Skylake platform can not install Win7 system through USB interface

Intel will launch Broadwell, Skylake two-generation 14nm processor in 2015, the former can use 9 series chipset, Skylake upgrade to LGA1151 slot, need to match with new 100 series chip Group, but the initial Skylake-S can not be multiplied, so the Q2 quarter will be mixed this year. The Skylake generation will support DDR4, and the 100 series chipset upgrade is also very attractive, but the new platform has a big pit to pay attention to — — Skylake platform can not install Windows 7 system through USB interface.

This question doesn't sound serious, but it can be quite cumbersome to use. Skylake generation Intel will remove the EHCI master and support XHCI master, but the Windows 7 system does not natively support XHCI master. It doesn't matter if you don't understand the terms EHCI or XHCI. You only need to know the impact of this thing. —— Without EHCI, the USB interface cannot be recognized when the Windows 7 system is installed on the Skylake platform.

Fur Further, if you plan to continue using Windows 7 on the Skylake platform, you will encounter a problem when installing the system —— cannot be installed via USB hard drive, nor can it be installed via USB drive . If you are lucky, the motherboard will provide a PS/2 mouse and keyboard interface, but the problem is that you can't use the mouse when you pick up the keyboard. You can't use the keyboard after you pick up the mouse.

This problem is also a test for motherboard manufacturers. If you can't change Intel's idea, you can only add extra USB chips, but the cost of this chip is about 2 dollars. This pair of low-end motherboards It is very difficult to accept. Even if more PS2 interfaces are provided, there are also cost issues, and the PS2 interface is not mainstream. It is a waste of two PS2 interfaces to install the system.

This change to Skylake only affects Windows 7 systems. Windows 8 and later systems will natively support XHCI mastering. The USB interface is fine when the system is installed.

This is Intel's idea. After all, Windows 7 has been released for a long time. Intel's later changes to hardware specifications are not controlled by Microsoft, but Microsoft is obviously one of the biggest beneficiaries. If there is no good solution, This will obviously affect the installation and use of the Windows 7 system. Microsoft is suffering from the high occupancy rate of the Windows 7 system and the slow upgrade of the new system.

This is the end of the story: unless Microsoft's Windows 10 is a hit, everyone has given up Windows 7 system, otherwise Intel's next-generation platform to learn to install Windows 7 system will be a technical problem, with Ghost recovery Direct hard disk installation or other systems to install the system and then load the new platform. Anyway, the majority of otaku can have more reasons to stay in the goddess home installed computer — — this problem is very complicated, I have to take a while, you see the sky is dark...
< The above EHCI issue is only part of the PPT forum. The improvement and impact of Skylake are:

· Skylake will promote EIST (Intel's dynamic energy-saving FM technology) to the memory, that is It is said that the memory frequency is also dynamic. When booting, the MRC will run twice to capture the high and low points of the memory frequency. After entering the system, the OS will adjust the memory frequency with the CPU frequency. It sounds great, but the technology is limited to the NB (notebook) platform.

· Skylake's Southbridge PCI channel has finally been upgraded from the previous 8 PCI 2.0 to 20 PCI-E 3.0, and will support 3 PCI-E devices at the same time, now on the platform M.2 And SATA Express is shared with PCI-E channels.

· Skylake will use eSPI instead of LPC, so interfaces such as TPM, SIO/EC/BMC, LPC debug/post 80 Card will be affected.

· Skylake's VR12.5 power supply system will be changed to the IMVP8 (Intel Mobile Voltage Positioning) specification.

This can be said more. I already know that Intel will give up the FIVR integrated voltage regulator module on Skylake. Haswell integrated this function, but it has increased the complexity of the CPU and affected it. The power consumption, so Intel has given this package to the motherboard manufacturer, the power supply requirements on the next generation of the host have improved, and we must inevitably fight the power supply phase.