dmg) to build our ISO image for Catalina. # Let's detach it to go back to a clear state $ hdiutil detach /Volumes/My \ New \ Image \ APFSĪlright, that should give us enough background on Disk Images (.
bash: /Volumes/My New Image APFS/bye.txt: Read-only file system $ echo "bye" > /Volumes/My \ New \ Image \ APFS/bye.txt $ hdiutil attach ~/Desktop/ronewimage.dmg Better start now while we learn about Disk Images. NOTE: We need to download the macOS Catalina installer from the AppStore, it's around 9Gb, so It'll take some time to download. There's a lot of information so let's get started. In this post, I'll show you the basics of working with Disk Images and also as an example we are going to create an ISO image to build our macOS Catalina VM using VirtualBox. To build our VM, we need to use Disk Images, another topic that is useful in other areas.īoth topics are interesting, and we can combine them. The other option is risk breaking your work machine in your experiments (not fun). Or if you want to learn networking or kernel debugging, it is also helpful to use a VM. If you are into security, you can set up a VM for your security lab. Having a virtual machine running macOS opens up a lot of opportunities for learning. Understanding Disk Images by building a macOS Catalina ISO image for VirtualBox Latest Update: May 16 2020
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