Supermicro H11DSi-NT - Appendix C UEFI BIOS Recovery; Recovering the UEFI BIOS Image; Recovering the BIOS Block with a USB Device

H11DSi / H11DSi-NT User's Manual
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Appendix C
UEFI BIOS Recovery
Warning: Do not upgrade the BIOS unless your system has a BIOS-related issue. Flashing
the wrong BIOS can cause irreparable damage to the system. In no event shall Supermicro
be liable for direct, indirect, special, incidental, or consequential damages arising from a BIOS
update. If you need to update the BIOS, do not shut down or reset the system while the BIOS
is updating. Doing so may cause a boot failure.
C.1 Overview
The Unied Extensible Firmware Interface (UEFI) provides a software-based interface
between the operating system and the platform rmware in the pre-boot environment.
The UEFI specication supports an architecture-independent mechanism for add-on card
initialization to allow the UEFI OS loader, which is stored in the add-on card, to boot the
system. The UEFI offers clean, hands-off control to a computer system at bootup.
C.2 Recovering the UEFI BIOS Image
A UEFI BIOS ash chip consists of a recovery BIOS block and a main BIOS block (a main
BIOS image). The boot block contains critical BIOS codes, including memory detection and
recovery codes for the user to ash a new BIOS image if the original main BIOS image
is corrupted. When the system power is on, the boot block codes execute rst. Once it is
completed, the main BIOS code will continue with system initialization and bootup.
C.3 Recovering the BIOS Block with a USB Device
If the BIOS le is corrupted and the system is not able to boot up, this feature will allow you
to recover the BIOS image using a USB-attached device. A USB ash drive or a USB CD/
DVD ROM drive may be used for this purpose. Please note that a USB hard disk drive is
NOT supported. Follow the procedures below to recover the BIOS.