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Embedded Linux tips and tricks

50 bytes added, 17:45, 23 February 2022
How to write .wic image files to SD cards
==How to write <code>.wic</code> image files to SD cards==
[https://www.yoctoproject.org/ Yocto ] build system can generate [https://www.yoctoproject.org/docs/2.4.2/dev-manual/dev-manual.html#creating-partitioned-images-using-wic <code>.wic</code> image files]. These files are usually written to SD cards to create bootable devices.
The simplest way to write such images to SD cards is to use the [https://www.balena.io/etcher/ Balena Etcher] tool, which is available for Linux, macOS, and Windows hosts. Using Etcher is straightforward, nonetheless many tutorials and examples are available on the Internet.
Advanced users can also use the well-known [https://en.wikipedia.org/wiki/Dd_(Unix) <code>dd</code>] utility. This tool should be avoided unless the user knows what they are doing. If the target device is not specified properly, <code>dd</code> can wipe out all the data on a host's disk drive! For more details, see for instance [https://opensource.com/article/18/7/how-use-dd-linux this article].
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