Inspiron 14 5410 2-in-2 BIOS/UEFI Refuses Switching from RAID to AHCI

Hi

My thought (singular) was to try with no storage device attached, however the wisdom on the internet is....................................

You can switch the Inspiron 14 5410 2‑in‑1 from RAID (Intel RST) to AHCI without reinstalling Windows by forcing a Safe Mode boot, flipping the SATA mode in BIOS, then returning Windows to normal boot.

• This assumes the current Windows install was done in RAID/Intel RST mode and you want to keep it intact.

• Have a backup or at least a restore point/image in case something goes sideways.

• You’ll need an admin account in Windows.

Step 1 – Prepare Windows for AHCI

1. Boot into Windows normally (still in RAID mode).

2. Open an elevated Command Prompt: right‑click Start → “Windows Terminal (Admin)” or “Command Prompt (Admin)”.

3. Run:

   text

   bcdedit /set {current} safeboot minimal

   If that errors, use:

   text

   bcdedit /set safeboot minimal

   This tells Windows to boot into Safe Mode on the next restart, which loads generic storage drivers and prevents a 0x7B BSOD after the SATA mode change.

4. Do not reboot into Windows yet; you’ll go straight into BIOS next.

Step 2 – Change BIOS from RAID to AHCI

1. Reboot the laptop and tap F2 to enter BIOS/UEFI Setup on the Inspiron.

2. In BIOS, find the SATA Operation / Storage section (on Dell it is usually under “Storage” or “Advanced”).

3. Change from RAID On / Intel RST to AHCI.

4. Save changes and exit (usually F10).

The system should now boot and go straight into Windows Safe Mode with AHCI active.

Step 3 – Return Windows to normal boot

1. Once Safe Mode has successfully loaded, log in.

2. Open an elevated Command Prompt again.

3. Run:

   text

   bcdedit /deletevalue {current} safeboot

   If you used the alternate syntax earlier, use:

   text

   bcdedit /deletevalue safeboot

   This removes the forced Safe Mode setting.

4. Reboot normally. Windows should now boot in full mode using AHCI and install the AHCI driver stack properly on first normal boot.

If Windows fails to boot

• If you hit an INACCESSIBLE_BOOT_DEVICE BSOD, go back into BIOS (F2) and temporarily switch SATA mode back to RAID; Windows should boot again and you can re‑check the bcdedit step.

• You can also enable the Microsoft StorAHCI service via registry (set Start to 0 under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci) before doing the BIOS flip, but the Safe Mode + bcdedit method above is usually sufficient.

@anne_droid​, You did not understand my question. Why won't the BIOS of the laptop let me change the controller setting from RAID to AHCI? How can I do that? Whatever may have been going on with Windows is irrelevant. I wiped the drive using secure erase. Windows no longer exists on the drive.

Fair Enough.