> On 2020-10-21, at 09:06, Francesco Messineo <francesco.messineo_at_gmail.com> wrote: > >>>>> Does anyone has been able to transfer Commodore C900 disks to a 5.25" double >>>>> density, double track disk? >>>> >>>> What do you mean by "transfer the disks"? Do you mean using DSDD disks >>>> instead if DSQD in the C900 floppy drive? it is possible just like with >>>> the 8250, most DSDD disks can be formatted but they won't be very reliable. >>> >>> Never had a problem with using DSDD in a 8050 drive which is a 8250 with >>> only a single head. > > there's no "QD" magnetic media, SD/DD/QD magnetic media was always the > same (300 oersted). Right, but AFAIU that's not the point > Probably the diskettes sold as QD/96 tpi were just higher quality. Delivering higher resolution without changing the magnetisation characteristics. Similar to "Type I" in analogue audio tapes. One used the same oersteds/bias/eq for different tapes of the same "Type I" but the results could be _hugely_ different between different tapes. -- SD!Received on 2020-10-21 11:00:03
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