blkdiscard

Discards device sectors on storage devices. Useful for SSDs.

TLDR

Discard all sectors on a device, removing all data

$ blkdiscard /dev/[device]
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Securely discard all blocks on a device, removing all data

$ blkdiscard --secure /dev/[device]
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Discard the first 100MB of a device

$ blkdiscard --length [100MB] /dev/[device]
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