When the test is not careful centos / root with rm -rf to delete
Delete / root directory, the system does not crash, you can also start, but is looked at in a bad mood!
Solution:
1. Create a direct / root directory; mkdir / root
2. Copy hidden files / etc / skel / next to / under the root directory; cp /etc/skel/.bash* / root
3. I can restart
4. production environment when using rm -rf must be careful, it is best to test in a test environment and then make sure that no problems !!!