I discovered an awesome tool for cloning micro-SD cards like those used in the Raspberry Pi 3 computers for the project I’m working on. It’s called ApplePi-Baker and it’s doing a fantastic job of speeding up that process. Too bad it doesn’t work on operating systems other than OS X.
I’m guessing that it’s using the underlying/poorly-documented drive devices on the Apple like
/dev/rdisk1 rather than
/dev/disk1 (subtle, I know), but it’s blazingly fast by comparison and it seems to work. And when I say “work” I mean: you don’t have to go research all the many ways of using the
dd command, for example.
Note that you’ll want a few available gigabytes on the destination drive you’re backing up to. But the program has several compression options. For example, backing up a 16GB image to a ZIP file only needed about 3.5GB when finished so it’s good when your space is limited.
It’s a little scary at first since it boldly asks for your Admin password as it gets started, as combined with the fact that it isn’t digitally-signed with an authorized Apple Developer key. That said, you should be able to trust it since it does what it says it does and nothing else. Note that after you download it, you can’t immediately run it. You’ll need to open Finder, go to Downloads and then Ctrl-click it and choose Open the first time, then click the Open button. Having done this once, you may then drag it to your Applications folder and then run it normally after that.