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Then press "Enter" to burn the ISO image file to the USB drive. And replace " your" with your ISO file name, for example " daossoft-windows-password-rescuer.iso". Replace " /path/to" with your file folder your ISO image file located in. Step 6: Type in " sudo dd if = /path/to/your.iso of =/dev/rdisk2 bs=4k" command. (Replace "#" with "2" which is your USB drive number.) Step 5: Type in " diskutil unmountDisk/dev/disk#" command shown as below, then press "Enter" to unmount it. Here assume that the USB drive number is "2". Step 4: Take down the number of your USB drive. Step 3: Type in " diskutil list" command shown as below, then press "Enter" to list all the disks in your Mac computer. (Click the "Spotlight" icon in the upper right corner on your Mac OS desktop and type "Terminal" in the search bar. Have no any ISO image file? Download one immediately into your Mac. However, it is also easy and convenient to burn an ISO image to USB with "dd" command in Terminal on Mac. As we know, it is the most common method to use Disk Utility built-in to Mac OS to burn an ISO image file to disk. In Mac operating system, there are more than one method to create an image disk.
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To get started with you require a USB drive with at least 8GB storage (16GB recommended). Reinstalling Mac OS is a time-consuming process and requires a lot of patience that’s why recommend doing this process in your free time or weekends. Run diskutil eject /dev/diskN and remove your flash media when the command completes Restart your Mac and hold down Alt while the Mac is restarting to choose the USB stick Note: On newer Macs you might have to install an EFI boot manager to boot from USB. Macbooks or iMacs hardly require reinstallation of their Mac OS, but when they do then it’s a fairly difficult process especially if your secondary computer is Windows. Start Disk Utility.app and unmount (don't eject) the drive.
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