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From: mike@wisdom.BITNET (Mike Trachtman)
Newsgroups: net.unix-wizards
Subject: C partition
Message-ID: <8609182044.AA08511@jade.Berkeley.Edu>
Date: Fri, 19-Sep-86 00:10:47 EDT
Article-I.D.: jade.8609182044.AA08511
Posted: Fri Sep 19 00:10:47 1986
Date-Received: Sat, 20-Sep-86 00:36:14 EDT
Sender: philip@ucbvax.BERKELEY.EDU
Organization: University of California at Berkeley
Lines: 38

I just thought of a simple extension to the Sun approach
of having the partition information on the disk itself.

In addition, how about an ioctl, that can change the
size of the partition.
(one to read the size into a user program, and one
to reset the size).

The one to set the size would be doable by root only of course.

In any case, in general the C partition,
would not include bad block areas; the area that describes the partitioning
of the disk, or anyother purposefully transparent area.

Special utilities, such as disk copiers, or bad block repairers, or whatever,
would set change the partitions dynamically, so as to do their stuff,
and then when done, restore things to the way they were.

Presumeable, tables of where interesting information is,
i.e. bad block info, and or special headers are, would be kept in a file.

This should give the best of all worlds,

mike

                                Mike Trachtman
My address:

        mike@wisdom                             (BITNET)
        mike%wisdom.bitnet@wiscvm.ARPA          (ARPA/CSNET)
        mike%wisdom.bitnet@berkley              (ARPA/CSNET)
and if all else fails (ONLY for VERY short items)
        ...!decvax!humus!wisdom!mike            (UUCP)

       Physical:  Michael Trachtman
                  Applied Math Department
                  Weizmann Institute of Science
                  Rehovot, Israel.