add directory Minix

Minix/old/1.7.1/xt/README

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+Suggestions on installing Minix on a machine with little memory.
+
+The file TINYROOT is a small replacement for the ROOT image that is
+needed if your machine has only one floppy drive and less than 2
+megabytes of memory.  You can use it to boot your machine, but you
+should use ROOT for the installation if you can.
+
+If your floppy drive is only 360 kb then have to use TINYROOT for ROOT,
+and TINYUSR1 for USR.  The very last step of the installation, filling
+/usr from USR.nn, will fail, because you need some commands that are on
+TINYUSR2.  You have to copy those commands into the /usr tree (mount the
+floppy and cpdir the lot).  TINYUSR2 also contains the kernel image
+used for TINYROOT in the tmp directory that you can use as /minix.
+
+A machine with only 640 kb memory will have trouble to run the
+installation script.  Use
+
+	exec instdist
+
+to overlay the login shell of root with the script.  The USR.nn and
+SRC.nn images can be split in two 360 kb pieces with the commands:
+
+	dd if=image of=first-half bs=1k count=360
+	dd if=image of=second-half bs=1k skip=360
+
+If you want to compile a new kernel as bin use
+
+	chsh /bin/sh
+
+to change the login shell of bin from ash to the much smaller sh.  Log
+out, log back in, and use
+
+	exec make xxx
+
+If it still fails then you have to make things bit by bit by running
+make in subdirectories.
+
+Note that you are on your own in this enterprise, anyone mad enough to
+still use an XT had better be smart enough to find his own way.  Testing
+the TINYXXX stuff has consumed enough of my time.  If you still dare to
+ask me questions then you'd better make it very interesting questions.
+--
+						Kees J. Bot  (kjb@cs.vu.nl)