dcfldd
Enhanced version of dd for forensics and security. More information: https://dcfldd.sourceforge.net/.
- Copy a disk to a raw image file and hash the image using SHA256:
dcfldd if=
/dev/disk_device of=
file.img hash=sha256 hashlog=
file.hash
- Copy a disk to a raw image file, hashing each 1 GB chunk:
dcfldd if=
/dev/disk_device of=
file.img hash=
sha512|sha384|sha256|sha1|md5 hashlog=
file.hash hashwindow=
1G