: At least 30GB of free space on your Mac's internal drive is recommended. Step 1: Download Boot Camp Support Software

: Typically, Macs from 2012 through 2014 are the last to officially support Windows 7 via Boot Camp. Models older than 2010 may require a physical installation disc.

Download the (e.g., version 5.0.5033 for many 2012 models) and copy the unzipped contents to your USB drive. Step 2: Prepare Boot Camp Assistant