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I have an issue where Directory service media read-only is disabled on macOS 11 and later.
Media Management settings are below.
file=mcxsetup.plist
Operating procedure.
(1) The login account is admin.
(2) Place mcxsetup.plist in /Users/admin folder.
(3) Execute the following in the terminal command.
$ sudo dscl . -mcximport /Users/admin /Users/admin/mcxsetup.plist
(4) Run the following command in the terminal and confirm that the value is set.
$ dscl . -mcxexport /Users/admin
(4) restart mac
(5) login admin
(6) Mount USB storage
(7) Make sure the USB storage is set to Read Only.
(8) admin logout
(9) Login with account name=admin
(10) USB storage becomes writable
Question:
(1) Have there been any specification changes since macOS 11?
(2) Is it not possible to use it in local environment?
(3) does anyone know a workaround?
Configuration-Profile-Reference URL
https://developer.apple.com/business/documentation/Configuration-Profile-Reference.pdf