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From
SubjectRe: FAT12 vs FAT16
Date
Followup to:  <Pine.LNX.3.95.970822175945.130A-100000@chaos.analogic.com>
By author: "Richard B. Johnson" <root@analogic.com>
In newsgroup: linux.dev.kernel
>
> Not if it's a disk supported by MS-DOS or created using MS-DOS tools.
> MS-DOS format will not (read cannot) make such a disk. Even with its
> media type/size/heads options, it doesn't have the code necessary to
> produce a disk under any other rules because it calculates the
> clusters not you, and it uses the 4085 cluster rule for writing the FAT.
>
> Just because, in principle I can make a disk with one cluster and a 16-bit
> FAT, does not mean that it is a MS-DOS disk. MS-DOS will not understand
> such a disk so no other OS should bother with such a deviation either.
>

I once came across a DOS floppy formatted with FAT16; I think some (OEM?)
version of DOS 2.x or 3.x always formatted FAT16. Surprised the
living daylight out of me...

-hpa
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