![]() Fortunately flashing a card of similar size should take less than 4 minutes, way faster than the time needed to use the Raspberry Pi imager, configure Wi-Fi, update and upgrade software, and more, so performing these steps can be a real time saver! The steps aren’t complicated, but the initial imaging of a working SD card can take some time on older Macs (about 25 minutes for a 32GB card, but if you have a new Mac it may only take a few seconds). These instructions will demonstrate how to use a Mac to make a copy (image) of a microSD card with a working copy of Raspberry Pi software installed, and how to copy (flash) the image onto a new SD card, then install it in a Pi and (very important for wireless Pis) give the Pi a new hostname. Since it can take a while to install the Raspberry Pi OS, then perform configurations and installations for things like Wi-Fi networking, the update and upgrade of Pi software, installation of CircuitPython, and more, it can be useful to make a backup copy (called an image) of a working microSD card so that you can simply flash this backup copy onto a new SD card, then put this card into a new Pi and change its hostname. ![]() The better solution is to use ApplePiBaker, which you can find at For some reason Disk Utility now copies very fast, but the image created cannot restore into a working sd card. Updates for the latest macOS & Disk Utility seem to have rendered the procedures below unworkable. ![]()
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