I can't speak to the Amiga, but my dad recently went through a box of 3.5s from the 90s, and they were all perfectly readable. I've got some 5.25s my C64 can re

I can't speak to the Amiga, but my dad recently went through a box of 3.5s from the 90s, and they were all perfectly readable. I've got some 5.25s my C64 can read just fine, too (I could even play HHGttG if I wanted to wait a minute per command to learn I died an hour ago without realizing it).