When I tried to start my computer, it boots in emergency mode and shows some problem. I don't know about these problem. if I run 'exit' command that again brings back the emergency mode. This is shown by system in first
I had the same problem last night and I fixed it using the following steps:
Before starting it would be safe to backup all your data, though I didn't and came out of the problem without losing anything.
First you must boot into your system using a live cd/usb and make sure you have all other devices unmounted from the system.
sudo e2fsck -C0 -p -f -v /dev/<partition_id>
Repeat step 2. for each and every partition you have until you find the corrupted one.
Upon finding the problem, it will show you something like this:
Inodes that were part of a corrupted orphan linked list found.
Home: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY. (i.e., without -a or -p options)
sudo e2fsck -f -y -v /dev/<corrupted_partition_id>
Press 'y' on every prompt to fix them.
Reboot after completion of the full recovery process.
For a detailed information you may look into this link