Ddrescue
From Federal Burro of Information
https://www.gnu.org/software/ddrescue/
https://anarc.at/services/archive/rescue/
https://www.cgsecurity.org/wiki/TestDisk_Download
ddrescue /dev/sdb3 /data/sdb3.ddrescue /data/sdb3.mapfile
https://www.gnu.org/software/ddrescue/
https://anarc.at/services/archive/rescue/
https://www.cgsecurity.org/wiki/TestDisk_Download
ddrescue /dev/sdb3 /data/sdb3.ddrescue /data/sdb3.mapfile