## Before you start

This image is for the NanoPi M3 and the NanoPC-T3.
The NanoPC-T3 boots from the onboard eMMC before the microSD card. Use the BOOT key to boot from the microSD card.

## Installation

1. Insert the card into the board.
2. On the NanoPC-T3, hold the BOOT key.
3. Connect the power supply.

## Notes

- Armbian uses 4 of the 8 CPU cores. The bootloader leaves the second CPU cluster non-coherent.
- A warm `reboot` can hang. Disconnect and connect the power supply to restart the board.

## Rescue

Use this if the board does not boot after a write to eMMC.

1. Insert a microSD card with a working Armbian image.
2. Hold the BOOT key and connect the power supply. The board boots the
   microSD card instead of the eMMC.
3. Rewrite the eMMC from the running system, or erase it. Identify the
   eMMC with `lsblk`; it is the `mmcblk*` device that is not the card you
   booted from:
```sh
sudo blkdiscard -f /dev/mmcblkX
```
4. Power off and remove the microSD card.