E300-9A-4CN10P User's Manual
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Appendix D
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 to avoid possible boot failure. The UEFI BIOS recovery doesn't support
the Ctrl+home function.
D.1 Overview
initialization to allow the UEFI OS loader, which is stored in the add-on card, to boot the
D.2 Recovering the UEFI BIOS Image
BIOS image). The boot block contains critical BIOS codes, including memory detection and
completed, the main BIOS code will continue with system initialization and bootup.
Note 1: Follow the BIOS recovery instructions below for BIOS recovery when the main
BIOS boot crashes.
Note 2: When the BIOS boot block crashes, you will need to follow the procedures to
make a Returned Merchandise Authorization (RMA) request. Also, you may use the
Supermicro Update Manager (SUM) Out-of-Band (OOB) (https://www.supermicro.com.
D.3 Recovering the BIOS Block with a USB Device
This feature allows the user to recover a BIOS image using a USB-attached device without
ROM/RW device can be used for this purpose. However, a USB Hard Disk drive cannot be
used for BIOS recovery at this time.
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