Precision 5560 and XPS 9510 Unable to Boot from USB in Pre-OS Environment

Summary: What to do when a Precision 5560 or XPS 9510 fail to boot from external USB devices in the Pre-OS environment.

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Symptoms

Precision 5560 and XPS 9510 computers with a CFI installed Operating System fail to boot to external USB devices in the Pre-OS environment.

Cause

The BIOS setup selection "Enable USB Boot support" is automatically disabled when the Operating System is a CFI order.

Resolution

Follow the steps below to boot to an external USB device in the Pre-Boot Environment:
  1. Boot to the setup menu by pressing F2 while turning on.
  2. Click Integrated Devices and Enable USB Boot Support (Figure 1).
    Integrated Devices
    Figure 1: Integrated Devices
  3. Click Apply Changes and exit.

Affected Products

Precision 5560, XPS 15 9510
Article Properties
Article Number: 000200933
Article Type: Solution
Last Modified: 24 Apr 2025
Version:  6
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