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blkdiscard

Discards device sectors on storage devices. Useful for SSDs.

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• Discard all sectors on a device, removing all data:

blkdiscard /dev/{device}

• Securely discard all blocks on a device, removing all data:

blkdiscard --secure /dev/{device}

• Discard the first 100 MB of a device:

blkdiscard --length {100MB} /dev/{device}

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