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. Aitor On Mon, 20 Feb 2023 at 18:27, Ralf Quint <freedos...@gmail.com> wrote: > On 2/19/2023 5:38 PM, Aitor Santamaría wrote: > > Hello, > > > > Does anyone know if the IFS (Installable File System) API is > > documented anywhere? > > > Just checked in my archive of docs, and there is a MSCDEX.TXT, which > describes the interface for the CD-ROM "network redirector". > > It can apparently be found online at > https://cybermax.tripod.com/mscdex.txt > > > Ralf > > > > > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel >
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