How to burn an .iso image of Windows 8.1 to a flash drive from under Mac OS?

Question

macOS

We have:

• MBP with macOS Yosemite,
  
• iso image win8.1,
  
• flash drive 8 GB,
  
• computer with mat. board ASUS H61M-K [uefi bios]
  

I write the image with the command

sudo dd if=/Windows\ 8.1\ Pro\ with\ update\ x64\ MoverSoft\ 04.2015.iso
of=/dev/disk2 bs=1m

I insert a flash drive into the computer - it refuses to boot from it.

Answer 1

So, by typing, the problem was solved:

1. Format the flash drive in FAT32 format
   
2. We connect the image
   
3. We stupidly copy all the files from the image to the USB flash drive
   
4. Profit! :)
   

Answer 2

sudo dd if=/Windows\ 8.1\ Pro\ with\ update\ x64\ MoverSoft\ 04.2015.iso
of=/dev/disk2 bs=1m; sync

if /dev/disk2 is a pointer to a device, not a partition.