Learn how to prepare a MacOS DMG image from an unusual source.
Learn how to prepare a MacOS DMG image from an unusual source.
Hi. You need a bootable image of 10.13.4, but the App Store only gives the 15MB version. Since you can pause the download before it restarts and then remove the files, you're on the right track. I understand your concern about getting the correct DMG in another folder. If someone has experience with this process, their commands might help save time. You mentioned a tutorial that aligns with Apple's official method, though it seems the 15MB version doesn't include the required 'createmedia' file. Let me know if you'd like guidance on adjusting the steps!
The standard method for creating a bootable installer from the Applications directory is straightforward—just adjust the starting location and the app path after the target volume. For instance, changing the command to run from /macOS-420/ works similarly. You must use .APP files, not DMGs, since the latter need prior mounting. Note: You might want to replace the volume with a read-only empty DMG that can later become an ISO, though ISO formats aren't typical for Macs.