How to make a backup of SD card?

[Onionhead]

I would like to make a backup copy of  moOde 5.0 using MAC OS. I have expanded the partition via moOde UI.  Assume  sd card is disk3

In the past  was able to do so using this command : sudo dd if=/dev/disk3 of=/Users/Lt1user/Documents/moode.img count=6242304 bs=512

Can this command be used for 5.0?  Thanks

[Tim Curtis]

Yes, thats the correct command. If you have expanded the file system to the max size of the SDCard the backup can take a very long time depending on the size of the card.

Below is what I use. I always do "diskutil list" just to confirm the SDCard gets mounted to /dev/disk3

Code:

diskutil list
diskutil unmountDisk /dev/disk3
sudo dd if=/dev/disk3 of=/Users/Lt1user/Documents/moode.img count=6242304 bs=512
diskutil eject /dev/disk3

[Onionhead]

Yes, thats the correct command. If you have expanded the file system to the max size of the SDCard the backup can take a very long time depending on the size of the card.

Below is what I use. I always do "diskutil list" just to confirm the SDCard gets mounted to /dev/disk3

Code:

diskutil list
diskutil unmountDisk /dev/disk3
sudo dd if=/dev/disk3 of=/Users/Lt1user/Documents/moode.img count=6242304 bs=512
diskutil eject /dev/disk3

 Perfect will give that a try later on. Not sure you have seen my recent posts but 5.0 and my NAS don't get on. Don't know how it happened but think I finally have all music files on NAS synched. Imperative that I get a backup before my luck runs out. Good day.