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Re: How to Copy a Bootable SD card on a Mac

 

Thanks, David and David. Still no luck. I tried the following sequence using both "disk6" and "rdisk6". The resulting SD cards still won't boot.

¡­insert source SD card

diskutil list

diskutil unmountDisk /dev/rdisk6

sudo dd if=/dev/rdisk6 of=SDBackup2.dmg bs=16M conv=fsync status=progress

diskutil unmountDisk /dev/rdisk6

¡­remove source and insert destination SD card

diskutil unmountDisk /dev/rdisk6

sudo dd of=/dev/rdisk6 if=SDBackup2.dmg bs=16M conv=fsync status=progress

diskutil unmountDisk /dev/rdisk6

? ?...doug
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