Article Number: 000151899
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.
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.
You can resolve this issue by returning the system to the UEFI boot mode.
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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-OneSee more
02 Jun 2021