Set up udev from scratch to provide NFS support for Parted Magic PXE

Ahoy friends.
For almost 2 months i was trying to get Parted Magic running properly on my PXE Server.
Unfortunately the Parted Magic system does not offer any NFS root support --> so booting from Network is extremely slow.
So after trying a lot of things, compiling own Kernel, generating own initramfs files i'm stuck.
I got the system running by using the Debian Live vmlinuz and initrd file and renaming the Parted Magic SQFS file to filesystem.squashfs.
And finally i'm able to boot!
But i can't move my mouse or use my keyboard.
VirtualBox_PXE%20(Legacy)_29_10_2019_18_48_13.png800i-600

Alright then. So i checked what Parted Magic needs to boot.
There are 2 more files, one called m.sqfs and fu.sqfs. They contain firmware and some udev script.
The original initrd does not offer any nfs support but some udev stuff, but i don't know how to include it in my new initrd, or how to get it running using another way.
I tried to replace the /lib folder and /etc/udev folder already by the debian-live ones, but it didn't work so well.
So what do i have to do to get my usb devices running properly again?
I also tried to include the folders of the m.sqfs and fu.sqfs file in the main filesystem.squashfs file but still having the same issue.

https://repo.openknogle.eu/grub/Virt...9_18_48_13.png

Here i got the init file from the Parted Magic initrd.

https://pastebin.com/LbbKRezX

And the Debian Live one. Any idea how to include things from Parted Magic there? Or any other solution how to get the hardware loaded?
I can provide further information if necessary.

https://pastebin.com/iL1w3u5e