How do I disable UEFI and enable legacy CSM boot support?

Look for a setting called “Boot Mode”, “UEFI Boot”, “Launch CSM” or whatever else it may be called, change the boot mode from UEFI to Legacy/CSM: disable the UEFI Boot option and enable CSM Boot support. Save your changes and exit UEFI Setup.

How do I change my BIOS to Legacy?

Select UEFI Boot Mode or Legacy BIOS Boot Mode (BIOS)

1. Access the BIOS Setup Utility.
2. From the BIOS Main menu screen, select Boot.
3. From the Boot screen, select UEFI/BIOS Boot Mode, and press Enter.
4. Use the up and down arrows to select Legacy BIOS Boot Mode or UEFI Boot Mode, and then press Enter.

Can I change from UEFI to Legacy?

Once you’re finally inside your Setup Menu, access the Boot Menu and look for an option named Boot Mode (or similar). Once you see it, select it and press Enter to access the hidden menu, then select Legacy from the available options.

Is UEFI faster than Legacy?

Nowadays, UEFI gradually replaces the traditional BIOS on most modern PCs as it includes more security features than the legacy BIOS mode and also boots faster than Legacy systems. If your computer supports UEFI firmware, you should convert MBR disk to GPT disk to use UEFI boot instead of BIOS.

How do I enable Legacy mode in ASUS BIOS?

In Legacy mode, you only can select items by using Arrow Keys and Enter Key.

1. Press Hotkey[F9].
2. Confirm whether to load the BIOS optimized defaults, select Yes and press [Enter]②.
3. Press Hotkey[F10]③.
4. Confirm whether to save and exit the BIOS configuration, select Yes and press [Enter]④.

How do I disable secure boot in legacy BIOS?

Find the Secure Boot setting in your BIOS menu. If possible, set it to Disabled. This option is usually in either the Security tab, the Boot tab, or the Authentication tab. Save changes and exit.