NOVELL TECHNICAL INFORMATION DOCUMENT

DOCUMENT PROCESSING INFO:  This Document replaces  FYI-M-1616
TITLE:  OS/2 INSTALLATION WITH DR DOS
DOCUMENT ID:  TID800067
DOCUMENT REVISION:  A
DATE:  18AUG94
AUTHOR:  DBADGER;DPARTRID
ALERT STATUS:  Yellow
DISTRIBUTION:  Public
INFORMATION TYPE:  Issue
README FOR:  NA
NOVELL PRODUCT CLASS:

Desktop Products

NOVELL PRODUCT and VERSION:

DR DOS 6.0

CATEGORY:

Installation

ABSTRACT:

NA

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ISSUE

GENERAL NOTES

This document will supplement the information found in the OS/2
Installation Guide. A full understanding of the OS/2 Installation Guide is
necessary to properly install OS/2 with DR DOS 6.0.


PLANNING AHEAD

Determine which operating systems are to be used on the system and plan
accordingly. If only OS/2 & DR DOS 6.0 are being installed, refer to the
DUAL BOOT section below. If an additional single user disk operating
system is going to be used refer to both the DUAL BOOT and MULTIPLE DOS
sections. If you are planning to use OS/2, DR DOS and a third OS version
refer to the MULTI BOOT section.

DUAL BOOT  (OS/2 & DR DOS)

Dual Boot is the most practical method of installation for the customer
with OS/2 and DR DOS. Prior to installation take care to observe the noted
precautions.  Make sure that there is at least 40MB available as the
primary partition. OS/2 can take as much as 34MB of disk space and DR DOS

requires 2.5MB of space. Do not compress the primary drive with SuperSTOR
or other disk compression utilities. As explained in the OS/2 Installation
Guide on page 25:

-DR DOS must be installed on the drive prior to installing OS/2.
-Copy COMMAND.COM to the DR DOS directory and edit the CONFIG.SYS file to
read:

       SHELL=C:\DRDOS\COMMAND.COM C:\DRDOS
       (COMSPEC=C:\OSUTILS\COMMAND.COM for Multiuser DOS)

OS/2 is now ready to install.

MULTIPLE DOS (OS/2, DR DOS & ?DOS)

If more than one DOS is to be used with OS/2, batch files are used to
determine which OS to boot.  A third party boot manager is required to use
DR DOS and MS DOS with OS/2. A sample batch file to alternate between DR
DOS 5.0 and DR DOS 6.0 follows:

DOSBOOT.BAT

ATTRIB IBM*.COM -RSH
If "%ver%"=="6.0" GOTO DRDOS6
:DRDOS5
REN IBM*.COM DR5*.COM
REN DR6*.COM IBM*.COM
GOTO END
:DRDOS6
REN IBM*.COM DR6*.COM
REN DR5*.COM DR6*.COM
:END
ATTRIB IBM*.COM +RSH
ECHO   REBOOT THE SYSTEM NOW . . .

This file will remove the attributes of the IBMBIO.COM and IBMDOS.COM in
order to rename them. Check for current version and prepare to change to
alternate version. Rename the current system files to appropriate version
files. Rename the future version files to the appropriate system files.
Restore the attributes of the new system files.

The system must be rebooted for these changes to take effect.

NOTE:
     If Dual Booting from OS/2 - the system will return to the
     version of DR DOS for the current system files.

MULTI BOOT (OS/2, DR DOS & A THIRD OS)

Using the Multi Boot method described in the OS/2 Installation Guide
follow the steps listed:

-Prepare the drive with OS/2 FDISK (DO NOT FDISK with DR DOS)
-Install OS/2
-Format the DOS partition with the DR DOS FORMAT command
-Install DR DOS
-Copy COMMAND.COM to the DR DOS directory & edit the CONFIG.SYS to read:

       SHELL=C:\DRDOS\COMMAND.COM C:\DRDOS
       (COMSPEC=C:\OSUTILS\COMMAND.COM for Multiuser DOS)


-Install the third operating system.

This method does not work with two versions of DOS.

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