After wiping a drive with dd if=/dev/zero of=/dev/sdb, verify it’s truly zeroed:
dd if=/dev/sda | hexdump -C | grep [^00]
If data appears, repeat the zero-write operation multiple times for complete data destruction.
After wiping a drive with dd if=/dev/zero of=/dev/sdb, verify it’s truly zeroed:
dd if=/dev/sda | hexdump -C | grep [^00]
If data appears, repeat the zero-write operation multiple times for complete data destruction.