I've seen so many folk do the following and no, it does not work. What? "switch SATA controller modes."
Here's the deal. You set the mode you want before you install Windows. As to the other drives, these must have backups PLUS be removed during an OS install or they risk getting wiped out. There are thousands of posts about this with some writing it will be fine and the screamers telling us they lost it all.
Problem with MSI On-Board PIDE/SATA Drivers on a MSI B450 TOMAHAWK MOBO
I'm in trouble...
I recently build a new pc, and loaded it up with Windows 10 on a 120gb normal SSD (i have to other drives as well 1tb HDD and 250 m2 SSD)
everything was good but I wanted to do a fresh install of windows again on the 120 GB SSD, in order to get another version of windows. At this point, I had already downloaded some games to the 250gb m2 SSD.
Everything worked fine with the fresh install, and I wanted to install the drivers again. I installed the chipset drivers and then wanted to install the On-Board PIDE/SATA Drivers for the motherboard.
Before I did, it warned me to back up my NVMe drive and switch to RAID mode. I, stupid as I was, only backed up the drive and proceeded to install. It installed and I restarted my PC and it installed a new program, RAIDexpert2. I also discovered that I couldn't access my m2 SSD anymore (even though it was shown in the BIOS). I tried to uninstall the program, but that did not work.
Then I researched on how to switch to RAID mode in the BIOS thinking it would solve the problem, it did not...
That just broke windows, so I switched back to AHCI, and now it works again. but still no m2 SSD.
I thought I had to download that stupid driver, and now my new Samsung 970 Evo 250gb SSD is gone. I can see it in the BIOS perfectly fine, but windows can't find it.
I am in way over my head, and I just hope that someone in here knows what I have done, and what I have to do to get my m2 SSD back.
The disk is not being listed in diskpart either.