[Gllug] Ubuntu LiveCD persistent home

[James Goldwater]

A friend of mine 300 miles away at university was 'accidentally surfing 
porn' using IE and has a nasty infection as a result.  I've tried 
talking her through cleaning her computer but it seems pretty incurable 
without physical access... therefore, a linux-advocacy idea has popped 
into mind...

Ubuntu seems to do everything she would need, and is piss-easy to use.  
A Live CD would be perfect, if I could get a persistent home on a USB 
pendrive working. 

I've never done this before: I've tried adding home=/dev/sda1 and 
home=/mnt/sda1 to the boot options: neither works.  Is there some magic 
incantation I can use?  Ubuntu live-cd seems to be a derivative of 
morphix, and there's mention of a morphix.img loopback home directory in 
the grub menus, but I am, to tell the truth, rather confused.

Any ideas/completely obvious google queries I could have tried/howtos?

Cheers

James
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