1. Download the macOS Installer from the App Store or a Website

Typically, this will download the installer into the /Applications folder.

macOS Monterey AppStore

OR

• Visit Mr. Macintosh to download the desired macOS installer. This website provides safe and direct downloads from Apple. In this example, macOS Monterey is selected.

Run the Install.pkg on macOS

• Double-click the Install.pkg file to install the macOS installer application in the Applications folder.

2. Create and Mount a DMG

• Execute the following command to create the DMG file. You may choose any preferred names for the DMG and volume.

hdiutil create -o /tmp/Monterey -size 16384m -volname Monterey -layout SPUD -fs HFS+J

Output of this command:

created: /tmp/Monterey.dmg

• Mount the created DMG:

hdiutil attach /tmp/Monterey.dmg -noverify -mountpoint /Volumes/Monterey

Output of this command:

/dev/disk5          	Apple_partition_scheme
/dev/disk5s1        	Apple_partition_map
/dev/disk5s2        	Apple_HFS                      	/Volumes/Monterey

3. Copy Installation Files to the Mounted Volume

• Execute the following command: