# genisoimage > Pre-mastering program to generate ISO9660/Joliet/HFS hybrid filesystems. > More information: . - Create an ISO image from the given source directory: `genisoimage -o {{myimage.iso}} {{path/to/source_directory}}` - Create an ISO image with files larger than 2GiB by reporting a smaller apparent size for ISO9660 filesystems: `genisoimage -o -allow-limited-size {{myimage.iso}} {{path/to/source_directory}}`