Mac Start root User

Method One:
1. Open Terminal
2. jonesduan-macbook-pro:~ user$ sudo-i
3. Enter the root password.

Method Two:
And method one in the same 1 and 3 steps, only the second step to enter the command is not sudo-i but sudo su or su.

Difference:
The difference between method one and method two is that the terminal does not display the same when root permission is obtained.

One way to do this is:
jonesduan-macbook-pro:~ root#

The second method is this:
sh-3.2#

Specifically why this is the case, where the specific meaning is what, not quite understand, welcome to communicate! ^_^
But individuals prefer to use the former.


Reference:
Forgot root password under Mac, modify root password introduction see
http://blog.csdn.net/xuefeng1009/article/details/7421804

Enable and disable root user under Mac see
http://shlei.iteye.com/blog/855336

Mac Start root User