I slipstreamed using this https://www.win-raid.com/t4960f52-So...mainboard.html
and this guide https://forums.anandtech.com/threads...500572/page-11
I copied dism.exe, boot.wim and install.wim into a folder "7USB" in C: drive.
Then made two subfolders "boot" and "install" in them.
Copied those files to the folder and gone into with Command Prompt.
Also, extracted the driver archive contents to a folder called x570 in 7USB. Doesn't matter if it's in subfolders, because DISM picks it up as inf files and finds them automatically.
DISM /mount-wim /wimfile:boot.wim /index:2 /mountdir:c:\7USB\boot
DISM /image:c:\7USB\boot /add-driver /driver:x570\ /recurse
(you only needed /forceunsigned back in old days as 64-bit win7 requires driver signing, these drivers are modded but SHA-1 signed so Win7 does not complain.)
Then to finish the wim,
DISM /unmount-wim /mountdir:c:\7USB\boot /commit
And same for install.wim, except i only wanted Ultimate, so i did
DISM /mount-wim /wimfile:install.wim /index:4 /mountdir:c:\7USB\install
DISM /image:c:\7usb\install /add-driver /driver:X570\ /recurse
DISM /unmount-wim /mountdir:c:/7USB/install /commit
If everything went right, you should get something like '1 - .... The driver installation completed successfully.' etc on each .inf file it found for your USB drivers.
May be off-topic now, but i removed any other editions than Ultimate, which i slipstreamed, using this (thanks to this https://superuser.com/questions/1065...-windows-7-iso
Dism /Export-Image /SourceImageFile:C:\7usb\install.wim /SourceIndex:4 /DestinationImageFile:C:\7usb\install4.wim /DestinationName:"Windows 7 Ultimate"
And deleted the original install.wim, and renamed the install4.wim to install.wim. Copied both into my Win7 USB pendrive in 'sources' folder, which was a Windows 7 multi-edition Polish ISO, updated already-slipstreamed from August 2017. I formatted in MBR in Rufus as BIOS (Or UEFI-CSM).
Booted to pendrive and installed using keyboard and mouse on back USB 3.0 ports just fine, pendrive included on back too.
Performance once installing my LAN driver for my AX370-Gaming 3 and Radeon 19.7.2 for my RX 470 on a R7 3700X was stellar, about 300+ fps in CS:Go on 128tick with max settings, which i was impressed how smooth it was vs. 10 on default settings (anyone who played games like CS:Go know that max settings are not that fluid, so seeing this, along with very nice mouse input, even with m_rawinput=0 was great.)
Oh, and i should mention, GPT install can be done in CSM, but i converted my SSD to MBR to install in legacy mode. No performance loss due to that, low CPU usage and fast SSD copying as always.
Here's my terrible imgur album of this when i had 7: https://imgur.com/gallery/ZgM3B72
Now i use Windows 10 Oct 2018 LTSC 2019, since i need it for my Gigabyte 1gb/s + wifi/bt5 pci-e card so i can use wifi in a wifi-only home i moved back after the holidays, but the slipstreaming of this is just a few command lines and you can always google, happy to help.