Gigabyte GA-H77TN - Page 45

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CSM parameters
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Launch CSM
Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
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Enabled Enables UEFI CSM. (Default)
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Disabled Disables UEFI CSM and supports UEFI BIOS boot process only.
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
Allows you to select which type of operating system to boot.
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UEFI and Legacy Allows booting from operating systems that support legacy option ROM or UEFI op-
tion ROM. (Default)
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Legacy only Allows booting from operating systems that only support legacy Option ROM.
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UEFI only Allows booting from operating systems that only support UEFI Option ROM.
 Launch CSM is set to Enabled.
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Launch PXE OpROM policy
Allows you to select whether to enable the UEFI or legacy option ROM for the LAN controller.
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Do not launch Disables option ROM. (Default)
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Legacy only Enables legacy Option ROM only.
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UEFI only Enables UEFI Option ROM only.
Launch CSM is set to Enabled.
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Launch Storage OpROM policy
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.
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Do not launch Disables option ROM.
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Legacy Only Enables legacy option ROM only. (Default)
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UEFI Only Enables UEFI option ROM only.
 Launch CSM is set to Enabled.