Saturday Mac riddles 148

Here are this weekend’s riddles to entertain you through family time, shopping and recreation.

1: Tough back problem succeeded the floppy.

2: Lipid from 1977 maps stored data still in a flash.

3: Wedge that’s a blocked atomic storage unit.

To help you cross-check your solutions, there’s a common factor between them.

I’ll post my solutions first thing on Monday morning.

Please don’t post your solutions as comments here: it spoils it for others.