http://jentyxddh2rf47gd3e43kuebyn2xsv6h72gzh46oe4rxyovvm7xe5ead.onion/overwriting-disks.html
I like pv for this task. Install pv as a package. # pkg_add pv Here, I ’ m plugging in a flash drive for testing purposes and running dmesg(8) for the device name. $ dmesg
[...]
sd5 at scsibus6 targ 1 lun 0: < , USB DISK 3.0, PMAP > removable serial.655716319B52EBB03391
sd5: 15120MB, 512 bytes / sector, 30965760 sectors Incidentally, this already gives us the info we need to progress forward
(number of sectors and number of bytes per sector).