If you want to know how make bootable USB drive click here don’t need to install any software, you canĭo that using DISM tool from the command prompt. you can do that easily in windows Operating system. you can’t directly copy that file,īecause the FAT32 file system maximum file size is limited to 4GB.if you want to copy install.wim file you need to split the file into 2 files. In this article, I’m only focusing on how you can copy install.wim file to your FAT32 file system USB drive.