39 lines
1 KiB
Bash
39 lines
1 KiB
Bash
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#!/usr/bin/env bash
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# Create a "ISO" (DMG) image for powering offline macOS installations
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# Bail at first ISO creation error
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set -e
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display_help() {
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echo "Usage: $(basename $0) [-h] [<path/to/install_app.app> <path/to/output_iso_file.iso>]"
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exit 0
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}
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if [ "$1" == "-h" ] ; then
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display_help
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fi
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if [ "$#" -eq 2 ]
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then
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in_path=$1
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dmg_path=$2
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elif [ "$#" -eq 0 ]
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then
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in_path=/Applications/Install\ macOS\ Catalina.app
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dmg_path=~/Desktop/Catalina.iso
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echo "Using default paths:"
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echo "Install app: $in_path"
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echo "Output disk: $dmg_path"
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else
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display_help
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fi
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# Borrrowed from multiple internet sources
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hdiutil create -o "$dmg_path" -size 9g -layout GPTSPUD -fs HFS+J
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hdiutil attach "$dmg_path" -noverify -mountpoint /Volumes/install_build
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sudo "$in_path/Contents/Resources/createinstallmedia" --volume /Volumes/install_build --nointeraction
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# createinstallmedia may leave a bunch of subvolumes still mounted when it exits, so we need to use -force here.
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hdiutil detach --force "/Volumes/Install macOS Catalina"
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