At 06:54 PM 9/24/99 +0200, you wrote:
>On Fri, 24 Sep 1999 08:10:25 -0700, Bob George wrote:
>
>> Just a reminder that the inability to boot without DOS does not necessarily
>> mean something's "not an OS". Witness NetWare 3.x and up. Arguably, one of
>> the best uses for DOS is as a program loader for something better.
>
>_BUT_ (and a big "but" it is), do DOS remain in memory after NetWare
>loads up? Or does it get overwritten?
DOS sits in the 640KB of real mode memory. Netware uses the rest. DOS stays there to
access the C: drive and any real mode CDROM drivers loaded. There is a Netware command
called "REMOVE DOS" that will unload DOS and reclaim that memory and/or provide more
security.
>
>If it is over written, then NetWare is an OS. But if DOS remains in
>the background... NetWare is not.
>
>Examples:
>Linux is an OS. Optionaly, it can use DOS to load. But once you start
>loading Linux, DOS gets overwritten in memory and disappears for good.
>Linux, therefor, is a full OS.
>
>Windows 9x loads from DOS. But DOS remains in memory while Windows
>starts, and even while you work. Infact, Windows 9x quit back to DOS
>once finished. (though its hiding it by pasting an image in the video
>buffer and locking the keyboard. There is a way to make windows
>not lock the keys, which leave you free to use "mode co80" to
>refresh the video and see the real picture.. that is, the good ol'
>COMMAND.COM prompt.)
>Therefor, Windows 9x is NOT an OS.
>
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