The first step is to identify the USB drive device name using diskutil list. Here, I'll describe how to do so on a Mac using a special third party toolĬalled wimlib. Official installation instructions from Microsoft,īut that only covers creating the USB drive from Windows. The solution is to split the file, as described in the Click the button, then click the button and select the Windows installation ISO file from the open dialog box. One of the files in the current 64-bit version of the Windows 10 installer, Copy the Boot Camp Support Software downloaded in the previous step to the computer with an installed copy of WinToUSB, and connect the destination external hard drive or USB flash drive to this computer, then run WinToUSB. Requires the USB drive be formatted as FAT32, which has a file size limit of 4 GB. This helped, but I came across a problem: the installer If you travel a lot but don't want to drag your laptop, or don't want to work on a computer that lacks applications and preferences, you should consider to install and run Windows 10 from USB flash. He suggests formatting the USB disk on the command lineĪnd copying the files over manually. I found a guide from a guy called Josh Beam The model of Mac may also determine which version of Windows is officially supported. That will ensure all the necessary drivers etc are included. Originally it seems that you could create a bootable USB disk using MacOS's Boot Camp Assistant ,īut that option seems to've been removed in recent versions of MacOS. If you have the Windows installer ISO create the USB again using the Boot Camp Assistanty in the Utilities folder. Special requirements in order to be bootable (it uses a special UEFI boot process). Normally I use etcher for burning ISOs, but a Windows USB installer has Wimlib and some terminal/command prompt usage. The process is straightforward, but requires one third party tool called Windows 10 disk image (ISO) file from Microsoft.

If you haven't already done so, you'll need to download the This is a quick 'how to' guide to make a bootable Windows 10 USB drive/stick Split size (previously 4000 MB) and suggesting legacy BIOS mode.

Update : Thanks to Parul Jain for emailing in with the 3800 MB

Run windows iso to usb tool on mc