Recently a colleague had to spend some time looking for a way to get out of the UEFI fast-boot mode on a customers brand new Asus laptop that needed some adjustments in the BIOS settings(this fast-boot mode skips through the BIOS). The method was about what the article describes above, something that even Asus' support was unaware of. Good times...
i5-3570K at 4.1 GHz Turbo + Thermalright HR-02 Macho, Sapphire HD 7950 Dual-X, MSI Z77A-G45, 32GB RAM, Fractal Design Define R4. Plextor M5 Pro 256GB, Samsung 840 250GB, Seagate 4TB (ST4000DM000) for quiet storage, Seasonic P-460FL, ASUS Xonar DX, Intel CT NIC.