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If you have already installed Catalina, clicking the “Get” button in the Mac App Store will launch System Preferences > Software Update, and the following dialog appears: Software Update asks you to verify that you want to download a copy of macOS Catalina No problem! It’s available on the Mac App Store. Have you already upgraded your Mac to Catalina? If you have, the installer probably isn’t in your Applicaitons folder. Before you launch DiskMaker X 9, you need to download the macOS Catalina installer.
Beta download for diskmaker x install#
Install DiskMaker X 9 on your Mac by dragging the app icon to the Applications folder alias as shown by the gray arrow on the installer window. Drag the icon to the Applications folder alias as shown. A window similar to the one seen below appears: The DiskMaker X 9 Installer. Once you’ve located the installer, double click it to mount the disk image.

By default, it should be in the Downloads folder. To install DiskMaker X 9, locate the installer disk image (.dmg) file. You can also create a single drive with installers for every Mac operating system back to Lion! Install DiskMaker X 9
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Note that the developers of the app also have DiskMaker X versions available back to Mac OS X 10.7 “Lion”, which is helpful if you wish to load older Macs with their original operating system versions. Download DiskMaker X 9Ĭlick the DiskMaker X link in the first paragraph of this article and download a copy of DiskMaker X 9 to your Mac. With a blank external hard disk or flash drive at your fingertips, follow these instructions. The app is free, but a donation is suggested. You can always use the Mac Terminal app to create a bootable installation disk, but DiskMaker X automates the process.
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Diskmaker X has been my tool of choice for making bootable install drives for years, and in this article, I’ll show how to create one for macOS Catalina. While I was able to reload my MacBook from the bootable backup drive, I know that it’s always good practice to have one drive - a cheap flash or hard drive - that can be booted for one purpose, that of doing a clean install of macOS. A final release should ship shortly after OS X Mavericks is itself released.My recent experience with water damage to my new 16-inch MacBook Pro reinforced two practices that I’ve followed for many years making a bootable backup and creating a bootable macOS install drive.

Lion DiskMaker 3.0 beta 2 is available now as a freeware download for Macs running OS X 10.7 (Lion) or later. Gète also recommends leaving the Mavericks installer file in the default /Applications folder.įinally, due to the aforementioned structural changes to the Maverick installer file, users can no longer use the InstallESD.dmg file extracted from the installation app instead, you’ll need to use the actual app itself. The app hasn’t been tested within Mavericks itself, but does work in Mountain Lion or earlier.

There’s also no progress bar to indicate how far the disk creation process has gone, although it’s promised for the final version.

Lion DiskMaker author Guillaume Gète notes that the internal structure of the Mavericks installer has radically changed from previous builds, which has led to some additional caveats being attached to this beta release.įirst, he recommends users stick to the default options, and avoid the “Update an existing disk feature” as it doesn’t yet work. Version 3.0b2 adds support for OS X Mavericks “Gold Master” release, which was the final version of OS X 10.9 shipped to developers earlier this month. Users will be able to create Mavericks boot disks with the latest version of Lion DiskMaker.
