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‎createMacOsISOFile.html‎

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>How to Create Bootable MacOS Installation ISO</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<script type="text/javascript" src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
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<script type="text/javascript">
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$(function(){
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$('textarea').each(function(i,e){
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theTextarea = $(this);
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theTextarea.height((theTextarea[0].scrollHeight-5) +'px');
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});
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$('li').each(function(i,e){
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var uuid = 'li_' + Math.floor(Math.random() * Math.floor(1000000)).toString() + '_' + i.toString();
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$(this).contents().wrap('<span id="'+ uuid +'"><label for="cb_'+ uuid +'"></label></span>');
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$(this).prepend('<input type="checkbox" class="completeBox" id="cb_' + uuid +'" rel="'+ uuid +'" />')
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});
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$('code,div.codeBlock,textarea.codeBlock').each(function(i,e){
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theElement = $(this);
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var lines = theElement.html().split("\n");
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theElement.empty();
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if($.trim(lines[l]) != '' && $.trim(lines[l]).substr(0,1) != '#' && $.trim(lines[l]).indexOf(' #') == -1 && lines[l].substr(0, 4).toUpperCase() != 'REM '){
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theElement.append('<input type="image" src="images/clipboard.png" value="" class="copy-text" rel="copy_'+ i +'_'+ l +'" data-clipboard-text="'+ $.trim(lines[l].replace(/"/g, '&quot;')) +'" /><span id="copy_'+ i +'_'+ l +'">'+ lines[l] +'</span>');
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} else {
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theElement.append(lines[l]);
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}
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});
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$(document).on('click','input.copy-text',function(){
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theButton = $(this);
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$('input.copy-text').attr('src','images/clipboard.png');
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$('span.copy-animation,span.copy-animation-ps').removeClass('copy-animation copy-animation-ps');
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try {
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if($('#'+ theButton.attr('rel')).parent('div').hasClass('PS')){
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$('#'+ theButton.attr('rel')).addClass('copy-animation-ps');
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$('#'+ theButton.attr('rel')).addClass('copy-animation');
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navigator.clipboard.writeText(theButton.data('clipboard-text').replace(/<[^>]*>?/gm, ''));
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theButton.attr('src','images/clipboard_active.png');
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} catch(err) {
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return false;
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});
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$(document).on('click','input.completeBox',function(){
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theBox = $(this);
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$('#'+ theBox.attr('rel')).addClass('strikethrough');
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theBox.prop('disabled',true);
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theBox.parent('li').prevAll().each(function(i,e){
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theLI = $(this);
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if(theLI.find('input[type=checkbox]').not(':checked')){
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$('#'+ theLI.find('input[type=checkbox]').attr('rel')).addClass('strikethrough');
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theLI.find('input[type=checkbox]').prop('checked',true).prop('disabled',true);
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}
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});
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});
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if(window.self !== window.top){
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window.parent.$('iframe.stepsFrame').height((this['scrollingElement']['scrollHeight']+20) +'px');
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}
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});
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</script>
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<link href="css/steps.css" rel="stylesheet" type="text/css" />
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</head>
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<body>
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<div id="gridContainer">
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<div class="topMargin"></div>
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<div id="listName" class="topMargin">
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<h1>How to Create Bootable MacOS Installation ISO</h1>
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</div>
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<div></div>
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<div id="content">
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<h2>Things You Will need</h2>
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<ul>
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<li>An existing MacOS Device or VM</li>
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<li>30-40 GB of free disk space</li>
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</ul>
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<h2>Creating the Bootable .iso</h2>
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<ol>
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<li>Download the MacOS install from the Mac App Store<br />
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<span style="font-size:0.7em;"><em>NOTE: the easiest way to find them is to use a search engine, for example:<br />
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macos monterey site:apps.apple.com</em></span></li>
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<li>Click the Get button</li>
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<li>Wait for Software Update to find the update</li>
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<li>When prompted, click Download</li>
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<li>Wait for the download to complete</li>
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<li>Once the download completes, quit the installation if its starts</li>
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<li>Start LaunchPad from the dock</li>
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<li>Search terminal &gt; Click Terminal to launch it</li>
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<li>Run the following commands in terminal, altering the MacOS Installer name as needed
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<div class="codeBlock CMD"># create temporary disk image, make sure its larger than the downloaded installer<br />
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hdiutil create -o /tmp/macOS -size 15000m -volname macOS -layout SPUD -fs HFS+J<br />
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# mount the temporary disk image<br />
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hdiutil attach /tmp/macOS.dmg -noverify -mountpoint /Volumes/macOSISO<br />
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# use createinstallationmedia utility to copy files<br />
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sudo /Applications/Install\ macOS\ Monterey.app/Contents/Resources/createinstallmedia --volume /Volumes/macOSISO --nointeraction<br />
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# unmount the temporary disk image, alter the OS name as needed<br />
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hdiutil detach -force /Volumes/Install\ macOS\ Monterey<br />
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# convert the disk image to .iso<br />
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hdiutil convert /tmp/macOS.dmg -format UDTO -o ~/Desktop/macOS.cdr<br />
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# change the extension from .cdr to .iso<br />
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mv ~/Desktop/macOS.cdr ~/Desktop/macOS.iso</div>
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</li>
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</ol>
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</div>
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</div>
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</body>
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</html>
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