Also see: https://wiki.archlinux.org/title/Solid_state_drive/Memory_cell_clearing https://wiki.archlinux.org/title/Solid_state_drive/Memory_ce... https://www.

Also see: https://wiki.archlinux.org/title/Solid_state_drive/Memory_cell_clearing https://wiki.archlinux.org/title/Solid_state_drive/Memory_ce... https://www.usenix.org/events/fast11/tech/full_papers/Wei.pdf https://www.usenix.org/events/fast11/tech/full_papers/Wei.pd... Edit: see section 3.2.2 in the PDF (and the corresponding table 2): > In most cases, overwriting the entire disk twice was sufficient to sanitize the disk, regardless of the previous state of the drive. There were three exceptions: about 1% (1 GB) of the data remained on Drive A after twenty passes This is about normal overwriting, however. The fastest random overwriting program on Linux I know of is `shred`