Create Windows 10 Install USB on macOS Catalina

Solution 1:

I had this exact question. I just finished using this tutorial and it worked for me.

For those who do not want to watch the video (although highly recommended).

1. Download the ISO you want to use. Open the terminal (in /Applications/Utilities).

2. cd /path/to/iso to drive in to folder or cd .. to go back the path.

   Convert .iso to .img using hdiutil:

   hdiutil convert -format UDRW -o /path/to/target.img /path/to/source.iso
   

   Rename if OS X gave it a .dmg file extension:

   mv /path/to/target.img.dmg path/to/target.img
   

3. Connect USB drive and type diskutil list to find the path.

   

4. Unmount USB drive diskutil unmountDisk (location of Disk).

   diskutil unmountDisk /dev/disk2
   

   

5. Locate img.

6. In the terminal, type sudo dd if=(Full location of img file) of=(location of external USB drive) bs=1m

   sudo dd if=/Users/adames729/Downloads/windows10.img of=/dev/disk2 bs=1m
   

   

7. Be patient, it will take about 20-45 minutes.

8. Once complete, eject by running diskutil eject (location of USB drive)

   diskutil eject /dev/disk2
   

   

Edit with an additional step needed to make the USB bootable.