When trying to reboot after the 20.04 update from 19.10. I'm dual booting windows 10.
I get a timeout error
timeout waiting for device dev-disk-by...
If have tried to follow this:
However I cant access a terminal and recovery mode isnt working.
Boot into a Live-USB Ubuntu OS and follow the steps outlined in the website you posted. That will get you a terminal to work from.
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