I remember 8 in for DASD and 5+ in for 3274s, but not 12 inch. Sent from [Proton Mail](https://proton.me/mail/home) for iOS
On Thu, Jul 11, 2024 at 12:31 PM, Radoslaw Skorupka <[[email protected]](mailto:On Thu, Jul 11, 2024 at 12:31 PM, Radoslaw Skorupka <<a href=)> wrote: > Ladies and gentlemen, > > Let me emphasize: I asked about *twelve* inch diskettes. > :-) > > I'm aware of 8" diskettes, the first size, Alan Shugart, microcode load, > 4381, etc. ;-) > And it is about diskettes, not hard disk drives. > > BTW: the same book mention Burroughs solution: stack of 256 diskettes, > also 12 inch. However (according to the book) it have never released to > production. > > In fact I have never ever heard about such big format. AFAIK no IBM > history page mentions it. > > -- > Radoslaw Skorupka > Lodz, Poland > > W dniu 11.07.2024 o 18:00, Radoslaw Skorupka pisze: >> I just found information in some book that IBM mainframes used 12 inch >> floppy diskettes. Late 70's. >> >> Anybody heard about such diskettes? >> > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
