The river Styx

After having rowed across this river, the memory is erased. Basically, on more areas, you have to start over.

Figuratively speaking, you might say that almost everything is trashed, the trash is emptied, and the hardware is destroyed or transformed and recycled. It can still be found on the Special Internet but not just like that, and this is probably also appropriate. For the new hard drive can’t contain it all - at once.

However, This Internet can.