Changing from RAID mode to SATA AHCI mode

[Marcos Baras]

Hi everybody!

I recently installed Windows 11 on a Dell Precision T5810 without realizing that the SATA ports were configured in RAID mode in the BIOS. I should point out that, although I have two SATA drives in this computer, they both operate independently: the RAID controller ROM is activated at boot, but that's all.
The system works perfectly, but now the Device Manager shows one SATA AHCI port marked with a yellow exclamation point. After asking Copilot, they detailed a way to fix it. I should boot Windows in Safe Mode, then change the RAID mode to AHCI in the BIOS, boot back into Safe Mode (so that Windows activates the AHCI driver), and then restart in normal mode.
Is this method Copilot suggested safe? If it refuses to boot after following these steps, would it be possible to repair the system without having to reinstall Windows from scratch?

Thanks in advance

 

[HardReset]

Switching SATA modes may cause boot problems and probably performance difference between IDE and AHCI are small anyway. In case of boot problems, probably Windows could repair your boot problems. And if you just installed Windows, reinstalling it should not be much work.

In other words, performance gain achieved will be small and it something goes wrong, it's not that big deal anyway. Small risk small reward.

 

[Aolish]

To be honest, even though the interface is on raid (depending on your setup), I just leave raid as the interface as is. The dell laptops that we work with at my job always end up resetting its settings back to default resulting in unbootable systems because I use to set them previously to AHCI rather than raid. Ever since then I just left the Dell default setting to raid.