wrong fs type, bad option, bad superblock on /dev/sr0, missing codepage or helper program, or other error. code example
Example 1: wrong fs type, bad option, bad superblock on /dev/loop0, missing codepage or helper program, or other error+dd image
sudo mount -o rw -t ext4 /dev/mapper/loop0p2 mount_target/
Example 2: wrong fs type, bad option, bad superblock on /dev/loop0, missing codepage or helper program, or other error+dd image
sudo kpartx -a raspberry-backup-2014-04-10.img