Latitude XT3 will not output to a display attached to the E/Port docking station, using either VGA or DVI ports until the operating system loads. This can inhibit PreBoot credential authentication if the LCD is closed. Solution: This issue is fixed with A06 BIOS release.
Root cause is due to the USB key was created with a floppy(00H) format that emulates HDD(80H). Upon boot the BIOS is unable to find 80H at MBR partition entry, so it shows that the partition table is invalid.
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