if your first assertation is correct, and ssd's use internal mapping of physical and logical sectors, then your suggestion with wiping/rewriting would not work.

if your first assertation is correct, and ssd's use internal mapping of physical and logical sectors, then your suggestion with wiping/rewriting would not work. i know that per SMART, disks (hdd and ssd) have to have extra space that will be used if an active sector goes bad, but idk about the total internal remapping on ssd's.