This question already has an answer here:

My laptop which ran Fedora 20 fine until this morning is now stuck in emergency mode. I have not set a root password and I cannot proceed beyond the initial prompt. Attempting to continue in default mode (ctrl d) just returns me to the emergency boot prompt. How can I resolve this?

marked as duplicate by goldilocks, Anthon, Ramesh, chaos, Archemar Sep 27 '15 at 19:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Browse other questions tagged or ask your own question.