Any tips on creating a backup image of the SD card on OSX?

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1

This isn't an OctoPrint-specific question, but I bet some users here have run into this, and might have some suggestions. I'm doing some development related to OctoPrint. I have an installation of OctoPi running OctoPrint, and some additional configurations set. I'd like to make a backup/clone of the SD card so that, if the system becomes unstable, or I'd just like a fresh copy to test against, I can re-apply the backup.

I'm running OSX and I've tried creating a backup image of my OctoPi SD card using balenaEtcher, Carbon Copy Cloner, and Apple's Disk Util, but nothing seems to work. For example, when I use Disk Util to create an image of the SD card, the image is created, but when I try to restore onto another SD card (the same brand and same size even) I get "Error 22 - Invalid Argument".

I've tried creating a backup image and then restoring several times, with several different applications, but nothing is working end-to-end so far, and I was wondering 1) how are the restore/install images for OctoPi made? and 2) if anyone has a recommended way (and preferably with instructions) for creating a backup image.

Thanks,

Jeff

2

I have a USB SD (and microSD) card reader so I just plug it into my RPi and use rpi-clone.

The advantage of having this second microSD card available on the RPi is I can mount the partitions and copy individual files or directories from one OS instance to another.

3

Thanks @b-morgan, that worked great! I wasn't even aware of rpi-clone.

4

I like the simple answers left here but they didn't help me as a noom, I have no idea as to how to use rpi clone. BUT I find a wonderful post that looks complex, but is the easiest and best way I have found to make a rliable and easy to verfy backup of my Rbpi. It also includes instructions on how to automatically make backups periodically.

5

Hi!
Win32 disk imager working but tricky the "write sd to .img file" mode aka "read SD".

device: select first SD partition (fat)

picture:

enter the path and file name manually in the "image" textbox and press the "read" button.
for example: D:\download2\3d print\octoprint\image.img

Need exit the "google drive" and other not valid device and eject the g: drive if won't started the win32 disk imager.