Which methods would likely guarantee that hard drive data is irrecoverable from advanced recovery methods?

Choosing methods that ensure hard drive data is irrecoverable from advanced recovery techniques involves understanding the techniques used to erase data effectively.

The option that includes a crypto erase and purge is the most effective. A crypto erase utilizes encryption to secure data on the drive; when the cryptographic keys are destroyed or made inaccessible, the encrypted data becomes useless. This method is particularly effective because it renders the original information irretrievable without decryption keys.

The purge method goes a step further by ensuring that the data is not just made inaccessible but also actively overwritten or physically removed, depending on the specific purge method used. This could involve multiple overwrites of the hard drive to ensure that remnants of files cannot be recovered through forensic analysis.

In contrast, while a quick format can remove the file allocation table, it doesn't effectively overwrite the data stored on the drive, making it vulnerable to recovery. Disk defragmentation rearranges data but does not erase it; hence, it would not contribute to irrecoverability. Overall, combining crypto erase with purge techniques creates a robust approach to ensure that data on a hard drive cannot be restored through advanced recovery methods.