Table of Floppy Disk Formats

Posted on 5/11/99 to -> comp.sys.Apple2 by: david@uow.edu.au wrote:
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>Here is a table of floppy disk formats I have built up over the years
>(I must add 21MB and 120MB floptical drives and Sony's HiFD drive soon):
>
>
>disk	speed		data rate	trk	sector	trk/hd
>size	rpm	s/rev	kb/s	scheme	kb	cnt*sz	count	KB
>--------------------------------------------------------------------------------
>8"	    360	0.167	500	FM	41.67	26*128	77/1	260	SSSD (8)
>8"	    360	0.167	500	FM	41.67	26*128	77/2	520	DSSD (8)
>
>8"	    360	0.167	500	MFM	83.33	26*256	77/1	520	SSDD (9)
>8"	    360	0.167	500	MFM	83.33	26*256	77/2	104 DSDD (9)
>
>5.25"	300	0.200	250	FM	25.00	8*256	40/1	 80	SSSD
>5.25"	300	0.200	250	FM	25.00	8*256	40/2	160	DSSD
>
>5.25"	300	0.200	245	GCR	49.00	16*256	35/1	140	SSDD (1)
>5.25"	300	0.200	250	MFM	50.00	8*512	40/1	160	SSDD (3)
>5.25"	300	0.200	250	MFM	50.00	9*512	40/1	180	SSDD (3)
>5.25"	300	0.200	250	MFM	50.00	8*512	40/2	320	DSDD (3)
>5.25"	300	0.200	250	MFM	50.00	9*512	40/2	360	DSDD (3)
>5.25"	300	0.200	250	MFM	50.00	9*512	80/2	720	DSDD
>
>5.25"	360	0.200	300	MFM	50.00	9*512	40/2	360	DSDD (4)
>5.25"	360	0.200	300	MFM	50.00	9*512	80/2	720	DSDD
>
>5.25"	360	0.167	500	MFM	83.33	15*512	80/2   1200 DSHD (4)
>
>3.5"	300	0.167	250	MFM	50.00	9*512	80/2	720	DSDD (5)
>3.5"	300	0.167	250	MFM	50.00	5*1024	80/2	800	DSDD (2)
>3.5"	var	var var	GCR	var	var       *512	80/2	800 DSDD (7)
>
>3.5"	300	0.167	500	MFM	100.00	18*512	80/2   1440 DSHD (6)
>3.5"	var	var	var	GCR	var	 var      *512	80/2   1600 DSHD (A)
>
>3.5"	300	0.167  1000 MFM	200.00	36*512	80/2   2880 DSED
>
>(1)	Apple ][
>(2)	Applix
>(3)	IBM PC
>(4)	IBM PC/AT
>(5)	IBM PS/2 25,30
>(6)	IBM PS/2 > 30
>(7)	Macintosh & Apple //
>(8)	IBM 3740
>(9)	IBM System 34
>(A)	AE 1.6MB drive on Apple //

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