blkdiscard

Discards device sectors on storage devices. Useful for SSDs. More information: https://manned.org/blkdiscard.

• 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