没想到煲硬盘门道多：
tr '\000' '\377' < /dev/zero | dd of=/dev/null
tr '\000' '\226' < /dev/zero | dd of=/dev/null
cryptsetup open --type plain /dev write_here -d /dev/urandom -c aes-cbc-essiv:sha256 -h SHA512 -s 256
dd if=/dev/zero of=/write_here https://twitter.com/m6sig/status/1198429798432948225

https://t.me/private_channel_c14370a/3184