I have a Cubietruck with a USB DAC, a battery, and an SSD attached to SATA. Whenever I attempt to poweroff from the Rune Audio interface when the Cubietruck is plugged in to AC current, the Cubietruck reboots. When I poweroff from Rune Audio on battery power, on the other hand, the unit completely shuts down.
I know I can shut down the unit on AC power using the power switch, but won't that potentially damage either the SD card or the SSD? Or is there a way to code the power switch to perform a safe shutdown, with proper unmounting of the SD and the SSD?