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Contents/Resources/createinstallmedia -volume /Volumes/Installer -nointeraction Erasing disk: 0%. $ cd /Applications/Install \ macOS \ Monterey.app $ diskutil partitionDisk /dev/disk2 1 JHFS+ Installer 100% To create a bootable USB installer, mount a USB drive, and erase and partition it, then use the createinstallmedia utility: See Create a bootable installer for macOS, or run the utility without arguments to see how it works. Instead of booting from the network or using target disk mode, a bootable macOS installer can be made with the createinstallmedia utility included in Contents/Resources folder of the installer application bundle. $ codesign -dvv /Applications/Install \ macOS \ Monterey.app Executable=/Applications/Install macOS Monterey.app/Contents/MacOS/InstallAssistant_springboard Identifier= Format=app bundle with Mach-O universal (x86_64 arm64) CodeDirectory v=20400 size=641 flags=0x2000(library-validation) hashes=13+3 location=embedded Platform identifier=13 Signature size=4523 Authority=Software Signing Authority=Apple Code Signing Certification Authority Authority=Apple Root CA Signed Time=at 1:10:31 AM ist entries=32 TeamIdentifier=not set Sealed Resources version=2 rules=2 files=0 Internal requirements count=1 size=88 Creating a bootable USB installer To verify the code signature and integrity of macOS application bundles: The macOS installation application is code signed, which should be verified to make sure you received a legitimate copy, using the pkgutil -check-signature or codesign -dvv commands.
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Packet capture of an unencrypted HTTP conversation during macOS recoveryĪn alternative way to install macOS is to first download the latest version of macOS ( Latest: macOS Monterey) from Apple via the App Store and create a custom installable system image.
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However, this way exposes the serial number and other identifying information over the network in plain text, which may not be desired for privacy reasons. A system image can be downloaded and applied directly from Apple. The simplest way is to boot into Recovery Mode by holding Command and R keys at boot. Always prefer free and open source software ( which macOS is not).
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This guide is a collection of techniques for improving the security and privacy of a modern Apple Macintosh computer ("MacBook") running a recent version of macOS (formerly known as "OS X").