Flashing the Image

This page provides details for flashing the webOS IoT image to a microSD card. In addition, this page describes how to verify the flashed image on the target device.

Before You Begin

Make sure you have completed the following:

Build the webOS IoT image on a Linux machine. For more information, see Building webOS IoT.
Insert a microSD card in the microSD card reader device connected to the host machine.

Flashing the Image

This section describes how to flash the webOS IoT image to a microSD card.

First, change directory to where the image is located.

$ cd <path where the image is located>

Check the device name of the microSD card using the following command.

$ sudo fdisk -l

To flash the image to the microSD card, run the following commands.

$ sudo umount /dev/sd<xN>
$ sudo dd bs=4M if=./<webOS IoT image> of=/dev/sd<x>
$ sudo umount /dev/sd<xN>

sd<xN> denotes the device name of the microSD card, where N is a number suffix.
For dd command, you must pass sd<x> (without the suffix number) to the of operand. sd<x> indicates the mass storage device, not the partition.

Note

If CoreUtils 8.24 or higher is installed on your system, you can use the status=progress option to the dd command to see the copying process.

$ sudo dd bs=4M if=./<webOS IoT image> of=/dev/sd<x> status=progress

Otherwise, the shell prompt will not display any message, so you need to wait until the copying process is complete. For more information on dd command, see the Wikipedia page on dd.

Flashing Command Example

$ sudo umount /dev/sdb1
$ sudo dd bs=4M if=./webos-iot-image-raspberrypi4.rootfs.wic of=/dev/sdb
$ sudo umount /dev/sdb1

Next Steps

After you finish flashing the webOS IoT image to the microSD card, you must set up a network on the image. See Network Setup.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 and sample code is licensed under the Apache License 2.0.

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