Emergency Mode
How to get your Raspberry Pi out of Emergency Mode, and booting again:
Take your SD card out of your Pi and mount it on another computer.
Open the boot partition, and the file cmdline.txt
Add init=/bin/shto the end of the line and save the file
Unmount, place back into your Pi, and power up your Pi. Your Pi will boot into a minimum shell environment as root.
At this point, you need to mount the actual filesystem, but without loading fstab. To do that, enter mount -o remount,rw / –target / and hit enter
Now, edit your fstab file by entering vi /etc/fstab and hitting enter
After you’ve made your edits, exit the file, then at the command line, type exit. The system will panic, but it’s fine.
Remove the SD card from your Pi and put it back into the other computer.
Open the boot partition, and the file cmdline.txt
Remove init=/bin/shfrom the end of the line and save the file
Unmount the SD card, place it back into your Pi, and power up your Pi. You should be good to go now.
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