I encountered a problem yesterday , my raspberrypi has entered emergency mode after I plug out the power cord directly , I searched in the internet , it said need to check the file system because of power loss , I used ckfs and e2fsck command to fix the partition , but it still doesn't work , I found that it shows "a start job is running for dev-sda1.device " and timed out . I searched the problems , it said that
解決辦法：
原因：沒有找到該swap分區ID 導致的。所以延遲90s
方法：lsblk -f
sda3 swap a7fa69a8-31bd-448c-98de-55de4aa6f06a
顯示出來自己的SWAP ID 拷貝之
然後編輯 /etc/fstab 中的swap 的UUID 值
保存推出。再次啓動會找到該UUID 然後，duang 瞬間啓動。可惡的90s沒了
I used the command lsblk -f , and it didn't show any errors , my problems solved!
thanks for zhihu!