If your BIOS is configured to boot in UEFI mode, your motherboard (or laptop, if applicable) logo will be displayed. If so, press any key to boot to the Windows installation DVD.
Install Windows in UEFI modeĭepending on which Windows 11, 10, 8.1, 8, or 7 installation DVD you have, this message may appear. To configure your computer's BIOS to boot in UEFI mode, refer to our tutorial " Configure your computer's BIOS to boot in UEFI mode (firmware)" which will explain how to configure it with a step-by-step procedure. Source : Installation de Windows 7 sur un système UEFI. The x86 (32-bit) architecture is not supported by UEFI.
optional, but recommended : enable secure boot in motherboard or laptop BIOS. a motherboard supporting UEFI and it must be configured to boot in UEFI on the installation CD/DVD or the bootable USB key of Windows. To be able to install Windows in UEFI mode, you must have : Prerequisites to install Windows in UEFI mode Prerequisites to install Windows in UEFI modeġ. To learn more about UEFI, see our in-depth article on UEFI. There are many benefits to booting Windows in UEFI mode, including Secure Boot and faster boot. I have a good dump of the ROM and verified the health of the SPI flash thanks to tsialex guide with UEFITool.If you have a recent motherboard, it's very likely that it supports UEFI. Is Win7 known to write junk/certificates to NVRAM in the same way Win10 does, potentially resulting in a lost ROM? Is a possible solution, although it's intended use is for newer UEFI machines with a lack of int10? I already have a more competent Win10 machine. I am very stubborn (also foolish) and want to avoid OpenCore and Win10. There may be a correct sequence to reset the controllers PCI register post boot to defaults in 6 port mode, but I haven't found it, or I have the wrong sequence of pciset and bitflips in ABAR ram area. It is stable and functional after login, but I don't trust this hack. What I end up with is an almost 2 minutes boot time from an SSD and a constant higher than normal CPU usage from the System Interrupts (IIRC) service. Guess which ports are related to bay 3 & 4). 
I've tried to use grub to set the PCI registers and flip bits in the ABAR memory to set the SATA controller in combined mode (6 port controller instead of the default in CSM mode 4+2. I have a MP4,1->5,1 that I've tried to use AHCI in CSM mode in Win7 for some time.Īs you probably know, HDD bay 3 & 4 is tricky in this mode (Impossible with the MBR hack?).
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