How can I change the permissions? His does not work.

If this problem occurred when I tried to change the icons on my mac. The apps that I downloaded as pages, spotify, google chrome, etc have been changed without problems. (I used the method where get you information, then paste in). But when I went to change the icons of the apps that came with my computer such as safari, messages, photos, etc., that it did not work. There was no option to paste into the file menu and when I did command + v he comes to make a noise. So I googled how to change safari icon and it says that I have to change permisions. That's where the problem came. I pressed get info on safari and went down to the right, then I clicked on the lock and entered my password and the unlocked locking. But then when I went to the control panel and selected "reading and writing" in all he did not. He three get out a message that "the operation cannot be completed because you do not have the necessary permissions. Things to note are that in the permissions Panel my name and (I) was not under the name column. I am the sole owner of this mac and I don't know whats going on. Any help would be appreciated. Thank you!

I think you're probably be lived this because of SIP (Protection of the integrity of the system). This was introduced in El Capitan (10.11).

Tags: Notebooks

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