How to mount android 9 system?

[andrew wu]

Dear all

for android 9, google forces the system-as-root,So in the kernel boot stage,mounting ramdisk is different.

I can not find where the system is mounted and so the rootfs is ready.

Would you tell me the detail process flow about verifing system verity and mount the ramdisk in system.img?

If here has similar case and have clear solution,please let me know.

looking forward to your professional advice.