Recently posted in this list:

>(Alain Mouette)
>No it has never been illegal, and it always worked 
>just fine. I use these since forever... what happened 
>is that most tools did not have a way of making them, 
>but if you know how to make them it allways worked 
>since MSDOS-3.

>(Liam Proven)
> You have been lucky. I have seen many incorrectly-
>partitioned systems with multiple primaries where 
>some drives were not visible, on various versions 
>of MS-DOS and up to Windows 95.

>(Alain Mouette)
>Not Lucky, just hard work. Partitions were invented 
>without extended partitions, so it worked from the 
>first...
>FYI: I started using PC-DOS 1.1... so I have a long 
>history of dos and don'ts...

 I do not have as long experience as either of you, but 
at least MSDOS 5.0 and PCDOS 6.3 (copies which I keep 
now, in original floppies) look for just one DOS primary 
and one DOS extended partition in each partition table. 
If there are more than one, the others are ignored. 
DRDOS and FreeDOS search all the partition table.
 AFAIK, DOS partitions were invented in MSDOS 3.3, to 
work around the 32 MB disk size limit, and from the 
beginning they had the primary/extended options. The 
reason was that the number of sectors before a partition 
was still limited to 64 Ki so the extended partition was 
needed, in order to provide a new origin in the disk. 
 Anyway, this discussion is going astray from the 
original problem of Marcos Favero, for FDISK should have 
created the FAT 16 partitions he requested, whether or 
not some DOS versions could find all of them.

Regards
 JAS  


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