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I'm trying to change the Finder icon, I went to

/System/Library/CoreServices/Dock.app/Contents/Resources/

I also have 2 icons ready to replace.

enter image description here

I tried to drag these 2 images up, I saw a block sign.

enter image description here

Then I was thinking, maybe it's locked, but then I don't have any options to unlock it.

enter image description here

How would one change the Finder icon?

I've also noticed, I also can't change Terminal, Message, Stickies, and Mail. :(

enter image description here

code-8
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    The System volume is sealed: it cannot be modified. – lhf Feb 11 '22 at 01:26
  • So we will never be able to modify our finder icon ? – code-8 Feb 11 '22 at 01:30
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    Even if you could change the icon, it is almost certain that it would be put back to the default after a macOS update. – IconDaemon Feb 11 '22 at 02:12
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    I've also noticed, I also can't change Terminal, Message, Stickies, and Mail. :( – code-8 Feb 11 '22 at 02:23
  • If you break the 'seal' the Mac will refuse to do anything except run a repair install. Not worth the effort. – Tetsujin Feb 11 '22 at 08:25
  • MacOS provides very little in the way of user customisation of the interface. – benwiggy Feb 11 '22 at 13:03
  • @benwiggy Before Catalina, it was possible to make almost any customizations you want. Unfortunately OP jumped on the bandwagon a few years too late. – At0micMutex Feb 15 '22 at 18:08
  • @At0mic "Almost any"? Perhaps. It's never been easy, not least since SIP was introduced. I dare say in Mavericks you could have had everything day-glo with flower petal icons and Corinthian column scroll bars, but the effort usually overwhelmed the desire. – benwiggy Feb 15 '22 at 21:44

1 Answers1

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You can't. Starting with Big Sur, the System volume is sealed: it cannot be modified at all.

lhf
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