sudo time hdparm --user-master u --security-erase mypassword /dev/sda

/dev/sda:
 Issuing SECURITY_ERASE command, password="mypassword", user=user
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 04 51 40 00 21 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 04 51 40 01 21 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0.00user 0.00system 0:00.07elapsed 1%CPU (0avgtext+0avgdata 1892maxresident)k
0inputs+0outputs (0major+77minor)pagefaults 0swaps

sda      8:0    0 111,8G  0 disk
├─sda1   8:1    0   512M  0 part /boot/efi
├─sda2   8:2    0 103,4G  0 part /
└─sda3   8:3    0     8G  0 part [SWAP]
sdb      8:16   0 931,5G  0 disk
sr0     11:0    1  1024M  0 rom