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The Ultimate Guide to Managing HDD Security: What You Need to Know About ATAPWD and Hard Disk Password Utilities

If a drive is locked and you attempt to clear the security using the Master Password with the "Maximum" security level setting, the drive controller will trigger an internal secure erase. This wipes all user data irreversibly.

To understand why people still look for ATAPWD, you have to understand how hard disk locking works. The ATA standard specifies several security states:

The security mode chosen when locking the drive determines your data recovery options: