Is there any Raspberry Pi Live Boot or Read Only Distros available? I was wondering, since the EE stack exchange normally gets some questions regarding safe power disconnect on the RPi, if such a distro existed. There are many Linux distros that come on Live Boot Cds or flash drives, which unpack from the cd and run completely from memory (One I'm personally familiar with was DamnSmallLinux, another being BackTrack). Most embedded systems in consumer products are also run almost entirely on ram disks, to the point they go entire boot cycles without writing a single thing to flash.
The main goals being
1) to prevent file corruption on the SD card if power is lost unexpectedly, without having to rely on UPS or Battery solutions.
2) running programs from boot to shutdown (or power loss) that need no writing to the sd card.
So is there any such Targeted to the RPI distro, or any groups planning to make one?