Originally Posted by
Loren Pechtel
Having a large area that's written once and not changed matters for flash drives but it doesn't matter for SSDs. As the life wears down on other cells they'll take that stationary data and move it.
Furthermore, a SSD that end-of-life locks should become read only, not simply vanish.
Actually, SSDs that exceed their endurance limits tend to stop responding after a reboot. They do go read-only for hopefully long enough to copy over anything critical, but as OP found out, that's not guaranteed.