Author: parsec
Subject: Z77 Extreme4 SM951 UEFI BIOS
Posted: 20 Apr 2016 at 12:02am
The P2.90M UEFI version for the Z77 Extreme4 board is available in the Beta Zone area on this board's download page:
http://www.asrock.com/mb/Intel/Z77%20Extreme4/?cat=Beta
I tried the USA link and the China link, from the USA, and both worked fine, I have two copies of this UEFI file, Z77 Extreme4(P2.90M)ROM.
I've had no problem using the standard UEFI files for this board, when I installed Windows in UEFI booting mode. That causes the EFI bootloader to be used, which is required for PCIe SSDs. I must say that was using standard SATA SSDs.
Is the point of using the modified UEFI, with the version 13 Intel Option ROM, that the ASRock UEFI P2.90M does not work?
If you are installing Windows with CSM enabled, and the Launch Storage OpROM Policy option set to Legacy Only, and the installation does not work, that is why.
Also, Windows 7 cannot be installed to use the EFI bootloader without a modification to the Win 7 installation package. The EFI bootloader is not in the correct folder, a known bug with Win 7.
Subject: Z77 Extreme4 SM951 UEFI BIOS
Posted: 20 Apr 2016 at 12:02am
The P2.90M UEFI version for the Z77 Extreme4 board is available in the Beta Zone area on this board's download page:
http://www.asrock.com/mb/Intel/Z77%20Extreme4/?cat=Beta
I tried the USA link and the China link, from the USA, and both worked fine, I have two copies of this UEFI file, Z77 Extreme4(P2.90M)ROM.
I've had no problem using the standard UEFI files for this board, when I installed Windows in UEFI booting mode. That causes the EFI bootloader to be used, which is required for PCIe SSDs. I must say that was using standard SATA SSDs.
Is the point of using the modified UEFI, with the version 13 Intel Option ROM, that the ASRock UEFI P2.90M does not work?
If you are installing Windows with CSM enabled, and the Launch Storage OpROM Policy option set to Legacy Only, and the installation does not work, that is why.
Also, Windows 7 cannot be installed to use the EFI bootloader without a modification to the Win 7 installation package. The EFI bootloader is not in the correct folder, a known bug with Win 7.