Thanks Ralf for the file, it is very interesting. I am not fully convinced that NOTHING from the IFS was ever developed in MS-DOS 4.X and later taken back in 5.0+.
The network redirector appeared earlier, and I suppose that with IFS, MS tried to resolve some absent functionality in the network redirector. Aitor On Tue, 21 Feb 2023 at 01:18, Ralf Quint <freedos...@gmail.com> wrote: > On 2/20/2023 11:58 AM, Aitor Santamaría wrote: > > Thanks, Ralf!! > > So I thought, but I have read a couple of references (such as the > following in Wikipedia, but not the only one) by which the IFS was present > in MS-DOS 4.X, of course as well as in OS/2 and Windows: > > Installable File System - Wikipedia > <https://en.wikipedia.org/wiki/Installable_File_System> > > Apparently, there was some support for it that was probably removed for > MS-DOS 5.0 and later. Part of the mystery (to me) of MS-DOS 4.X! :) > > In RBIL, the only reference I've found is to IFSHLP.SYS, which was a > Windows mean to guess what has been installed before getting into protected > mode, so I am not sure is if this has to be with the IFS that was planned > and implemented in MS-DOS 4.0. > > Windows and OS/2 are totally different ball games. In DOS, as long as I > can remember, only the network redirector existed. That MSCDEX.TXT that I > mentioned I think tries to explain that as well... > > Don't recall when MSCDEX first showed up, but I think it was after the > networking redirector stuff (for both Novell and LanManager) in MS-DOS 3.0. > > > Ralf > > > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel >
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