It is recommended to run a free scan with Combo Cleaner - a tool to detect malware and fix computer errors.

Copy or 'burn' an ISO file into the flash drive.

So, if using data storage devices such as CDs or DVDs is not an option, follow the step-by-step guide below to create a bootable installer drive without using third-party software. Bear in mind that when using 'sudo dd', caution is required since small mistakes when pointing to disks can result in permanent data loss. This, however, might be a problem for inexperienced Mac users since it requires the use of a command-line and Terminal (the most reliable way to create the installer drive).Īlthough you may be unfamiliar with using a command line, carefully following the steps listed below will help. You can create a bootable flash drive without using third-party software. Despite the advantages of flash drives, there are often problems when creating a bootable device and adding or 'burning' an ISO file to them.

New computers often come without a CD-Rom device (responsible for reading CDs and DVDs) since they have been replaced with 'flash drives that offer memory read/write speeds several times higher.

How to Create a Bootable Installer USB Flash Drive on Mac Computer?

Mac burn iso image