Create Bootable USB Disk with DVD ISO Image (Mac)

Abstract: Learn how to create a bootable USB disk from a DVD ISO image on a Mac using command line. No folder called /Applications/ is needed.

Created: 2025-01-29 by UserComp.com Editors

To create a bootable USB stick from a DVD ISO file on a Mac, follow these steps using the Terminal:

First, plug in your USB drive and make sure it's formatted as MS-DOS (FAT32).
Open Terminal (found in Applications > Utilities).
Identify the name of your USB drive. Run the following command and look for your USB drive's name:

diskutil list

Unmount the USB drive using its identifier from the previous command. Replace DiskX with the identifier of your USB drive:

diskutil unmountDisk /dev/DiskX

Now, create a temporary directory:

mkdir /tmp/usb-install

Mount the USB drive at the temporary directory:

diskutil mount /dev/DiskXs1 /tmp/usb-install

Write the ISO file to the USB drive:

hdiutil convert /path/to/your.iso -format UDRW -o /tmp/usb-install/install.dmg

Mount the DMG file:

hdiutil attach /tmp/usb-install/install.dmg

Copy the necessary files from the mounted DMG to the USB drive:

cp -R /Volumes/Macintosh\ HD/Applications/Install\ macOS.app /tmp/usb-install/

Unmount the DMG file:

hdiutil detach /Volumes/Install\ macOS

Eject the USB drive:

diskutil eject /dev/DiskX

Now, you should have a bootable USB stick with the contents of the DVD ISO file.

References:

Tags: MacOS Linux Hardware Others

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