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Locked and Unlocked Behavior
ATA Commands behavior
The table below describes how basic ATA commands behave on encryption drives in the locked and unlocked
states by TCG Enterprise feature.
Command
Locked Band
Unlocked Band
Notes
Check Power Mode
Executable
Executable
Configure Stream
Executable
Executable
Crypto Scramble Ext
Command aborted
*1
Any Band is Locked
Device Configuration Restore
Executable
Executable
Device Configuration Freeze Lock
Executable
Executable
Device Configuration Identify
Executable
Executable
Device Configuration Set
Executable
Executable
Download Microcode
*2
*2
Depend on DL port lock
Download Microcode DMA
*2
*2
Depend on DL port lock
Execute Device Diagnostic
Executable
Executable
Flush Cache
Executable
Executable
Flush Cache Ext
Executable
Executable
Format Track
Command aborted
*1
Any Band is Locked
Identify Device
Executable
Executable
Idle
Executable
Executable
Idle Immediate
Executable
Executable
Initialize Device Parameters
Executable
Executable
NCQ NON-DATA
Overwrite Ext
Command aborted
*1
Any Band is Locked
Read Buffer
Executable
Executable
Read DMA
Command aborted
Executable
Read DMA Ext
Command aborted
Executable
Read FPDMA Queued
Command aborted
Executable
Read Log Ext
Executable
Executable
Read Log DMA Ext
Executable
Executable
Read Multiple
Command aborted
Executable
Read Multiple Ext
Command aborted
Executable
Read Native Max Address
Executable
Executable
Read Native Max Ext
Executable
Executable
Read Sector(s)
Command aborted
Executable
Read Sector(s) Ext
Command aborted
Executable
Read Stream DMA Ext
Command aborted
Executable
Read Stream Ext
Command aborted
Executable
Read Verify Sector(s)
Command aborted
Executable
Read Verify Sector(s) Ext
Command aborted
Executable
Recalibrate
Executable
Executable
Request Sense Data Ext
Executable
Executable
*1: Although the band is unlocked, command is aborted when any band is locked.
*2: This is dependency in state of FW DLOAD Port Locked. Command is aborted when port is locked.
Table 86 Command table for TCG Enterprise Device Lock Operation -1
124
Western Digital Ultrastar DC HC310 SATA Product Manual