Xbian hangs during boot saying "Switching root"

[mk01]

with cmdline I meant /boot/cmdline.txt. you was changing parameters there already.

when you do the 2) and you get prompt, run "nano /etc/fstab" and edit the line with your RILHAS-SRV record - add "nobootwait" parameter to it. so it would look like:

UUID=5916829a-80bd-4add-8884-cb06ced01442 /RILHAS-SRV ext3 defaults,exec,errors=remount-ro,nobootwait 0 0

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if you can't pass the sd to your virtualbox linux, you will not able to access the filesystem.

but with the init=/bin/bash in cmdline.txt you should get the prompt (as with ssh) and be able to perform commands. at least those which we will tell you - if you are not skilled with linux.