Raspberry Pi Installation Help?

[syaochan]

Hi to everyone, sorry if I post in this thread but as a new user I cannot open a new thread.
I'm attempting to have xbian boot from USB SSD on an Raspberry Pi 4, but failed until now.
What I tried:
- Flash xbian image directly to SSD: boot stops at "waiting for root..." and then I get recovery console. Tried with /dev/sda2 and root device UUID in cmdline.txt
- Flash xbian to sdcard and then use xbian copier to copy to SSD: same results as above after removing sdcard and modifying cmdline.txt with correct SSD data
What can I do?