Dual BIOS
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Appendix C Dual BIOS
Dual BIOS is a backup function that maintains normal operation of
the PXI system module when unexpected boot failure occurs
under the default BIOS. Dual BIOS consists of a main BIOS, a
backup BIOS, and an independent controller. In normal boot, the
main BIOS powers on and boots the system into the OS, moni-
tored by the independent controller. If the main BIOS malfunctions,
for example, as the result of corruption incurred by a failed update,
boot procedure is terminated abnormally. The backup BIOS is
then activated automatically to perform boot procedure. When
backup BIOS is activated, during BIOS power-on, notifications are
generated indicating that backup BIOS has been deployed. To
restore main BIOS function, contact technical support.
Summary of Contents for PXI-63982
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