How to boot from a 3 TB HDD in D945GSEJT?

Hi guys,

I have installed ubuntu server on a 3 TB HDD on my Intel D845GSEJT motherboard, but it will not boot.

I have read, that I need to enable "UEFI boot" in the BIOS, but I can't find it.

On Desktop Boards — Troubleshooting disk drive problems

it says:

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Enabling support for 2 terabyte drives
If you are using a hard drive 2 terabytes or greater
in capacity, you must enable UEFI (Unified Extended Firmware Interface) in order
for your system to recognize the drive.

To enable UEFI:

1. During boot, enter the BIOS setup by pressing F2.
2. Go to the Boot menu.
3. Set UEFI Boot to Enable.
4. Press F10 to Save and Exit.

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I don't see that option in the BIOS. I have updated to the latest BIOS version (45), and the D945GSEJT is on the "This applies to" list at the bottom of the support page.

Any help?

Best regards,

Frank