SSD (Formerly FFD) Ultra ATA 2.5"
19
Product Specification and User Manual
41-PS-0104-00 Rev. 2.3
4.6. Vendor-Specific Commands
4.6.1.
Sanitize
4.6.1.1 Sanitize (Purge) Command Interface
The Sanitize command enables distraction (purging/declassifying) of the information on the
media.
Bad blocks accumulated since the unit was manufactured will undergo the same process as good
blocks. The default sanitize procedure can be activated using either the Sanitize command itself,
or using the Sanitize Interrupt command.
The Sanitize command provides a high degree of flexibility, which enables executing
declassification procedures defined in various standards by providing different arguments to the
command.
Specifically, the Sanitize command parameters enable defining up to three stages of the
declassification process. Each stage can be either erasing the media and overwriting it with a
given character, or erasing the media and filling it with random information a specified number of
times.
If the number of erase-fill cycles is 0, the Sanitize command performs a complete erase but does
not fill the media. This is the fastest option; and is also known as the Security Erase option.
The structure of the Security Erase command is described in Table 9.
Table 9: Vendor-Specific Sanitize Command
Register
7
6
5
4
3
2
1
0
Features
Secondary operation code
Sector Count
Master command
Sector Number
Parameter 1
Cylinder Low
Parameter 2
Cylinder High
Parameter 3
Device/Head
1
1
D
Partition Mask
Command
82h
The Secondary Operation code may be one of the following:
0x21 (corresponding to the character „!‟): Immediately activates the Sanitize procedure.
0x22 (corresponding to the character „”‟): Immediately activates the Sanitize procedure with
bad-block management according to IRIG-106
0x44 (corresponding to character „D‟): Saves the specified parameters as the default Sanitize
configuration, but does not activate the Sanitize procedure itself.
0x45 (corresponding to character „E‟): Saves the specified parameters as the default Sanitize
configuration according to IRIG-106, but does not activate the Sanitize procedure itself.
