Making Windows system USB boot disk in MAC environment
Download system files Ylmf.iso
Convert to img file
Hdiutil Convert/users/os/downloads/ylmf.iso-format Udrw-o/users/os/downloads/ylmf.img
3. Uninstalling the USB flash drive
Diskutil List
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0:guid_partition_scheme *251.0 GB Disk0
1:efi EFI 209.7 MB disk0s1
2:APPLE_HFS Macintosh HD 250.1 GB disk0s2
3:apple_boot Recovery HD 650.0 MB disk0s3
/dev/Disk1
#: TYPE NAME SIZE IDENTIFIER
0:fdisk_partition_scheme *16.1 GB Disk1
1:dos_fat_32 UNTITLED 16.1 GB disk1s1
Osdemacbook-pro:downloads os$ diskutil unmountdisk/dev/disk1
Unmount of all volumes on Disk1 is successful
4. write file to USB drive
sudo dd if = ylmf.img.dmg of=/dev/rdisk1 bs=10m
5. Launch USB flash drive, start-up disk production completed.
Making Windows system USB boot disk in MAC environment