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Select UEFI Boot Mode or Legacy BIOS Boot Mode (BIOS) - Oracle® X4 Series Servers Administration Guide
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uefi - If USB is not listed in BIOS as a boot option, does that mean the machine can't boot from USB? - Super User
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Can boot from SSD/HDD via USB, but not internal (SATA) on x86 laptop - Home Assistant OS - Home Assistant Community
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