How to “burn” an iso to a usb thumb drive using a mac

So from time to time it is necessary to put an iso onto a usb thumb drive… Back in the day it was simple to just burn it to a blank disc but many servers and computers don’t come with dvd/cd drives anymore. I don’t see this as a bad thing, certainly I almost never use the portable blu ray I purchased with my last computer…

Here is how to do it in terminal, still the cleanest way…

  • First run diskutil list
  • then insert your usb stick
  • and run diskutil list again to see the disk node (e.g. /dev/disk2).
  • Now run diskutil unmountDisk /dev/diskN
  • and do sudo dd if=/path-to.iso of=/dev/rdiskN bs=1m
  • When finished diskutil eject /dev/diskN

Thats about it! Pretty simple really.

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