Someone suggested punching a notch in them and using
both sides.
Was that even possible on 8" disks?
Sure, but you have to punch an offset index hole:
https://imgur.com/a/6vdR6NE
That's a single-sided flippy 8" diskette (it's also hard-sector but
that's not really relevant). 8" diskettes have different positions for the index
sensor window depending on whether it's single or double sided.In the above pictures,
the rightmost hole is the original index window. If it were a factory double-sided
diskette (for use in drives with two heads), that index window would be further to the
right.
Thanks,
Jonathan