[SOLVED] RAID0 array shows up as separate drives when installing Windows 10

[daslamminsalmon]

I'm trying to install Windows 10 on two 1TB Intel 660p NVMe drives. The motherboard is the ROG STRIX X570F Gaming. I have created the array in BIOS (latest version), changed the SATA mode to RAID, enabled NVMe RAID, disabled CSM launching. When installing Windows, the two drives show up separately, each having an EFI partition and a second, entirely full partition that is the wrong format and unable to install to.
I have downloaded what I believe to be the correct drivers from the support page to load during installation but I get a message stating there are no signed drivers found.
Any suggestions would be appreciated!

 

[USAFRet]

First question - Why RAID 0 with 2x 660p?

 

[daslamminsalmon]

First question - Why RAID 0 with 2x 660p?

No specific reason really. Already had one drive and wanted to add more capacity. Figured it would be straightforward but that hasn't been the case...

 

[USAFRet]

No specific reason really. Already had one drive and wanted to add more capacity. Figured it would be straightforward but that hasn't been the case...

1TB + 1TB + RAID 0 = 2TB
1TB + 1TB - RAID 0 = 2TB. Just two different drive letters. Which is actually preferable.
With a RAID 0, if either drive, or the RAID controller burps...all data across both drives is lost.

It does not 'add' space.