###############################################################################
#
# File:         README
# RCS:          $Id: README,v 1.1 2009/11/09 02:46:33 npb853 Exp $
# Description:  Readme file for simple virtual disk
# Author:       Fabian E. Bustamante
#               Northwestern Systems Research Group
#               Department of Computer Science
#               Northwestern University
# Created:      Wed Nov 19, 2003 at 16:44:43
# Modified:     Wed Nov 17, 2004 at 14:08:02 fabianb@cs.northwestern.edu
# Language:     N/A
# Package:      N/A
# Status:       Experimental (Do Not Distribute)
#
# (C) Copyright 2003, Northwestern University, all rights reserved.
#
###############################################################################

This is a very simple logical/virtual disk. It allocates SD_NUMSECTORS
sectors of SD_SECTORSIZE each. It allows reads and writes simulating
random I/O errors.

Notice the SD_WITHERROR flag. Unseting this avoids the simulated
random I/O errors.

The interface, defined in sdisk.h includes:

extern int SD_initDisk ();
extern int SD_finalizeDisk();
extern int SD_saveDisk(char* file);
extern int SD_loadDisk(char* file);
extern int SD_read (int sector, char *buf);
extern int SD_write (int sector, char *buf);

testsd.c is a trivial driver for simpledisk.

fabian