I was trying to workout how to shutdown the pi into some sort of "standby" state. I typed something like sudo shutdown, or sudo poweroff. I thought I had suceeded because it did shutdown and I saw the red led was on after that. Anyway now it won't start up. The green (OK) LED blinks about 5 or 6 times, so according to this and to what I have read, a .elf file is not found.
Does anyone know anything about this or have a similar experience?