[comp.sys.ibm.pc] 1.44mb floppy data format

dan@modcomp.UUCP (05/31/90)

I'm looking for information on the format of the 1.44 mb 3 1/2" floppy.
This includes:

media descriptor
sectors per cluster
number of FATs
sector per FAT
number of clusters

etc, etc, etc.

Please email or post data or if you know a good reference....

Thanks

uunet!modcomp!dan

barron@eniac.seas.upenn.edu (Daniel P. Barron) (06/02/90)

In article <91800005@modcomp> dan@modcomp.UUCP writes:

>I'm looking for information on the format of the 1.44 mb 3 1/2" floppy.
>This includes:

>media descriptor
>sectors per cluster
>number of FATs
>sector per FAT
>number of clusters

>etc, etc, etc.

I'm not sure if this helps, but I popped a 1.44MB disk in drive A: and
ran Norton's Disk Information program.  It looks like the information
you requested.

C:\UTIL\NORTON>di a:

DI-Disk Information, Advanced Edition, (C) Copr 1987, 1988, Peter Norton

  Information from DOS         Drive A:       Information from the boot record
 ------------------------------------------------------------------------------
                               system id             'IBM  3.3'         
                        media descriptor (hex)               F9         
             0               drive number                               
             0            unit within driver                            
           512             bytes per sector                 512         
             2            sectors per cluster                 2         
             1             reserved sectors                   1         
             2              number of FATs                    2         
           112          root directory entries              112         
             3              sectors per FAT                   3         
           713            number of clusters                            
                           number of sectors              1,440         
             1               offset to FAT                              
             7            offset to directory                           
            14              offset to data                              
                           sectors per track                  9         
                                 sides                        2         
                            hidden sectors                    0         


db
_______________________________Daniel Barron__________________________________
                                     | E-mail: barron@wharton.upenn.edu
"Hunger only for a taste of justice, |         barron@eniac.seas.upenn.edu
 Hunger only for a word of truth."   |         barron@scrolls.wharton.upenn.edu
            --Tracy Chapman          | USMail: Suite 1400, 3620 Locust Walk
_____________________________________|_________Philadelphia, PA  19104________