REBOOT AND SELECT PROPER BOOT DEVICE | Wrong boot device

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Systems & Devices

Canonical

/systems/bios-uefi/error-codes/reboot-and-select-proper-boot-device/

Last Updated

Feb 27, 2026

Summary

Firmware cannot find a bootable device from the current boot order selection.

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What This Code Means

This message indicates the system did not find a bootable OS on the selected device and is prompting you to choose a proper boot device. It is commonly caused by boot order changes, missing drives, or non-bootable media.

Where Users Usually See This Code

After adding/removing drives or USB devices
After BIOS/UEFI reset to defaults

Why This Code Appears

Boot order points to an empty/non-bootable device
System drive is not detected
Boot configuration is missing or corrupted

What Typically Happens Next

The system will not boot until boot order/device is corrected

What This Code Is Not

It is not an application error
It is not a Windows Update code

Troubleshooting Checklist

□ Remove external media and retry
□ Enter BIOS/UEFI and select the correct boot drive
□ Check drive detection and cables (desktop systems)

Notes And Edge Cases

After firmware updates/resets, Secure Boot and boot mode changes can alter boot behavior.

Related Codes

8 links

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