Okay, that was sad :(
My Ubuntu Touch device, a Nexus 4, suddenly behave strangely. It suddenly restarted, and continuously rebooting. Practically becomes unusable. It seems to become worse as it can't even boot for long, only reaching the Google logo before turning off again (and not restarting). I booted into recovery mode, wiped the cache partition, but it didn't solve the problem. I then planned for a factory reset, but first, I need to recover my data first. I found an instruction on TechGlen
, but sadly it doesn't clearly tell us how to get the location of the user data that needs to be mounted so that we can backup the contents. After some more googling, I got the clue from Stack Exchange
. So, here's how to do it, as a note for myself, or in case someone needs it.