ATA : 硬碟密碼

在Bios底下常會看到兩種密碼可以設定, Bios密碼 / HDD(硬碟)密碼

這邊討論的是HDD 密碼, follow by ATA spec，首先，簡介如下

HDD User Password and HDD Master Password:

There are two levels of the HDD Password, the HDD User Password and the HDD master Password. If both levels of HDD Password have been registered, you can access the HDD by entering either of them.

以下兩個Identify table, 分別是設了ATA password (ATAIDSP.TXT)和未被設ATA password(ATAID.TXT) 時硬碟的identify傳回值