In the following procedure we will create a Microsoft Windows bootable USB flash drive in macOS, from scratch with command line. Root privileges are required. Note: This works only with BIOS or UEFI CSM (supports old BIOS style booting). Not compatible with native UEFI.
Test environment: macOS 10.13.1 Requirements: and Warning: All the data on the USB flash drive will be destroyed without warning! Make sure you selected the correct drive or you will destroy a wrong disk! Identify the USB flash drive, in my example the device is /dev/disk2./syslinux -i /dev/disk2s1 syslinux for Mac OS X; created by Geza Kovacs for UNetbootin unetbootin.sf.net '/dev/disk2s1' unmounted successfully.
/dev/disk2s1 DOSFAT32 /Volumes/WINDOWS mountpoint is /Volumes/WINDOWS checkpoint1 checkpoint1.5 checkpoint1.6 /Volumes/WINDOWS/ldlinux.sys ldlinuxname checkpoint2 checkpoint3 '/dev/disk2s1' unmounted successfully. Checkpoint4 checkpoint5 checkpoint6 checkpoint7 checkpoint8 /dev/disk2s1 DOSFAT32 /Volumes/WINDOWS 8.
USB drives have limited space and it becomes essential to format it for getting free space. USB drives can get corrupted or infected by virus. The only way to remove those issues is by formatting the flash drive. How to Format a USB flash drive on Mac You can easily format Mac USB drive by following the steps mentioned below. External hard drives enjoy different forms, such as SSD, USB flash drive, Sony pen drive and so on, and vary a lot in their capacities from gigabytes to terabyteHowever, you may see external USB hard drive not formatted error, saying you need to format the disk before you can use it; considering there are important files on the hard drive.
![Activate Activate](/uploads/1/2/5/4/125488533/154964297.png)
![Usb Flash Drive Waiting For Partitions To Activate Mac Usb Flash Drive Waiting For Partitions To Activate Mac](/uploads/1/2/5/4/125488533/585652690.jpg)
Copy syslinux BIOS modules and create syslinux.cfg. Hi le-snake and Henrik, You were right there was some errors in this tutorial, I corrected them.
Because the link for syslinux-4.03.tar.gz now it’s redirected, the curl command was not working because I did not used the -L parameter to follow the redirect, now I uploaded the files to oueta.com. Bootable flag was not set, I added step three. There was also an error on step eight, I removed the -e parameter from the echo. Make sure you try to boot with legacy BIOS or UEFI CSM (supports old BIOS style booting). Please let me know if you still have problems, thanks.