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Legacy BIOS

Use this menu to configure system UEFI firmware execution environment preferences for supporting legacy OS and legacy Option ROM.

Note
When Secure Boot is enabled, the following message will be displayed in this menu:
Legacy BIOS is disabled due to secure boot is enabled.


Table 1. Legacy BIOS details
ItemOptionsDescription
Legacy BIOS

  • Enable (Default)

  • Disable

Enable/Disable the system UEFI firmware execution environment for supporting legacy OS and legacy Option ROM.

Rehook INT 19h

  • Enable

  • Disable (Default)

When this item is enabled, it prevents devices from taking control of the boot process.