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No boot device found when you change the Boot sequence to Legacy mode

Summary: This article addresses a "No boot device found" issue affecting certain XPS, Latitude, Precision and Optiplex when changing the Boot Sequence to Legacy mode in the BIOS setup menu.

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Article Content


Symptoms

No Boot Device Found

XPS 12-9250, 12-7275, Latitude 3490/3590, 7280, 7480, 5280, 5480, 5580, Precision 3520, Optiplex 7760, 7460, 7060, 5260, 5060, 3060, 5060 AIO (and later systems) report "No boot device found" when you change the Boot Sequence to Legacy mode in BIOS setup menu.

SLN301692_en_US__1No-boot-device-found

These specific systems are based on the 7th generation Kaby lake processor (and above) and are designed to boot exclusively in the Unified Extensible Firmware Interface (UEFI) boot environment. As a result, if legacy boot mode is selected, the system will not boot.

NOTE: This situation applies to any system from the Kaby lake 7th generation processor forward and is not limited to the systems that this article was originally based on.
NOTE: Later systems may not include an option for Legacy Mode. Proceed to troubleshoot the No Boot Device normally as this article only applies to systems that provide the Legacy Mode option.


Cause

 

Resolution

Return the BIOS to UEFI Boot

You can resolve this issue by returning the system to the UEFI boot mode.

  1. From a power off state, power the system on and press F2 to boot into the BIOS setup menu.
  2. Select "Boot sequence"
  3. Change the option from "Legacy" to "UEFI", then select "Apply" in the right lower corner.

    SLN301692_en_US__2UEFI-1
 
  • Select "Advance Boot options" and disable "Enable Legacy Operation ROMs", then select "Apply" in the right lower corner.

    SLN301692_en_US__3UEFI-2
 
  • Select "Secure Boot", then "Secure Boot Enable".
  • Change the option from "Disabled to Enabled", then select "Apply" in the right lower corner.

    SLN301692_en_US__4UEFI-3
 
  • Select "Exit" in the right lower corner and wait for the system to reboot.
 

Additional Information:

 
 

Out of Warranty support Out of warranty? No problem. Browse to the Dell.com/support website and enter your Dell Service Tag and view our offers.

NOTE: Offers are only available for US, Canada, UK, France, Germany, and China personal computer customers. Server and Storage not applicable.

Article Properties


Affected Product

Latitude 5280/5288, Latitude 7280, Latitude 3490, Latitude 5480/5488, Latitude 7480, Latitude 3590, Latitude 5580, Latitude 7275, OptiPlex 3060, OptiPlex 5060, OptiPlex 5260 All-In-One, OptiPlex 7060, OptiPlex 7460 All-In-OneLatitude 5280/5288, Latitude 7280, Latitude 3490, Latitude 5480/5488, Latitude 7480, Latitude 3590, Latitude 5580, Latitude 7275, OptiPlex 3060, OptiPlex 5060, OptiPlex 5260 All-In-One, OptiPlex 7060, OptiPlex 7460 All-In-One, OptiPlex 7760 All-In-One, Precision 3520, XPS 12 9250See more

Last Published Date

02 Jun 2021

Version

4

Article Type

Solution