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How do you "wipe the disk" ?

Serious question: is there a sane, working, single solution to ensure that ? Flash-based devices are so complicated (versus the old rusty devices)

Anyway, this sound exhausting

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If you're using a secure disk encryption technology, and you manage to clear the keys from the TPM or overwrite the header containing the KDF salts and other metadata, that should render the device data unrecoverable.

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