What is the problem?
Seagate加密驱动器几乎阻止了所有的techno命令。例如，小型号1ER162,1ER1624和1ER166的Greanada驱动器输入任何终端命令都回复“Diagnostic Port Locked”。所以你无法构建磁头位图，读取和修复sys文件等
Seagate Self-Encrypting drives is blocking almost all techno commands. For example, Greanada drives with part numbers 1ER162,1ER1624 and 1ER166 reply “Diagnostic Port Locked” to any terminal command. So you can’t build headmap, read and fix sys files etc.
解决办法是什么？
What is the solution?
我们在ROM上做了一个特殊的添加，可以在运行微代码的时候捕捉到控制和解锁技术的模式。
We made a special addition to ROM which is able to catch the control and unlock techno mode at moment of running microcode from surface.
通过简单按下按钮可以分两步进行解锁
Unlocking is performed in two stages with a simple press of button
阶段1.驱动器的准备：ROM补丁
Stage 1. Preparation of the drive: ROM patch
阶段2.解锁驱动器：发送一个特殊的会话密钥
Stage 2. Unlocking the drive: sending a special session key
第一个按钮（Tech mode unlocking preparation, Grenada”）通过启动代码保存ROM，修改它并将修改后的写回HDD。第二个按钮（“Unclock Tech, drive prepared by utility”）在终端命令终止后，发送一个特殊命令来解锁techno模式。
First button (“Tech mode unlocking preparation, Grenada”) save the ROM via boot code , modify it and write modified image back to HDD. Second button (“Unclock Tech, drive prepared by utility”) send a special command to unlock techno mode. After that terminal commands become working:
