The OS gets downloaded as parts, PKGs, DMGs and other files. A new folder “macOS downloads” appears in the “ gibMacOS-master” as you provide a download option, and the OS starts downloading as you can see in the video. You can use this script to download macOS Ventura 13, Monterey 12, Big Sur (11.1), Catalina (10.15), Mojave (10.14), and High Sierra (10.13.6). When the list is ready choose a number as per your OS option and press the Return/Enter key.

Wait for the script to fetch the macOS download catalogue from Apple. From the extracted folder, run the script called mand - it will open the Terminal as shown below. Hence, before anything, we will tell you how to download macOS offline installer directly from Apple to your Mac using a GitHub script.ĭownload the gibMacOS script from this link and extract it to your Mac. And you need to download a full-size macOS installer for making this disk. Installing macOS without internet requires a bootable USB disk. Having a macOS offline installer or a bootable USB disk is the only solution in such scenarios. But there are situations where you can’t download the OS from the Apple servers. Apple also provides an option for internet recovery of macOS if your computer fails to boot. The online OS update is OK if you have stable broadband connectivity and enough bandwidth. Be it a clean install or upgrade, Mac App store require you connect to the internet to download whole installation files. When the new owner starts up the Mac, they can use their own information to complete setup.Customers get Software upgrades for Mac computers through the online app store ever since the release of macOS Lion. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.Īfter installation is complete, your Mac might restart to a setup assistant.

Allow installation to complete without putting your Mac to sleep or closing its lid.

If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.

If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.

If the installer asks to unlock your disk, enter the password you use to log in to your Mac.

To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.įollow these guidelines during installation: Reinstalling macOS does not remove data from your Mac.

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