{"id":71244,"date":"2021-02-16T11:30:00","date_gmt":"2021-02-16T17:30:00","guid":{"rendered":"https:\/\/eshop.macsales.com\/blog\/?p=71244"},"modified":"2021-02-15T14:47:41","modified_gmt":"2021-02-15T20:47:41","slug":"create-bootable-install-disk-for-big-sur","status":"publish","type":"post","link":"https:\/\/eshop.macsales.com\/blog\/71244-create-bootable-install-disk-for-big-sur\/","title":{"rendered":"How to Create a Bootable USB Installer Disk for macOS Big Sur"},"content":{"rendered":"\n<p>Over the years, <a href=\"https:\/\/eshop.macsales.com\/blog\/?s=disk+maker+x\">we\u2019ve recommended using DiskMaker X<\/a> as a quick and easy way to create a bootable install disk for various versions of macOS. Guillaume G\u00e8te, the developer of <a href=\"https:\/\/diskmakerx.com\">DiskMaker X<\/a>, has decided to call it quits with the venerable utility. In explanation, G\u00e8te said:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>I had a few hopes that thing would look a bit easier for macOS Big Sur, but they sure don\u2019t look better at all. Though using the <code>createinstallmedia<\/code> command works fine from the Terminal, managing to embed it in a meaningful and easy-to-use way seems impossible for me now.<\/p><p>Besides, I\u2019ve been working on a lot of other projects in the last years, <a href=\"https:\/\/www.gete.net\/consulting\">my own company<\/a> needs me a lot more, and I feel I went from a fun project for something that seemed to be a life-changer (ok, maybe not that big, but still quite big) tool for many of you, and I\u2019m really, really happy for this.<\/p><\/blockquote>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-thumbnail\"><a href=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon.png\"><img loading=\"lazy\" decoding=\"async\" width=\"146\" height=\"190\" src=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon-146x190.png\" alt=\"macOS Big Sur install icon with arrow\" class=\"wp-image-71321\" srcset=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon-146x190.png 146w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon-92x120.png 92w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon-248x323.png 248w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon.png 422w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon-146x190@2x.png 292w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/big-sur-app-install-icon-92x120@2x.png 184w\" sizes=\"auto, (max-width: 146px) 100vw, 146px\" \/><\/a><\/figure><\/div>\n\n\n\n<p>Mac users wishing to create a bootable install disk for Big Sur now need to use the <code>createinstallmedia<\/code> command in Terminal, and here\u2019s how to do it. These instructions work to create a bootable install disk for all versions of macOS from macOS 11 Big Sur back to OS X El Capitan 10.11.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-default\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-s-needed-to-create-a-bootable-install-disk\">What\u2019s needed to create a bootable install disk<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>A USB flash drive or other secondary volume formatted as Mac OS Extended, with at least 14GB of available storage<\/li><li>A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El Capitan<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store.png\" alt=\"The macOS Big Sur download page in the Mac App Store\" class=\"wp-image-71268 img-border\" width=\"700\" height=\"368\" srcset=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store.png 1400w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-229x120.png 229w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-284x149.png 284w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-190x100.png 190w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-1536x806.png 1536w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-2048x1075.png 2048w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-1100x580.png 1100w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-229x120@2x.png 458w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-284x149@2x.png 568w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/macOS_Big_Sur_Installer_App_Store-190x100@2x.png 380w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><figcaption>The macOS Big Sur download page in the Mac App Store<\/figcaption><\/figure><\/div>\n\n\n\n<hr class=\"wp-block-separator is-style-default\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-download-macos-from-apple\">Download macOS from Apple<\/h2>\n\n\n\n<p>To ensure that you\u2019re getting a valid, un-hacked, and legal version of macOS, you need to download it directly from Apple. For <a href=\"https:\/\/apps.apple.com\/us\/app\/macos-big-sur\/id1526878132?mt=12\">macOS Big Sur<\/a>, <a href=\"https:\/\/apps.apple.com\/us\/app\/macos-catalina\/id1466841314?mt=12\">macOS Catalina<\/a>, <a href=\"https:\/\/apps.apple.com\/us\/app\/macos-mojave\/id1398502828?mt=12\">macOS Mojave<\/a> or <a href=\"https:\/\/apps.apple.com\/us\/app\/macos-high-sierra\/id1246284741?mt=12\">macOS High Sierra<\/a>, the links download an installer directly into your app folder. The installer has the name \u201cInstall macOS [version name]\u201d.<\/p>\n\n\n\n<p>For Mac OS X El Capitan, the link downloads a disk image file named InstallMacOSX.dmg. When the file is downloaded, double-click it to install an app named \u201cInstall OS\u00a0X El Capitan\u201d into your Applications folder.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-default\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-using-createinstallmedia-in-terminal\">Using \u201ccreateinstallmedia\u201d in Terminal<\/h2>\n\n\n\n<p>Let\u2019s get down to business.<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Plug in the USB flash drive or formatted volume you\u2019re using for the bootable install disk. For this article, I used a 2TB USB hard disk drive erased and formatted as Mac OS Extended and given the name Installer.<\/li><li>Find the Terminal app in the Utilities folder of your Applications folder. Launch the app.<\/li><li>At the Terminal prompt, type or copy and paste (easier and more accurate) one of the following commands. These commands are dependent on the installer being in your Applications folder. In each command, replace the name <em>MyVolume<\/em> with the name of your volume. For my example, I replaced it with <em>Installer<\/em>.<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-big-sur\">Big Sur:*<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo \/Applications\/Install\\ macOS\\ Big\\ Sur.app\/Contents\/Resources\/createinstallmedia --volume \/Volumes\/MyVolume<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-catalina\">Catalina:*<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo \/Applications\/Install\\ macOS\\ Catalina.app\/Contents\/Resources\/createinstallmedia --volume \/Volumes\/MyVolume<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-mojave\">Mojave:*<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo \/Applications\/Install\\ macOS\\ Mojave.app\/Contents\/Resources\/createinstallmedia --volume \/Volumes\/MyVolume<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-high-sierra\">High Sierra:*<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo \/Applications\/Install\\ macOS\\ High\\ Sierra.app\/Contents\/Resources\/createinstallmedia --volume \/Volumes\/MyVolume<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-el-capitan\">El Capitan:<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo \/Applications\/Install\\ OS\\ X\\ El\\ Capitan.app\/Contents\/Resources\/createinstallmedia --volume \/Volumes\/MyVolume --applicationpath \/Applications\/Install\\ OS\\ X\\ El\\ Capitan.app<\/code><\/pre>\n\n\n\n<p class=\"footnote light-blue-bg\">NOTE (*): If your Mac is using macOS Sierra or earlier, include the &#8220;&#8211;applicationpath&#8221; argument and installer path, as shown in the command for El Capitan.<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\"><li>Once the command has been entered, press Return.<\/li><li>You\u2019ll be prompted to type your administrator password and press Return again. Note that for security, Terminal doesn\u2019t display characters as you type your password.<\/li><li>When you\u2019re asked, type Y to confirm that you want to erase your bootable installer volume, then press Return. Terminal displays the progress of the erasure.<\/li><\/ol>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume.png\" alt=\"Type Y to confirm erasure of the bootable installer volume\" class=\"wp-image-71276 img-border\" width=\"567\" height=\"155\" srcset=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume.png 1134w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume-284x77.png 284w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume-190x52.png 190w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume-284x77@2x.png 568w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Confirm_Erase_Bootable_Installer_Volume-190x52@2x.png 380w\" sizes=\"auto, (max-width: 567px) 100vw, 567px\" \/><\/a><figcaption>Type Y to confirm erasure of the bootable installer volume<\/figcaption><\/figure><\/div>\n\n\n\n<ol class=\"wp-block-list\" start=\"7\"><li>Once the volume is erased, an alert may appear stating that Terminal would like to access files on a removable volume. If you see this, click OK to allow the copy to move ahead.<\/li><li>Once Terminal shows that the process is complete, the volume has the same name as the installer you downloaded, such as Install macOS Big Sur. You can now quit Terminal. Eject the volume by dragging it to the Trash or right-clicking and selecting \u201cEject\u201d from the menu.<\/li><\/ol>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Bootable_Install_Disk_Ready_To_Use-e1613410971356.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Bootable_Install_Disk_Ready_To_Use-e1613410971356.png\" alt=\"Terminal at the successful conclusion of the createinstallmedia command\" class=\"wp-image-71272 img-border\" width=\"567\" height=\"223\" srcset=\"https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Bootable_Install_Disk_Ready_To_Use-e1613410971356.png 1134w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Bootable_Install_Disk_Ready_To_Use-e1613410971356-284x111.png 284w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Bootable_Install_Disk_Ready_To_Use-e1613410971356-190x75.png 190w, https:\/\/eshop.macsales.com\/blog\/wp-content\/uploads\/2021\/02\/Bootable_Install_Disk_Ready_To_Use-e1613410971356-768x301.png 768w\" sizes=\"auto, (max-width: 567px) 100vw, 567px\" \/><\/a><figcaption>Terminal at the successful conclusion of the createinstallmedia command<\/figcaption><\/figure><\/div>\n\n\n\n<hr class=\"wp-block-separator is-style-default\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-using-the-bootable-install-disk\">Using the Bootable Install Disk<\/h2>\n\n\n\n<p>Do you have a Mac with Apple silicon? If so, there\u2019s a slightly different process. To see if your Mac uses Apple silicon, select About This Mac from the Apple (\uf8ff) menu. If it shows Apple M1 or another Apple chip, then follow the Apple silicon instructions. Otherwise, use the instructions for an Intel processor.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-for-apple-silicon-macs\">For Apple Silicon Macs<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Plug your bootable installer into a Mac that has an Internet connection and that is compatible with the version of macOS you\u2019re about to install.<\/li><li>Turn on the Mac and continue to hold down the power button until you see the startup options window. It displays all bootable volumes (which should be your installer and the internal drive on your Mac), and a gear icon labeled \u201cOptions\u201d.<\/li><li>Select the volume with the bootable installer, then click Continue.<\/li><li>The macOS installer opens. Follow the onscreen instructions.<\/li><\/ol>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-for-intel-processor-macs\">For Intel Processor Macs<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Plug your bootable installer into a Mac that has an Internet connection and that is compatible with the version of macOS you\u2019re about to install.<\/li><li>Restart or turn on your Mac, then immediately press and hold the Option (Alt or \u2325) key.<\/li><li>Release the Option key when a dark screen appears displaying your bootable volumes.<\/li><li>Select the volume with the bootable installer, then click the Up arrow or press Return. If you\u2019re unable to start up from the bootable installer, then you\u2019ll need to <a href=\"https:\/\/support.apple.com\/en-us\/HT208198\">use these instructions from Apple to allow booting from external media<\/a>.<\/li><li>If prompted, select your language.<\/li><li>Select Install macOS (or Install OS X) from the Utilities window. Click Continue, then follow the onscreen instructions.<\/li><\/ol>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>It\u2019s a great idea to have a bootable install disk available for those rare emergencies when you might need to re-install your Mac operating system and Recovery Mode isn\u2019t working. With <a href=\"https:\/\/eshop.macsales.com\/shop\/external-storage#drive-configuration:single-bay\">OWC external drives available for as little as $79.75<\/a>, it\u2019s inexpensive insurance.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-default\"\/>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-related-links\">Related Links<\/h4>\n\n\n\n<ul class=\"wp-block-yoast-seo-related-links\"><li><a href=\"https:\/\/eshop.macsales.com\/blog\/50878-how-to-create-a-bootable-macos-catalina-installer\/\">How to Create a Bootable macOS Catalina Installer<\/a><\/li><li><a href=\"https:\/\/eshop.macsales.com\/blog\/33145-os-x-el-capitan-download-and-installation-quick-guide\/\">OS X El Capitan: Download and Installation Quick Guide<\/a><\/li><li><a href=\"https:\/\/eshop.macsales.com\/blog\/2714-video-shows-how-to-add-more-memory-to-the-october-2009-macbook\/\">Video shows how to Add more Memory to the October 2009 MacBook<\/a><\/li><li><a href=\"https:\/\/eshop.macsales.com\/blog\/33148-friday-five-great-new-features-in-os-x-el-capitan\/\">Friday Five: Great New Features in OS X El Capitan<\/a><\/li><li><a href=\"https:\/\/eshop.macsales.com\/blog\/31167-revisiting-wwdc-a-detailed-look-at-os-x-ios-watchos-announcements\/\">Revisiting WWDC: A Detailed Look at OS X, iOS, watchOS Announcements<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Over the years, we\u2019ve recommended using DiskMaker X as a quick and easy way to create a bootable install disk for various versions of macOS. Guillaume G\u00e8te, the developer of DiskMaker X, has decided to call it quits with the venerable utility. In explanation, G\u00e8te said: I had a few hopes that thing would look [&hellip;]<\/p>\n","protected":false},"author":81,"featured_media":71317,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":"","footnotes":""},"categories":[4],"class_list":["post-71244","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.2 (Yoast SEO v20.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Create a Bootable USB Mac Disk for Big Sur<\/title>\n<meta name=\"description\" content=\"Over the years, we\u2019ve recommended using DiskMaker X as a quick and easy way to create a bootable install disk for various versions of macOS. 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