Resolving the Inaccessible Boot Device Error

Objective

This guide provides a solution for the "inaccessible boot device" error that may occur after changing the storage controller mode or upgrading/replacing your SSD. It is particularly useful if you've switched between RAID and AHCI modes on your PC.

Problem Description

• Platform: Demonstration using a Dell PC, but applicable to Lenovo, HP, or other models with some modifications.
• Specific Error: Inaccessible boot device error leading to a blue screen upon the change from SATA mode set to RAID to AHCI.

Steps to Resolve the Issue

1. Identify the Problem:

   • Occurs when altering SATA mode in BIOS from RAID to AHCI.
   • No option to disable Intel Rapid Storage Technology (RST) in Windows.

2. Booting into Safe Mode:

   • Attempt to boot; after 2-3 automatic failures, Windows should lead to the recovery environment.
   • Alternative: Press F8 or Shift + F8 after BIOS screen for additional boot options.

3. Activate Safe Mode:

   • Choose the Safe Mode option from the recovery environment.

4. Driver Installation:

   • Windows will attempt to identify and install necessary AHCI drivers in Safe Mode.
   • Verification:
     • Open Device Manager.
     • Ensure that IDE ATA/ATAPI controllers list includes the AHCI driver.

5. Final Steps:

   • Restart the system normally.
   • If the blue screen persists, double-check BIOS settings and confirm all drivers are updated.

Additional Tips

• Verify BIOS settings if issues persist.
• Update system drivers regularly.

Conclusion

Following these steps should resolve the inaccessible boot device error. If you encounter any issues or need an advanced guide, more support can be provided. Please engage through comments and subscribe for more useful content.

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