I remember flipping these disks manually in my CPC drive, to use both sides.
Another cost-saving measure: 3.5" floppies couldn't be flipped, so needed heads on both sides. Actually (TIL!) the first Macs had single-sided 3.5" drives, which wasted half the capacity of the disk (not sure if there were single-sided disks too?).
alt Hacker News
Another cost-saving measure: 3.5" floppies couldn't be flipped, so needed heads on both sides. Actually (TIL!) the first Macs had single-sided 3.5" drives, which wasted half the capacity of the disk (not sure if there were single-sided disks too?).