Enter the following command to find your SD card's name:
You can identify your card by size and partition type. You should see the Raspberry Pi
boot partition type of Windows_FAT_32 next to the drive.
For example, my card's name is
Use the following command to use the dd utility to backup your Raspberry Pi SD card, changing
/dev/disk1 to your disk's name and path:
sudo dd if=/dev/disk1 of=~/PiSDCardBackup.dmg
Enter your password when prompted.
This will create a file named
PiSDCardBackup.dmg in the user directory (
~). To change the filename or put it somewhere else, you can change
~/PiSDCardBackup.dmg to something else. For example,
~/Documents/OctoPrint.dmg will name the file
OctoPrint.dmg and place it in your
While the backup process is running, you should just see a flashing
Don't forget to safely eject your card before removing it from your computer to prevent data corruption. You can do this in Finder by clicking the eject icon in the sidebar. You're all done!
To restore your backup or clone it onto another SD card, reinsert it into your computer and use the following commands:
diskutil unmountDisk /dev/disk1 sudo dd if=~/PiSDCardBackup.dmg of=/dev/disk1
Be sure to replace
/dev/disk1 once again with your card ID, and specify the proper location for the backup image you're restoring from.
When you're finished, eject your SD card once more.