If you're able to attach the disk to any computer running a Unix/Linux
OS, a simple dd command should be able to wipe the disk clean:
dd if=/dev/urandom of=/dev/sdb bs=1M status=progress
obviously you'd want to make sure that /dev/sdb is the disk you want to
erase.
On 2025-05-03 4:46 p.m., Brian Knittel via cctalk wrote:
Passing on a request: anyone know of a way to erase user data off a Mac SE hard
disk that will leave the disk and Mac OS intact? The machine works and could go
to a new home but has privileged medical data on it so just deleting files
isn’t sufficient — the free space has to be overwritten. Are there any
utilities available on floppy disk that could do it? Plan B is taking a
sledgehammer to the drive, but seems a waste to go right to euthanasia if
there’s another option.
