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Re: Microsoft open sources DOS 1.0

From Frank Slootweg <this@ddress.is.invalid>
Newsgroups aus.computers
Subject Re: Microsoft open sources DOS 1.0
Date 2026-05-05 13:50 +0000
Message-ID <10td3k4.16p0.1@ID-201911.user.individual.net> (permalink)
References <n5sqgvFoc0jU1@mid.individual.net> <b5dmscvsqb8w.rmi8usiekuqr$.dlg@40tude.net> <10td0fd.14qk.1@ID-201911.user.individual.net>

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A liitle earlier, I wrote:
> JJ <jj4public@gmail.com> wrote:
> > On Tue, 5 May 2026 10:04:47 +1000, Axel wrote:
> > > <https://www.zdnet.com/article/microsoft-open-sources-dos-1-0-much-more-than-the-code/>
> > 
> > All Microsoft's released MS-DOS source codes are not true open source. All
> > of them are missing the source code for the boot sector bootstrap code.
> 
>   Well, strictly speaking the boot sector bootstrap code is not part of
> MS-DOS, because it could boot any OS. But the fact that most of the time
> the boot sector bootstrap code will be *generated* by the relevant
> MS-DOS command (AFAIR 'SYS' in the old days) the point is rather
> theoretical/moot.

  Oops, that probably should be FORMAT (or FDISK for a multi-partition
disk), not SYS. SYS puts the (MS-DOS) io.sys and msdos.sys files (and -
version dependent - command.com file) on the already formatted disk/
partition.

  Anyway, as I said, the point is theoretical/moot, because other OSs
can generate a boot sector, MBR, etc..

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Thread

Microsoft open sources DOS 1.0 Axel <none@not.here> - 2026-05-05 10:04 +1000
  Re: Microsoft open sources DOS 1.0 JJ <jj4public@gmail.com> - 2026-05-05 13:37 +0700
    Re: Microsoft open sources DOS 1.0 Frank Slootweg <this@ddress.is.invalid> - 2026-05-05 12:57 +0000
      Re: Microsoft open sources DOS 1.0 Frank Slootweg <this@ddress.is.invalid> - 2026-05-05 13:50 +0000
      Re: Microsoft open sources DOS 1.0 JJ <jj4public@gmail.com> - 2026-05-06 15:02 +0700
        Re: Microsoft open sources DOS 1.0 Frank Slootweg <this@ddress.is.invalid> - 2026-05-06 14:09 +0000
          Re: Microsoft open sources DOS 1.0 JJ <jj4public@gmail.com> - 2026-05-07 03:29 +0700
            Re: Microsoft open sources DOS 1.0 Keithr0 <nothing.to.see@here.com.au> - 2026-05-07 10:49 +1000
            Re: Microsoft open sources DOS 1.0 Frank Slootweg <this@ddress.is.invalid> - 2026-05-07 12:24 +0000
    Re: Microsoft open sources DOS 1.0 malxau <invalid@invalid.net> - 2026-05-23 04:09 +0000

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