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 Post subject: WD Purple 4TB Drive (Original HGST Manufacture) Stuck at ATA
PostPosted: Yesterday, 17:30 
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Joined: June 23rd, 2026, 19:04
Posts: 1
Location: اليمن
1. ​Victoria (PIO Mode): I attempted a Security Erase and it completed successfully according to the log (Security ERASE done). However, after performing a power cycle (Hard Reset), the drive locks itself up again immediately. When attempting to initialize it in Windows Disk Management, it throws an I/O device error.


2. ​SeDiv Utility: I switched over to the Hitachi/HGST architecture interface. Running the unlocking commands returns: Send Disable command successful! and Erase unit command sended!. But just like with Victoria, the moment I close the utility or restart the system, the drive goes back to being locked.



​It seems the password bypass/removal is only affecting the volatile RAM cache of the drive, and the lock configuration is persistently reloaded from the Service Area (SA) firmware upon reboot.

​I do have a backup folder provided by the vendor which contains an NVRAM_0.bin file under the HUA7220xxALA3 directory.

​My questions:

​Why is the drive reverting to a locked state even though the utilities report successful erasure/disabling commands?

​What is the exact step-by-step procedure in SeDiv to permanently write this clean NVRAM_0.bin file to the drive's firmware to clear the password for good?

​Is there a specific Module (like Mod 32 in standard WDs) that I should look for or modify within this native HGST microcode architecture?


​Any help or insights from the experts here would be highly appreciated.

​Thank you!


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 Post subject: Re: WD Purple 4TB Drive (Original HGST Manufacture) Stuck at
PostPosted: Yesterday, 18:10 
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Joined: September 8th, 2009, 18:21
Posts: 16982
Location: Australia
The ATA standard requires that the stored password by supplied to the drive before it will initiate a SECURITY ERASE UNIT command. This begs the question, why does the drive not abort the command in the absence of the correct password?

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 Post subject: Re: WD Purple 4TB Drive (Original HGST Manufacture) Stuck at
PostPosted: Yesterday, 20:03 
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Joined: March 8th, 2025, 18:07
Posts: 119
Location: Canada
Definitely suggests this disk is not ATA6 so an older manual may need to be reviewed

Secured disks, I refuse them as bitlocker is better security that cannot be read without the key

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