(CRC32 $F2D81FEC: Driver Descriptor Map (DDM : 0 ) ) Reading Driver Descriptor Map (DDM : 0 )… Just a warning: simply copying and pasting is a bad idea unless you know what each step really does.
Create boot image for mac el capitan install#
Here all steps combined, please note that you will have to make sure the proper filename is chosen to create the macOS install media. Mojave, Sierra, etc) in the scripts, or to avoid typos: simply rename the resulting DMG to your liking after all these steps. I’m labeling the DMG “ InstallMedia“, for example purposes.
We use “ sudo” on Terminal, for which we will need an account with admin rightsand “sudo” will ask for your password! The Apple script doesn’t provide for this (it kinda does, but you might as well follow these steps). This option is useful in case we do not want a USb stick or drive – for example for a Virtual Machine, we’d rather have a DMG, as it’s much faster when installing macOS on your Virtual Machine. Option 2 – Manually – Creating macOS Install Media as a DMGĪs with option 1, we of course first will need to download the right file from the Apple App Store. Sudo /Applications /Install\ OS\ X\ El\ Capitan.app /Contents /Resources /createinstallmedia -volume /Volumes /MyUSBDrive -applicationpath /Applications /Install\ OS\ X\ El\ Capitan.app
Create boot image for mac el capitan how to#
Note: Here I describe how to create macOS install media, either as a bootable USB stick to do a fully clean macOS install for your Mac, or a DMG file, for example to setup a virtual machine. a DMG or ISO file) so you can install another version of macOS. This comes with challenges though, since Apple, in their infinite wisdom, does not simply provide macOS install media (eg. Some of my favorite tools simply no longer work, and as a developer this makes me nervous when considering switching to the latest and greatest.įor this purpose I always create a virtual machine in VMWare Fusion, running the macOS version that I ran before the update.
For some it’s nothing, for other it’s a disaster.Ĭatalina is one of the latter, a disaster for quite few amongst us, due to changed security rules and the lack of support of 32 bit applications. In this article, I’ll show you the steps to create macOS install Media …Īs most Mac users will know each new macOS version comes with a few challenges.
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