Had the same problem Samsung Magician would show "samsung ssd 860 evo 250gb this drive is not supported." I have this SSD installed in a HP 8300 Tower with 2 500 gig hard drives in a RAID 1 mirror, so I thought it was because I had RAID enabled on the motherboard that it "didn't support" the drive. I tried switching over to AHCI using the following method:
Some systems will have the Windows operating system installed using RAID drivers including the
Intel Rapid Storage Technology. SSD drives typically perform better using AHCI drivers. There is in fact a way to
switch operation from either IDE / RAID to AHCI within Windows 10 without having to reinstall. Here are the steps:
- Click the Start Button and type cmd
- Right-click the result and select Run as administrator
- Type this command and press ENTER: bcdedit /set {current} safeboot minimal (ALT: bcdedit /set safeboot minimal)
- Restart the computer and enter BIOS Setup
- Change the SATA Operation mode to AHCI from either IDE or RAID
- Save changes and exit Setup and Windows will automatically boot to Safe Mode.
- Right-click the Windows Start Menu once more. Choose Command Prompt (Admin).
- Type this command and press ENTER: bcdedit /deletevalue {current} safeboot (ALT: bcdedit /deletevalue safeboot)
- Reboot once more and Windows will automatically start with AHCI drivers enabled.
I still got the same message in AHCI. So I left the problem alone for awhile and today (Dec 7 2018) I opened magician again and clicked on the "I" to see if there was a newer version. I had version 5.3.0 installed, but the software found and installed a newer version. After rebooting, it immediately recognized my drive and I was able to update to the newest (rvt02b6q) firmware. The weird thing is that the software still shows up as version 5.3.0. You might try "updating" magician because it fixed the firmware update issue for me. Now it shows my drive supported but it still only benchmarks about half the speed I should be getting. I'm assuming that's because I'm in RAID mode and not AHCI. Otherwise, so far I can't find any information on what the firmware changes or fixes.