This component can be included in a build to support writing a sparse FVM to a a ramdisk during boot, which results in a temporary FVM which is lost once the system is rebooted.
This enables trying Fuchsia without worrying about paving a device or sacrificing a computer to try it on.
$ echo 'boot.usb=true bootloader.default=local devmgr.bind-eager=usb_composite' > cmdline $ fx set workstation_eng.x64 && fx build
/dev/sdX- replace X with the appropriate drive letter.
$ fx make-fuchsia-vol --use-sparse-fvm --cmdline cmdline /dev/sdX