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I am sending ATA commands to SATA HDD using IOCTL_ATA_PASS_THROUGH in windows. IDENTIFY DEVICE (ECh) ATA commands returns 256 words of data. Word 128, Bit 3 is set in the returned data, and according to ATA specs the bit denotes Device is in security frozen mode. Because of that, ATA Security Commands are getting aborted. I tried power off/Hardware Reset as mentioned in ATA specs to disable Security Frozen mode. But the device is stil in security frozen state. I am doubting on windows atapi / ataport driver for making HDD security frozen.

How to disable this security frozen mode?? Please Help me...

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migrated from Mar 20 '13 at 12:21

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Isn't the whole point of security freeze that the disk's contents can't be accessed anymore? – Juhana Mar 19 '13 at 9:47
Disk contents can be accessed, but only ATA security commands(like security set passwword, disable password etc..) will get aborted. Remaining commands are running well. – user2185864 Mar 20 '13 at 4:35
Relevant. – tne Jan 9 at 21:11

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