Wait'll you guys hear about buying more RAM and using it as a RAM disk.
none /tmp tmpfs defaults,size=4G 0 0
You might consider these common mount options for a little extra security:
noexec,nosuid,nodevWhile /tmp is a great world-writable place, these restrict it from being home to executables/devices -- common sources of abuse
I picked these up through some compliance benchmarks, commonly applied to /tmp -- I'd exercise caution with these elsewhere, they're fairly restrictive
Or just skip that install to media stuff altogether, and run from some live distro booted into RAM, and running from there :-)