Skip to main content
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Enjoy members-only rewards and discounts
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.

Switching SATA Modes: AHCI to RAID on Dell Data Security Windows Computers

Summary: Learn how to switch SATA modes from AHCI to RAID on Dell Data Security Windows computers. Follow step-by-step guidance for a smooth transition.

This article may have been automatically translated. If you have any feedback regarding its quality, please let us know using the form at the bottom of this page.

Article Content


Affected Products:

  • Dell Encryption Enterprise
  • Dell Encryption Personal
  • Dell Data Protection | Enterprise Edition
  • Dell Data Protection | Personal Edition

Note: Dell Encryption does not support Intel VMD with Xeon class processors.

To change the SATA operation mode from AHCI to RAID:

Warning: The next step is a Windows Registry edit:
  1. Depending on whether AHCI or RAID SATA mode is required, the following registry settings should be enabled or disabled:

iastor = 0 (these correlates to the Intel RAID, 3 means off, 0 means on)
iastorv start = 0 (these correlates to Windows RAID, 3 means off, 0 means on)
iaVROC start = 0 (these correlate to the Intel VMD / Intel VROC drivers, 3 means off, 0 means on)
StorAHCI start = 0 (these correlate to the Microsoft AHCI drivers, 3 means off, 0 means on)
  1. After changing the registry setting, open an elevated command prompt and run command bcdedit /set {current} safeboot minimal.

safeboot minimal
Figure 1: (English Only) Run command bcdedit /set {current} safeboot minimal

  1. Reboot the computer.
  2. On reboot, enter BIOS by pressing F2.
Note: The hardware vendor may alter BIOS access commands. Consult your hardware vendor for the proper function command.
  1. In BIOS, modify SATA Operation to AHCI or RAID (depending on the requirement).
  2. To disable Intel VMD, find the appropriate technology flag within your BIOS. This may be called Intel VMD, Intel VROC, or may have another similar name. Reference your manufacturer’s documentation for any clarifications that may be needed.
Note: SATA Operation may be nested within submenus of BIOS. Consult your model's hardware manual for more information.
  1. Exit the BIOS and restart the computer. Windows automatically boots into safe mode and update the required driver.
  2. Still in safe mode, open another command prompt and run command Bcdedit /deletevalue {current} safeboot.

Run command Bcdedit /deletevalue {current} safeboot
Figure 2: (English Only) Run command Bcdedit /deletevalue {current} safeboot

  1. Restart and allow Windows to start.
Note: If system data encryption (SDE) is enabled, an SDE recovery might be required after switching from one mode to the other, as per the recovery steps that are detailed in the Recovery Guide on, or reference How to Run the Dell Encryption Enterprise / Dell Encryption Personal Recovery Bundle.

To contact support, reference Dell Data Security International Support Phone Numbers.
Go to TechDirect to generate a technical support request online.
For additional insights and resources, join the Dell Security Community Forum.

Article Properties

Affected Product

Dell Encryption

Last Published Date

06 May 2024



Article Type

How To