i am trying to back up my sd-card(16GB) with Mac using:
sudo dd if=/dev/rdisk3 of=~/Desktop/raspberrypi20161117_r.dmg bs=1m
Output:
dd: /dev/rdisk3: Input/output error
2996+0 records in
2996+0 records out
3141533696 bytes transferred in 170.479861 secs (18427594 bytes/sec)
The Input/output error always comes when 3141533696 bytes transferred.
dd output with /dev/disk3
Outupt:
dd: /dev/disk3: Device not configured
2996+0 records in
2996+0 records out
3141533696 bytes transferred in 1507.614168 secs (2083778 bytes/sec)
The sd-card still works with raspberry pi...
I hope someone can help me to backup the sd card
Thanks