[NAME]  - Sounds like you didn't change BIOS to AHCI, after you booted from the new SSD. Samsung's software and drivers do not like RAID. This is the correct way to make the change after booting from the SSD: EDIT: FWIW, I always tell users to make the change to AHCI when booting from the HDD before cloning onto an SSD. Otherwise, if something goes wrong, the PC won't be able to boot from the HDD again, if BIOS is changed to AHCI, only after booting Windows from the new SSD.
[NAME]  Hello! A couple of years back, you generously helped me work through swapping out an HDD in my 8930 for an NVMe SSD to make the new SSD the new boot drive. (C: drive).  I'm now prepping to do the same thing in an older 8910. I have a Samsung NVMe installed and initialized, ready to go. I've re-read our thread to reacquaint myself with the process. And I've been reading some other posts of yours helping others through this. I think a mistake I made last time, which made things harder, was that I didn't change the HDD from RAID to AHCI before I cloned the HDD to the SSD with the Samsung Data Migration tool.  I've read where you advise doing that first. Any other tips before I do this would be greatly appreciated! Is there a tool you know of to clean up the current C: drive, removing unneeded junk, before cloning? Thanks so much!
XPS 8910, making NVMe SSD the boot drive