dd (disk destroyer)
copy ISO to disk with pv instead of dd
pv < linux-image.iso > /dev/sdx
secure delete disks
dd if=/dev/urandom status=progress conv=notrunc bs=4M oflag=dsync of=/dev/disk/by-id/…
applications
# gzip dd output dd if=/dev/hdx | gzip -c | pv >/backup/hdx.img.gz # dd gzipped image gunzip -c /backup/hdx.img.gz | pv | dd of=/dev/hdx
mount image with multiple partitions
# losetup --partscan --find --show sd.img /dev/loop0 # lsblk | grep loop loop0 7:0 0 7,4G 0 loop ├─loop0p1 259:0 0 56M 0 loop └─loop0p2 259:1 0 3G 0 loop # mount -t ext4 /dev/loop0p2 sd/ # losetup -d /dev/loop0