chenxiaolong

Switching between AHCI and RAID on the Dell XPS 15 (9560)

This guide likely applies to other models and, potentially, even laptops from other OEMs that have NVME drives. However, I've only tested this on my Dell XPS 15 (9560) with the OEM Windows installation from the Signature Edition model.

Switching from RAID to AHCI

Switching from RAID to AHCI is significantly simpler than switching from AHCI to RAID. All that's needed is a successful boot to Safe Mode.

1. To set the default boot mode to Safe Mode, use msconfig.exe or open an admin cmd/PowerShell window and run:

mlshvdv

var score = 0;
var penalty = 100; // Penalty can be fine-tuned.
var lastact = new Date();

function talk() {
    
    /* The smaller the distance, more time has to pass in order
     * to negate the score penalty cause{d,s}.
     */
    score -= (new Date() - lastact) * 0.55;