Please check the solution linked by @Phill, verified on 10.15.4
csrutil disable to turn off System Integrity Protection and deleted some unused pre-installed apps before macOS 10.14. Recently, I upgraded to macOS 10.15 Beta (19A487l) and found this way didn't work anymore. My admin account only has Read-only access for pre-installed applications.
/Applications in Terminal is actually
➜ ~ ls /Applications Alfred 4.app Safari.app Utilities Google Chrome.app ShadowsocksX-NG.app Visual Studio Code.app
I don't have write access to
➜ ~ sudo rm -rf /System/Applications/Stickies.app ... rm: /System/Applications/Stickies.app: Read-only file system
I also cannot change the privilege from
Finder -> /System/Applications/Stickies.app -> Get Info -> Sharing & Permissions, it says:
The operation can’t be completed because you don’t have the necessary permission.
I've read Is it possible to delete the "useless" apps pre-installed on my Mac? and
chflags didn't work either because of Read-only.
How can I access to the "real"
system account or is there the other way to delete or hide those applications?