Create a bootable USB flash disk on MacOs?..

[jackyjoy123]

Hello,

Couldn't find a good how-to make a bootable usb disk on macOS, so I made this for anyone else looking.

1. Download the memstick version
2. run "$ diskutil list"
3. insert your flash media
4. run "$ diskutil list" again, notice the new device that has appered
5. run "$ diskutil unmountDisk /dev/diskN", were "N" is the device number
6. extract your downloeded copy, so that you get the ".img" file
7. convert your downloaded copy of pfSense to iso "$ hdiutil convert pfSense-CE-memstick-2.4.2-RELEASE-amd64.img -format UDRW -o pfSense-CE-memstick-2.4.2-RELEASE-amd64.iso"
8. Remove the ".dmg" file extension of the outputtet file.
9. write the "iso" file to flash drive "$ sudo dd if=pfSense-CE-memstick-2.4.2-RELEASE-amd64.iso of=/dev/rdisk2 bs=1m". Notice the "r" in "rdisk". This will speed things up.
10. eject the flash drive, "$ diskutil eject /dev/disk2"
11. Done!

thanks
jackyjoy

[A Former User]

Balena Etcher works great.

https://www.balena.io/etcher/