Aurora R13, installing Windows 11 on a new, unformatted SSD

Make sure drive is set to AHCI and not RAID.

I would also use installation media directly from Microsoft rather than Dell: Microsoft Windows 11 Media 

It's a 2TB Samsung PCIe 4.0 NVMe M.2 SSD. I don't see any drive-specific settings for M.2 SSD's in the BIOS.

Well first of all, AFAIK, DBaR has been depreciated for Windows-11. For Windows-11, I thought you only used Microsoft's tools.

The BIOS setting for AHCI/RAID might be under SATA:

On Dell/Alienware, SATA options reportedly seem to affect PCIe drives (like NVMe SSDs)
- I think because all drives need to be accessed one way or the other, so...
Set to AHCI (recommended). Microsoft's drivers will be used (and they work fine).

https://www.dell.com/community/Windows-General-Wiki/Guide-to-migrate-to-a-New-Windows-11-computer/ta-p/8307872

Yes, I've found that starting with an un-formatted, un-partitioned, un-initialized, raw SSD works best:

- Install Windows to the un-allocated space.
Walk through any prompts and let computer reboot as required.
- The Installer will automatically Initialize the drive as GPT, partition appropriately, and format as NTFS for you

The one thing you don't mention is are you looking for a clean install or setting the new drive to a factory configuration with the Dell Software included?

See the service manual: R13 service manual 

With RAID mode set to on you will not be able to see any drive unless you manually add the proper RAID driver during Pre-installation of the OS.

That's why I would highly recommend to simply switch from RAID to AHCI mode, since RAID in a gaming PC has little effect unless you are doing something like 2 x M2 drives in RAID 1 mode. Even then I would not recommend it without a proper backup strategy in place.