14 Dec
2007
14 Dec
'07
6:30 p.m.
Would I be more-or-less correct if I assumed that the bulk of hard-
sectored diskettes in use fell into two groups: 16-sector 5.25" and
32-sector 8"? I know that there are other physical formats, but I'm
wondering if that would have 90% coverage?
Thanks,
Chuck
14 Dec
14 Dec
6:37 p.m.
From: cclist at sydex.com
Would I be more-or-less correct if I assumed that the bulk of hard-
sectored diskettes in use fell into two groups: 16-sector 5.25" and
32-sector 8"? I know that there are other physical formats, but I'm
wondering if that would have 90% coverage?
Thanks,
Chuck
Hi Chuck
I have one application for 8 inch hard sectored and it is 32.
All of my 5.25 are 10 sectored. That is three completely
different manufactures and formats.
Dwight
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15 Dec
15 Dec
3:24 p.m.
Would I be more-or-less correct if I assumed that the bulk of hard-
sectored diskettes in use fell into two groups: 16-sector 5.25" and
32-sector 8"? I know that there are other physical formats, but I'm
wondering if that would have 90% coverage?
I am sure I've seen 10 sector 5.25" ones.
-tony
5:19 p.m.
Chuck Guzis wrote:
Would I be more-or-less correct if I assumed that the
bulk of hard-
sectored diskettes in use fell into two groups: 16-sector 5.25" and
32-sector 8"? I know that there are other physical formats, but I'm
wondering if that would have 90% coverage?
Jerome Fine replies:
For 5.25" diskettes, if you mean currently still in use,
then you are probably correct regarding 90% use of HD 5.25"
diskettes. But initially the use of 180K and 360K 5.25"
diskettes was probably 90% - did they use 9 sectors?
And as Tony stated, don't forget the RX50 5.25" diskettes
which used 10 sectors - if I remember correctly.
I suggest that what you really should do is to state the
percentage sales of DD (which cold be used both SS and DS)
versus HD (which were almost always used DS) diskettes for
any given year along with how many units were sold.
And then you might also want to look at the actual number
of floppy drives that were sold which are able to use a
given number of sectors.
Sincerely yours,
Jerome Fine
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5:53 p.m.
From: jhfinedp3k at compsys.to> > >Chuck
Guzis wrote:> > >Would I be more-or-less correct if I assumed that the bulk of
hard-> >sectored diskettes in use fell into two groups: 16-sector 5.25" and
> >32-sector 8"? I know that there are other physical formats, but I'm >
>wondering if that would have 90% coverage?> >> Jerome Fine replies:> >
For 5.25" diskettes, if you mean currently still in use,> then you are probably
correct regarding 90% use of HD 5.25"> diskettes. But initially the use of 180K
and 360K 5.25"> diskettes was probably 90% - did they use 9 sectors?> > And
as Tony stated, don't forget the RX50 5.25" diskettes> which used 10 sectors -
if I remember correctly.> > I suggest that what you really should do is to state
the> percentage sales of DD (which cold be used both SS and DS)> versus HD (which
were almost always used DS) diskettes for> any given year along with how many units
were sold.> > And then you might also want to look at the actual number> of
floppy drives that were sold which are able to use a> given number of sectors.>
Hi
There is nothing in the drive that is specific to the number
of sectors.
The following were 10 sector disk:
Polymorphic 8813 Used both single and double density disk
H8/89 H17 controller used single density
NorthStar single density ( double?? don't think so )
These are all 5.25inch. As far as I know, 10 sectored was
the most common. I don't know of any that used 16 sectored
and never heard of 9 sectored.
Dwight
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6:27 p.m.
>Would I be more-or-less correct if I assumed that
the bulk of hard-
>sectored diskettes in use fell into two groups: 16-sector 5.25" and
>32-sector 8"? I know that there are other physical formats, but I'm
>wondering if that would have 90% coverage?
On Sat, 15 Dec 2007, Jerome H. Fine wrote:
For 5.25" diskettes, if you mean currently still
in use,
then you are probably correct regarding 90% use of HD 5.25"
diskettes. But initially the use of 180K and 360K 5.25"
diskettes was probably 90% - did they use 9 sectors?
Chuck was asking about HARD-sectored diskettes.
NONE of which are in "current" use.
You are talking about SOFT-sectored diskettes.
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