How to back up a SD card image, i.e. Raspberry Pi OS

Setting up a Raspberry Pi to finally run how you want it, can take a while. And it is super annoying when, for whatever reason, the SD card becomes corrupt, and you need to reinstall everything. Lame. Luckily, there is a tool with which a SD card can be imaged and stored away in waiting, until its triumphant return; it isn't the backup image you need right now, but it is the image you deserve...

Enter Win32 Disk Imager. It is likely something you've used before anyways when setting up your RasPi, because the official documentation speaks highly of its use. For our purposes, we just need a simple backup image:

1. In the Image File textbox, select your save path and file name
2. Make sure the right Device (i.e. SD card's drive letter) is selected.
3. Hit the "Read" button.

That's it! If you ever need to reload this image onto a blank SD card, just load the backed up image and hit the "Write" button instead.

Another related good read here, with suggestions for Mac/Linux.