用来开启主轴电机转动，停转，寻道，读，写，始终读，始终写，读比较，睡眠，设置重试等等的指令。

Commands to spinup, spindown, seek, read, write, read long, write long, read compare, sleep, set retries, etc.

youdao

用来开启主轴电机转动，停转，寻道，读，写，始终读，始终写，读比较，睡眠，设置重试等等的指令。

Commands to spinup, spindown, seek, read, write, read long, write long, read compare, sleep, set retries, etc.

youdao