The new Raspbian image is over 4GB. This introduces some challenges when trying to write it to an SD card. In particular, unzipping it on Windows and Mac using their built-in tools will fail because they’re a bit naff. Alex Eames has blogged about a lesser-known (but actually quite lovely) tool called Etcher. Etcher is a piece of image writing software that is fully capable of taking a zipped > 4GB image and writing it to your card. That’s right… it’ll write it from the ZIP file. However, if you want to unzip it, Alex has also given ways that you can do this using a couple of extra pieces of software. Read his blog post here.