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Mail Archives: opendos/2001/05/31/01:03:12

To: fd-dev AT topica DOT com
X-Comment-To: Matthias Paul <Matthias DOT Paul AT post DOT rwth-aachen DOT de>
Cc: opendos AT delorie DOT com
References: <0 DOT 1300007563 DOT 1860321608-951758591-991179339 AT topica DOT com>
Message-Id: <2.07b7.11K9B.GE63DM@belous.munic.msk.su>
From: "Arkady V.Belousov" <ark AT belous DOT munic DOT msk DOT su>
Date: Thu, 31 May 2001 01:22:34 +0400 (MSD)
Organization: Locus
X-Mailer: dMail [Demos Mail for DOS v2.07b7]
Subject: Re: [fd-dev] Proposal for new partition type IDs for use with
future DOSes
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Reply-To: opendos AT delorie DOT com

X-Comment-To: Matthias Paul

Hi!

30-νΑΚ-2001 01:21 Matthias DOT Paul AT post DOT rwth-aachen DOT de (Matthias Paul) wrote to
fd-dev AT topica DOT com:

MP>  F7h  Proposal: Alternative SFN FAT12 (no VFAT LFNs allowed!)
MP>  F8h  Proposal: Alternative SFN FAT16 (<= 32 Mb) (no VFAT LFNs!)
MP>  F9h  Proposal: Alternative SFN FAT16B (BIGDOS > 32 Mb) (no VFAT LFNs!)

     I think, any mentions of "FAT16" without "b" for _new_ partitions types
must be avoided - difference there (as you stated) only in additional fields
in BPB and better not to multiply BPB types (whereas this anyway not add
_any_ compatability).

MP>  FDh  Reserved for future use by FreeDOS
MP>       NOTE: This might serve as an escape into a new partitioning
MP>       scheme, an alternative low-footprint filesystem or be for
MP>       other special purpose use (Details to be discussed with the
MP>       FreeDOS developers).
MP> The background for this is that the current partitioning
MP> scheme with primary partitions and logical drives in extended
MP> partitions is reaching its limits,

     ? May you expand this theme? More precise: what you propose as
alternative?

MP> and at some stage soon it might
MP> be necessary to break out of the current concept, similar to
MP> Microsoft's approach:
MP>  42h  Windows 2000 (Windows NT 5): Dynamic extended partition
MP>       NOTE: The inner workings of this partition type are not
MP>       yet known, however, Windows 2000 will hide and maintain
MP>       a new kind of partitions behind this partition type.
MP>       The configuration data for these partitions is stored at
MP>       the very end of this partition??? or drive???

MP> So much for today...

     Yes. :) And not easy to read all. :(

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