REMOVING OS/2 FROM YOUR SYSTEM
 
 
Disclaimer:  This procedure is provided "as-is", without any warranty and is
                subject to change.  It may contain technical and typographical
                errors.  Please contact the appropriate software support center
                before using this procedure.
 
 
OS/2 V2.X
Should it become necessary to completely remove OS/2 from your system, 
either to reinstall OS/2 or to install DOS/Windows, the recommended 
method is format the OS/2 partition and then install the desired 
Operating System.  However, there may be some circumstances where 
reformatting the harddrive is impractical.  If this is the case, you 
can use the following procedure to "surgically remove" OS/2 from your 
system.  This procedure assumes that you are familiar with using DOS 
commands, and that OS/2 is installed on Drive C:.
 
    1.  If your system does not have Dual Boot installed, create or 
        obtain a bootable DOS 6.x diskette with the DELTREE.EXE and 
        ATTRIB.EXE files present on the diskette.
 
    2.	Boot the system with this diskette or Dual Boot to DOS(if 
        present).
 
    3.	DELTREE the following directories:
	    C:\OS2        C:\PSFONTS        C:\SPOOL    C:\MMOS2
        ** The C:\MMOS2 Directory will only be present if Multimedia 
            Presentation Manager for OS/2 has been installed.  
	
    4.  Type the following commands and answer Yes to the prompts 
        generated:
            DELTREE C:\DESKTOP* <enter>
            DELTREE C:\NOWHERE* <enter>
 
    5.  Use the ATTRIB command to remove the system, hidden, and 
        read-only attributes from all files in the root directory.
 
    6.  Erase the following files from the root directory:
            OS2KRNL    OS2LDR    OS2LDR.MSG
            OS2BOOT    OS2VER    OS2DUMP
 
        When deleting the following files, the '?' is displayed as a 
        blank character.  The '?' serves as a single character 
        wildcard allowing you to delete these files.  To delete these 
        files, type the following commands:
            ATTRIB -S -H -R *.?SF <enter>
            ERASE *.?SF <enter>
 
        Erase the following files of Multimedia Presentation Manager 
        for OS/2 was installed:
            MMUNIMRI.DLL    MMUNINST.EXE	
 
        Delete the following files if Dual Boot is not present:
            CONFIG.SYS      AUTOEXEC.BAT
 
    7.  Reboot with the OS/2 Installation Diskette.  Insert 
        Diskette #1 when prompted.  At the gray "welcome ..." screen, 
        hit ESC to get to a command prompt.  Remove Diskette #1 and 
        insert Diskette #2.  Type CHKDSK C: /F and press ENTER.  
        This should clean up any leftover extended attribute pointers.
 
 
 
 
OS/2 WARP (Select-A-System preload)
Use the following procedure to remove OS/2 WARP from any IBM system 
that came with DOS/Windows and OS/2 WARP preloaded on it.
    1.  If not already booted to DOS/Windows, then have the customer 
        dual boot back to DOS/Windows.
 
    2.  Allow the system to boot all the way to the Windows Program 
        Manager.
 
    3.  Find the "OS/2 WARP" Group within Windows.
 
    4.  Double Click on the "Delete OS/2 WARP" icon.  Answer OK to 
        the following prompts.
 
    5.  Exit from Windows.
 
    6.  Type the following commands:
            ATTRIB -S -H -R *.?SF<enter>
            DEL *.?SF<enter>
 
    7.  OS/2 WARP has now been removed.
 
 
 
OS/2 WARP (not preloaded or not Select-A-System)
If it should become necessary for some reason to remove OS/2 WARP 
entirely from the Hard Drive, you can use the OSDELETE program 
provided on Utility Diskette #3.  This procedure will remove all 
traces of OS/2 Drive.  To remove OS/2 completely from the Hard Drive 
perform the following steps:
    1.  Create the utility diskettes by using the provided utility 
        in the System Setup folder.
 
    2.  If Dual Boot is installed, Dual Boot to DOS.
 
    3.  Reboot the system from the Utility Diskettes.
 
    4.  Follow the prompts until you get to an A: Prompt.
 
    5.  After you get to an A: prompt, remove Diskette #2 and insert 
        Diskette #3.
 
    6.  Type OSDELETE C: and press ENTER.
 
    7.  Manually remove anything that OSDELETE missed, such as extra 
        NOWHERE, DESKTOP, or MMOS2 directories by typing the 
        following commands and answering Yes to the prompts generated:
            DELTREE C:\DESKTOP* <enter>
            DELTREE C:\NOWHERE* <enter>
            DELTREE C:\MMOS2* <enter>
 
    8.  Type the following commands:
            ATTRIB -S -H -R *.?SF<enter>
            DEL *.?SF<enter>
 
    9.  Remove any of the BonusPak directories that are present (see 
        next section).
 
    10. Run CHKDSK C: /F to remove any pointers to Extended Attributes.
 
        ** NOTE:  If you perform the following procedures and still 
        have difficulties with OS/2, IBM Technical Support may require 
        you to reformat and reinstall before proceeding further.  The 
        above procedures are not guaranteed to work, and may not solve 
        all file corruption problems, especially those due to bad 
        sectors on the Hard Drive.
 
 
 
MANUALLY REMOVING THE BONUS-PAK.
 
If you are manually removing OS/2 WARP then there are several 
directories that may or may not be present.  Whether these 
directories are present depends upon whether the specified component 
of the OS/2 WARP BonusPak has been installed.  Following is a list of 
the directories that are used by default when the BonusPak is 
installed.  Use the DELTREE command to delete the following 
directories:
 
    C:\CSERVOS2
 
    C:\FAXWOS2 (Select-A-System only)
	
    C:\FAXWORKS  (Normal Default)
 
    C:\HALITE
 
    C:\IBMWORKS
 
    C:\OS2TOOLS
 
    C:\P2P
 
    C:\TCPIP
 
    C:\VIEWER
 
 
These directories will need to be deleted in order to completely 
remove OS/2 WARP from a system that had the BonusPak installed on it.
All IBM Select-A-System preloads have the complete BonusPak 
installed on them.