain such a simple concept, I need to make a draw?

I repeat, I can install Windows 11 on each drive only if the second slot is free, but if I attach the second drive, or re-attach it after the clean flash, Windows 11 doesn't boot. Windows 10 haven't the same problem.

@Fernando
VMD mode is disabled because if I turn it on I loose the drives. Take a look at post #16 please, you can see my bios setup with VMD enabled and disabled.

I'll try to add the drivers to the iso.

Edi:

Great Fernando, you solved my problem!!
I enabled VMD mode and I used 64bit Intel RST VMD driver. I didn't integrated them on the iso but I simply installed during clean flash and everything worke like a sharm! Thanks!