Newer Dell Systems Unable to Boot to Internal Boot Device in Legacy Boot Mode

Summary: This article provides more information about newer Dell systems, such as the Latitude XX90 series laptops, that are unable to boot to internal boot devices when in Legacy boot mode.

Article Content


Symptoms

Newer Dell systems, such as the Latitude XX90 series laptops are unable to boot to internal boot devices when in Legacy boot mode.

Cause

Legacy Boot mode and internal boot devices

With the Boot option set to Legacy boot mode on newer series of Dell systems, you will be unable to boot to internal boot devices (including HDD, SSD, or eMMC storage devices). This issue may also occur after installing the operating system in Legacy Boot mode. A message to this affect appears in the system BIOS under the General/Boot Sequence settings (Figure 1):

Boot sequence settings
Figure 1: Boot Sequence settings

Resolution

Use UEFI instead of Legacy boot mode on newer series Dell systems to boot to internal boot device.

If the message highlighted above is missing from the Boot Sequence page, or if the Legacy External Devices setting is missing from the Boot Sequence settings, then update the BIOS to the latest available version at Dell Support / Drivers & Downloads. Select BIOS under the drop-down Category menu and download and install the latest available BIOS update. The Dell system must be imaged in UEFI mode unless booting to an external boot device.

 

Note: UEFI mode requires a 64-bit operating system be installed (ex, Windows 10 Pro 64-bit, Windows 10 Home 64-bit, Ubuntu 16.04 SP1 LTS 64-bit).

Article Properties


Affected Product

Latitude, Vostro, XPS, Fixed Workstations, Latitude 5290 2-in-1, Latitude 5290, Latitude 7290, Latitude 3390 2-in-1, Latitude 7390 2-in-1, Latitude 7390, Latitude 3490, Latitude 5490, Latitude 7490, Latitude 3590, Latitude 5590

Last Published Date

21 Feb 2021

Version

5

Article Type

Solution

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