A secretary in the office where i worked some years ago, was trying to save her data on a floppy. She kept complaining that the (single sided) 5 1/4" disk was losing her data.
Well, I was asked to investigate. I unwilling approached the gallows.
I asked her to show me what she did when she saved her data. She took out a new disk, inserted it into the drive, formatted it, saved her data, and removed the diskette without a hitch. She then proceeded to peel off a new label from the roll of labels, and carefully applied it to the disk.
No problems so far.
She then took the disk, inserted it into the typewriter, scrolled it through the roller, and neatly typed her label.
I found the problem on the first try.