Bad blocks bad blocks what ya gonna do, what ya gonna do when they come for you.

Hard drives fail hard or smooth, SSDs fail hard ! On a hard drive, we can picture how the blocks are stored (sequentially). On an SSD, there is a remapping of blocks in silicon+firmware, and this added layer adds its own bugs [0] [1].

[0] https://blog.elcomsoft.com/2019/01/why-ssds-die-a-sudden-dea...

[1] https://www.anandtech.com/show/6503/second-update-on-samsung...

(edit : added one reference more)