Ref: 09330007
Title: Booting Servers - Software Notes
Date: 7-15-88

Copyright 3Com Corporation, 1991.  All rights reserved.

The two DOS system files BIO.COM and DOS.COM have to reside in the
first two entries of a boot disk's directory.  In addition, the BIO.COM
file has to be a contiguous
file (not scattered) and start at the beginning of the diskette's
file space (it must occupy the first clusters in the FAT).  For
Server boot diskettes, these files are called 3BIO.COM and
3DOS.COM, respectively.

This means that you should not delete and then reload the
BIO.COM (or 3BIO.COM) or DOS.COM (or 3DOS.COM) files from
diskettes.  Also, don't do a directory sort using the
NORTON UTILITIES (unless you are very careful).

There's another file on Server boot diskettes
called 3COMBIO.COM.  This is not used for EtherBooting servers.
It is the BIOS for the 3+ OS that gets put on the server's hard
disk (at the front of the directory for drive C:) by the
INSTALL.BAT file.  So it's OK that 3COMBIO.COM is not the first
file on a diskette.

3COMBIO.COM does not contain network
drivers.  It is for 3+, which uses configurable drivers (the
___.SYS files known as the MINDs drivers).  3COMBIO.COM is about
13K long.  3BIO.COM, on the other hand, contains the EtherSeries
2.4 drivers for console, keyboard, and floppy.  It is about 28K
long.  3Console uses EtherSeries protocols even though the PC
workstation has MINDs drivers and is running DOS 3.1 and the
server is running 3DOS 3.3.
