154 lines
2.8 KiB
HTML
154 lines
2.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<TITLE>UMSDOS HOW-TO: Umsdos as your root partition</TITLE>
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<LINK HREF="UMSDOS-HOWTO-4.html" REL=next>
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<LINK HREF="UMSDOS-HOWTO-2.html" REL=previous>
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<LINK HREF="UMSDOS-HOWTO.html#toc3" REL=contents>
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<A HREF="UMSDOS-HOWTO-4.html">Next</A>
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<A HREF="UMSDOS-HOWTO.html#toc3">Contents</A>
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<HR>
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<H2><A NAME="s3">3. Umsdos as your root partition</A></H2>
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<P>
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<P>
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<H2><A NAME="ss3.1">3.1 The pseudo-root concept.</A>
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</H2>
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<P>With <EM>Umsdos</EM>, <EM>Linux</EM> can be installed in a standard
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DOS partition. <EM>Linux</EM> is then installed as a second (or
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third) OS in the partition. To avoid name collision (there
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is maybe a bin or tmp directory in the drive C: already),
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<EM>Umsdos</EM> use
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a smart trick: The pseudo-root.
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<P>All <EM>Linux</EM> files are installed in a DOS subdirectory
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called <CODE>linux</CODE>, generally <CODE>C: LINUX</CODE>. The normal
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<EM>Linux/Unix</EM> directory structure goes there. So you
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get
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<P>
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<UL>
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<LI>
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<PRE>
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C:\LINUX\BIN
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\ETC
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\LIB
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\ROOT
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\SBIN
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\TMP
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\USR
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</PRE>
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</LI>
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<LI>
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<PRE>
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C:\LINUX\VAR
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</PRE>
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</LI>
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</UL>
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<P>When the <EM>Umsdos</EM> boot, it probes for the directory <CODE>linux</CODE>
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and then <CODE>/linux/etc</CODE>. If it exist, it activates
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the pseudo-root mode.
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<P>Mostly, the pseudo-root mode switch the root of the partition
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to <CODE>C:\\LINUX</CODE> giving the conventional <EM>Unix</EM> directory
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layout
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<P>
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<UL>
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<LI>
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<PRE>
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/bin
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</PRE>
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</LI>
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<LI>
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<PRE>
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/etc
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</PRE>
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</LI>
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<LI>
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<PRE>
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/lib
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</PRE>
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</LI>
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<LI>
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<PRE>
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/root
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</PRE>
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</LI>
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<LI>
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<PRE>
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/sbin
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</PRE>
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</LI>
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<LI>
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<PRE>
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/tmp
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</PRE>
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</LI>
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<LI>
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<PRE>
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/usr
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</PRE>
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</LI>
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<LI>
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<PRE>
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/var
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</PRE>
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</LI>
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</UL>
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<P>To this list, it adds a new one called <CODE>DOS</CODE>. This one is
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a virtual directory.
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<P>
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<H2><A NAME="ss3.2">3.2 Things to know about the pseudo-root</A>
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</H2>
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<P>
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<UL>
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<LI> This mode can only be triggered
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at boot time. There is no way to activate this by
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a mount command.</LI>
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<LI> This mechanism is purely a different view of a normal
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<EM>Umsdos</EM> file-system. This means that a partition normally
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used as a root partition can be normally mounted. There won't
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be any pseudo-root effect.
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For example, if you boot linux with a maintenance floppy and
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mount your normal root partition in <CODE>/mnt</CODE>, you will
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find all your linux directory in
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<CODE>/mnt/linux/bin, /mnt/linux/etc</CODE> and so on.</LI>
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</UL>
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<P>
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<P>
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<P>
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<HR>
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<A HREF="UMSDOS-HOWTO-4.html">Next</A>
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<A HREF="UMSDOS-HOWTO-2.html">Previous</A>
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<A HREF="UMSDOS-HOWTO.html#toc3">Contents</A>
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