Help [Solved] Nexus 5x flashing failed

[Kiroe]

Hello guys, I wanted to root my Nexus 5X from LG.
I think I finally did it, but my system didnt start anymore. I waited about 15 minutes or longer it just showed the google animation (the four "dancing" colours) .
TWRP says that it failed to mount /system (invalid argument)

I tried to flash my nexus 5x with the official .zip (bullhead-nbd90w-factory-d2f11c5f.zip)
Here is my Terminal Output, I am using linux: (I run sudo ./flash_all.sh)
http://pastebin.com/QkWtTYvw

Do you know how to fix it, or have any idea ?
It would be great!

When you need any information please ask me

 

[Kiroe]

I fixed it:

I moved out the system.img of the image-bullhead-nbd90w.zip and installed it manualy:
"sudo fastboot flash system system.img"
after that I run flash_all.sh
the error message that it cant find system.img is ok
after finishing you can reboot your device and after about 2 -3 minutes the android first start programm apeared

Thank you for all the great support....