Table of Contents

Upgrading old Windows installations

If you want to upgrade from Windows 3.1 to Windows 95, see ``Upgrading from Windows 3.1 to Windows 95''.

Upgrading from SCO Merge 3.2.1 or earlier

You do this by following the procedure for a first-time installation of Windows 3.1. (see ``Installing Windows 3.1, Windows 3.11, and Windows for Workgroups'' for instructions).

Windows setup program detects that you have previously installed Windows and prompts you to update it. Allow setup to do the update.

Upgrading from SCO Merge 3.2.2

If you upgraded SCO Merge from Version 3.2.2, you do not have to re-install Windows or any of the applications. However, you must update the SCO Merge Windows drivers for each user.

Upgrading network installations of Windows

To do this, start a DOS session and run the winxcopy command with the location where Windows is installed. For example, if the central Windows location is J:\share\windows, enter:

        winxcopy j:\share\windows

You should then update every user's Windows installation as described in the next section.

Upgrading SCO Merge Windows drivers

All users that have Windows installed must update their Merge Windows drivers. To do this:

1. If you are working in a Desktop environment, start the Merge Setup utility.

   Choose the Personal Windows Setup option and then Start DOS to Configure Windows 3.1 from the menu that appears.

   If you are working in a non-Desktop environment, start a DOS session for Windows installation by typing the following at the UNIX prompt:

           winsetup
   

2. At the DOS prompt, change to the directory where Windows is installed (usually C:\windows) and enter:

           mwupdate
   

   If you are not using the SCO Merge Windows/X display driver, you do not need to do anything else.

   To upgrade the Windows/X display driver, continue with the following steps:

3. Run the setup program by typing:

           setup
   

   SETUP displays your current hardware configuration.

4. Use the arrow keys to select the Display option, and press ENTER.

   SETUP displays a list of the display types it knows about. Use the arrow keys to find and select the following line (normally at the end of the list) and press ENTER:

   	Other (Requires disk provided by hardware manufacturer)
   

5. SETUP prompts you to insert the display driver disk in drive A. Do not insert a disk. The files that SETUP needs have been installed in J:\mwindows. Specify that drive and directory and press ENTER.

6. SETUP now displays the eight Windows/X driver choices:

           DOS Merge Windows/X
           DOS Merge Windows/X (Large Fonts)
           DOS Merge Windows/X CGA
           DOS Merge Windows/X CGA (Large Fonts)
           DOS Merge Windows/X Hercules
           DOS Merge Windows/X Hercules (Large Fonts)
           DOS Merge Windows/X Mono-VGA
           DOS Merge Windows/X Mono-VGA (Large Fonts)
   

   Select the driver you want to use and press ENTER.

7. The display changes back to the hardware list with the following selection:

           To accept the list, press ENTER.
   

   or

           Accept the configuration shown above.
   

   Press ENTER to accept the list as displayed and to continue installation.

8. SETUP may prompt for various installation disks. If SETUP prompts for a Windows disk, insert the requested disk and press ENTER.

   If SETUP prompts for the DOS Merge Windows Drivers disk, specify j:\mwindows and press ENTER.

   Once SETUP has finished installing the Windows/X driver, you return to the DOS prompt.

9. Type quit to exit the DOS session.

SCO Merge supports installing Windows 95 from the standard Microsoft Windows 95 or Windows 95 Upgrade CD. Installation from floppies is not supported.

Each user needs to install his or her own copy of Windows. The root user cannot install or run Windows 95.

Warning:

The OSR2 and later versions of Windows 95 include MS-DOS 7.1. Pre-OSR2 versions of Windows 95 include MS-DOS 7.0. OSR2 Windows will not work with DOS 7.0, and pre-OSR2 Windows will not work with DOS 7.1. So on a single system, all users must use the pre-OSR2 versions of Windows, or all must use the OSR2 and later versions of Windows. Note: Windows 3.1, Windows 3.11, and Windows for Workgroups will work with DOS 7.0 but not with DOS 7.1.

To install Windows 95, you should be working in the Desktop environment on the system console. This is required in order to run the SCO Merge graphical installation utility. This utility sets up various configuration parameters and starts the standard Windows 95 Setup procedure from your CD.

(To install Windows 95 from the UNIX command line, use the instwin95cd command as described in ``Installing Windows from the command line'' in Chapter 6.)

Windows 95 is automatically installed in C:\windows unless you are upgrading from a previous version. Drive C is your personal drive and is located by default under your UNIX home directory. See ``Typical drive setup'' in Chapter 3 for more information about drives in your SCO Merge environment.

You can also install Windows 95 from a CD that is mounted in a UNIX directory on your local machine or on a remote server. This can be useful if you have a remote CD server or if SCO Merge cannot find your CD-ROM drive.

Basic installation procedure for Windows 95

Follow these steps to install Windows 95:

1. Start the Merge Setup utility.

2. Select Personal Windows Setup from the list of options and click OK.

3. Click on the Install Windows 95 button.

4. Click on the appropriate radio button to specify where the Windows 95 installation files are located. You have two choices:

   • Install from CD-ROM device

   • Install from a directory

5. If you choose to install from a CD-ROM, insert your Windows 95 CD into the drive and select the appropriate CD-ROM device from the drop-down list.

   If your CD-ROM device is not listed, you can choose Other. A type-in box will then appear, and you and can either type the UNIX device name or use the Browse button to find it.

   If your Windows 95 CD is mounted in a UNIX directory either on a local or a remote machine, you can choose to install from that directory. Type in the full path name for this directory in the From Directory text box or use the Browse button to search for it.

6. Click Install to start the standard Windows 95 installation process.

7. Follow the instructions in the procedure to complete the installation.

   You will need to type in the Windows 95 CD key when prompted. (You will first see a warning that you have entered a wrong key, even though you have not typed in anything yet. Ignore this warning, and just type in the key.) You can obtain the key value from the disk or the disk-packaging materials supplied by the manufacturer.

   After installation completes, Windows 95 starts. Windows 95 uses the entire screen on your console, because it is configured to use the standard VGA driver as its display driver by default.

   If you plan to run Windows 95 from your Desktop environment, you can now install the SCO Merge Windows/X driver in order to display the Windows session as a true X client in its own window. You can also install this driver at a later time.

   If you do not install the Windows/X driver, you will be prompted to zoom your Windows session when you start it from the Desktop. (You can also configure your session to zoom automatically. See ``Zooming options'' in Chapter 4 for more information.)

   ---

   NOTE: Do not install Windows 95 networking. SCO Merge provides its own networking support for applications that use the WinSock 1.1 API. See ``Using networking under Windows'' in Chapter 3 for more information.

   ---

8. To exit the Merge Setup installation utility, shut down Windows 95 by using the Shut Down selection from the Start menu.

The SCO Merge Windows/X driver displays a Windows session as a true X client in its own window on your Desktop. To install this driver, you need to change the adapter and monitor type using the Windows 95 Control Panel.

Start a Windows 95 session from a Desktop, if you are not already running it, and follow these steps:

1. Open the Control Panel window by clicking on the Start button and selecting Settings from the menu.

2. Double-click on the Display icon.

3. In the Display Properties window, click on the Settings tab.

4. Click on the Change Display Type button.

5. You need to change both the adapter and the monitor type settings. First, click on the Change... button next to the adapter type.

6. In the Select Device window, you see two choices: Full Screen VGA (640x480) and Merge Windows/X (win95 version). Select the Merge Windows/X (win95 version) adapter type and click on the OK button.

7. Next, click on the Change button next to the monitor type.

8. Only one selection is available - Generic Merge Compatible Monitor. Click on the OK button to select it.

9. Exit by clicking on the Close button in the Change Display Type window and in the main Display Properties window.

10. You now see a message that your computer needs to be restarted in order for the new settings to take effect. Click on the Yes button.

11. The Windows 95 session shuts down.

If you want to switch back to the VGA display driver at some point, you can go through the display configuration again and choose the Full Screen VGA adapter as your display type.

Upgrading from Windows 3.1 to Windows 95

If you have Windows 3.1, Windows 3.11 or Windows for Workgroups installed on your personal drive C, you can upgrade your installation to Windows 95.

If Windows is installed on a drive other than C, the upgrade procedure will install Windows 95 in C:\windows automatically and ignore the location of your previous Windows version.

If drive C is not your personal drive, you need to change the Windows configuration as described in ``Upgrading Windows configuration personal drive'' before installing Windows 95.

To perform an upgrade, simply follow the instructions in ``Basic installation procedure for Windows 95'' as if you are doing a fresh installation of Windows.

If you are using a Merge Windows/X driver to run your Windows 3.1 session in a window on the Desktop, you have to upgrade this driver to the Windows 95 version. To do this, follow the procedure described in ``Installing Windows/X driver for Windows 95''.

It is not necessary to reinstall your existing Windows applications in order to use them with the upgraded version of Windows.

Upgrading Windows configuration personal drive

If Windows 3.1 is installed on your personal drive and that drive is configured to be something other than drive C, you will not be able to install Windows 95 until you update your configuration as follows:

1. Create a directory called merge under your home directory.

2. Start the Merge Setup utility.

3. Select Personal Merge session configuration: win from the list of options.

   If you ever want to run Windows 3.1 again, save this configuration under a new name by using the Save As button. A new icon which you can use to start Windows 3.1 sessions will be added to your desktop.

   If you do not wish to save the Windows 3.1 configuration, proceed with the next step.

4. Select the Drives and Filesystem view by clicking on the appropriate button at the top of the window.

5. Select drive C: from the list of drives and click on the Properties button.

6. In the Directory box, type in the following:

   HOME/merge/
   

   and mark this drive as your personal drive by selecting the Personal Drive option. Click OK to exit.

7. You can now configure another drive to refer to your old home directory if you need to access any files located there from Windows 95.

8. Save your changes by clicking on the Save button and exit the Merge Setup utility.

SCO Merge imposes a limit of 32 simultaneous sessions for each system (see Limitations on simultaneous sessions in Appendix E for instructions on how to change this limit.) However, running Windows 95 sessions on a UNIX system consumes a lot of systems resources (such as memory and swap space), and you may run out of these resources before you reach the 32-session limit.

If you plan to have multiple users running simultaneous Windows 95 sessions, make sure that your system has as much memory available for each session as specified in your personal Windows session configuration (16 Megabytes by default). You also need to have this amount plus 2 additional Megabytes of swap space available for each Windows session.

Installing Windows 3.1, Windows 3.11, and Windows for Workgroups

Before installing any of these versions of Windows, make sure that DOS is installed on your system by invoking the DOS utility. If DOS is not installed, you need to install it before you install Windows. See ``Installing DOS'' for instructions.

Installing Windows under SCO Merge is very similar to installing it on native DOS. This section describes the steps you need to perform. However, if you have never installed Windows, you should review the installation procedure in your Windows documentation as well.

You can install Windows 3.1, Windows 3.11, or Windows for Workgroups from the Desktop or non-Desktop environment. Each user needs to install his or her own copy of Windows.

Prior to installing, you need to determine the Windows display driver to use. If you are running in a non-Desktop environment, you will have to use the standard VGA display driver. This driver will display your Windows session using the whole display in 16 colors and 640x480 resolution. If you are running in a Desktop environment, you can install the SCO Merge Windows/X driver, which will display your Windows session in its own window on the Desktop, using the same resolution and the same number of colors as your X Desktop.

If your system can zoom SCO Merge sessions on the X Desktop, you can use either driver, and you can set up either one as your initial driver when you install Windows and switch easily between them as you use SCO Merge. If your system does not support zooming, you must use the SCO Merge Windows/X driver, and you must set it up during Windows installation.

1. Start a DOS session by invoking the DOS utility.

2. Display the Window menu from the menu bar to see if the Zoom option is available (that is, it is not grayed out).

There are three parts to installing Windows 3.1, Windows 3.11, or Windows for Workgroups:

1. Install Windows following the instructions in one of the two following sections, depending on the Windows display driver you are installing:

   • ``Basic installation for VGA display''
   • ``Basic installation for Windows/X display'',

2. Install the DOS Merge mouse driver, as described in:

   • ``Installing the DOS Merge mouse driver''.

3. Install the DOS Merge network printing driver, as described in:

   • ``The DOS Merge network printing driver''.

   This step is optional.

To do this in the Desktop environment, start the Merge Setup utility and select the standard personal DOS configuration. Then, use the Drives and Filesystem view to configure a new drive of type CD. Repeat these steps to configure a CD for your standard personal Windows configuration. See ``Configuring drives'' in Chapter 4 for more information.

Where to install Windows

However, when you share your system with other users, you or the system administrator might want to install Windows in a publicly accessible directory and have each user install his or her own personal copy of Windows from that location. This special installation is described in ``Installing Windows 3.1 for multiple users''.

Basic installation for VGA display

1. If you are working in a Desktop environment, start the Merge Setup utility.

2. Select Personal Windows Setup from the list of options and click OK.

3. Click on the Install Windows 3.1 button. This starts a DOS session specially configured to install Windows 3.1, Windows 3.11, or Windows for Workgroups.

   If you are working in a non-Desktop environment, start this special DOS session by typing the following at the UNIX system prompt:
   
   winsetup

4. At the DOS prompt, insert the first disk of the Windows package in drive A, and enter:
   
   a:setup

   Or, if you have previously copied the Windows 3.1, Windows 3.11, or Windows for Workgroups driver disk images to your hard disk, you can run setup from the directory where the disk images are located instead of using your Windows disks.

   You can also install Windows from other drives; just use the appropriate drive letter.

   ---

   NOTE: If setup does not start, you may have too many DOS drivers or Terminate and Stay Resident (TSR) programs running (for example, IPX or MSCDEX). Exit the DOS session and edit your config.sys and autoexec.bat files to comment out unnecessary drivers and TSRs.

   ---

5. setup gives you a choice between Express and Custom installation. Select Express for the default installation into C:\windows. Select Custom to install into a different location.

6. Proceed with the Windows installation, taking the following notes into consideration:

   • If you are working in a Desktop environment, you are prompted to zoom to full screen at some point in the installation. Select the Zoom option from the Window menu to do this.

   • IMPORTANT: If you are installing Windows for Workgroups, do not install a network in the network setup step. (Leave the Network Setting as No Network Installed.) If you want to use your Novell NetWare network from Windows, you may install the Novell NetWare files after you have completed Windows installation. See ``Appendix D, Using Novell NetWare''.

   Refer to your Windows installation documentation if you need additional information.

7. When the installation is complete, setup asks whether you want to reboot or return to DOS. Click on the Return to MS-DOS button. You are returned to DOS in the directory where this version of Windows is installed. Remember this location, because later steps require that your current drive and directory be set to this location.

8. Type:
   
   mrgwcopy

   This preinstalls SCO Merge driver files for later use.

9. Install the DOS Merge mouse driver following the steps in ``Installing the DOS Merge mouse driver''.

Basic installation for Windows/X display

1. If you are working in a Desktop environment, start the Merge Setup utility.

2. Select Personal Windows Setup from the list of options and click OK.

3. Click on the Install Windows 3.1 button. This starts a DOS session specially configured to install Windows 3.1, Windows 3.11, or Windows for Workgroups.

   If you are working in a non-Desktop environment, start this special DOS session by typing the following at the UNIX system prompt:
   
   winsetup

4. At the DOS prompt, insert the first disk of the Windows package in drive A, and enter:
   
   a:setup

   Or, if you have previously copied the Windows 3.1, Windows 3.11, or Windows for Workgroups driver disk images to your hard disk, you can specify the directory where the disk images are located instead of using your Windows disks.

   You can also install this version of Windows from other drives; just use the appropriate drive letter.

   ---

   NOTE: If setup does not start, you may have too many DOS drivers or TSRs running (for example, IPX or MSCDEX). Exit the DOS session and edit your config.sys and autoexec.bat files to comment out unnecessary drivers and TSRs.

   ---

5. When setup gives you a choice between Express and Custom installation, choose Custom.

6. setup asks for the directory in which to install Windows. The default is c:\windows, which is normally the best location. You can change the drive and directory, if desired, or leave it as the default.

7. setup displays your current hardware configuration. Select the Display option.

8. setup displays a list of the display types it knows about. Select the following line (normally at the end of the list):

      Other (Requires disk provided by hardware manufacturer)
   

9. setup prompts you to insert the display driver disk in drive A. Do not insert a disk. The files that setup needs have been installed for you in j:\mwindows. Enter j:\mwindows in the type-in box and click OK.

10. setup displays the eight Windows/X driver choices:

       DOS Merge Windows/X
       DOS Merge Windows/X (Large Fonts)
       DOS Merge Windows/X CGA
       DOS Merge Windows/X CGA (Large Fonts)
       DOS Merge Windows/X Hercules
       DOS Merge Windows/X Hercules (Large Fonts)
       DOS Merge Windows/X Mono-VGA
       DOS Merge Windows/X Mono-VGA (Large Fonts)
    

    The eight choices represent four display types, each with two font sizes. Use the Large Fonts version of the appropriate display type if you have a very high resolution display (for example, 1024x768). Selecting one of the Large Fonts entries does not affect the size of the Windows window, only the fonts within the window.

    Choose the display type for the type of display you want your DOS boxes to use. A DOS box is the DOS window you get when you click the Windows MS-DOS Prompt icon. The first display type, DOS Merge Windows/X, is for standard VGA. This one is recommended for systems where zooming is available. If you have a monochrome VGA display adapter, use DOS Merge Windows/X Mono-VGA instead. Use one of the other two display types, CGA or Hercules, when zooming is not available, such as when you are using an X-terminal.

    ---

    NOTE: If you choose CGA or Hercules here, you also need to change your SCO Merge configuration to have the same type of display. See ``Setting DOS display types'' in Chapter 6.

    ---

    Select one of the Windows/X driver choices. If you change your mind later or if you select the wrong driver, you can run setup again and select a different driver.

11. The display changes back to the hardware list with the selection:

       To accept this list, press Enter.
    

    or

       Accept the configuration shown above.
    

    Press <Enter> to accept the list as displayed and to continue installation.

12. When setup asks for the DOS Merge Windows Drivers disk, instead of inserting a disk, type:
    
    j:\mwindows

    and press <Enter>. setup installs the SCO Merge Windows/X driver and continues.

13. Proceed with the Windows 3.1, Windows 3.11, or Windows for Workgroups installation. (Refer to your Windows installation documentation if you need more information.)

    ---

    IMPORTANT: If you are installing Windows for Workgroups, do not install a network in the network setup step. (Leave the Network Setting as No Network Installed.) If you want to use your Novell NetWare network from Windows 3.1, Windows 3.11, or Windows for Workgroups, you can install the Novell NetWare files after you have completed the Windows installation. See ``Appendix D, Using Novell NetWare''.

    ---

14. When installation is complete, setup asks whether you want to reboot or return to DOS. Click on the Return to MS-DOS button. You are returned to DOS in the directory where Windows 3.1, Windows 3.11, or Windows for Workgroups is installed. Remember this location, because later steps require that your current drive and directory be set to this location.

15. Type:
    
    mrgwcopy

    This preinstalls SCO Merge driver files for later use.

16. Install the DOS Merge mouse driver, following the steps in ``Installing the DOS Merge mouse driver''.

Installing the DOS Merge mouse driver

To install the DOS Merge mouse driver for Windows, be sure that you are in your Windows directory at the DOS prompt. (If you are not, restart the special DOS session from the Desktop environment by using the Merge Setup utility and choosing Run DOS to Configure Windows 3.1 option or typing winsetup from the UNIX command line.)

Then follow these steps:

1. At the DOS prompt type:
   
   setup

   setup displays the current hardware configuration

2. Use the arrow keys to select the Mouse option, and press <Enter> to see the list.

3. Find and select the following line:

      DOS Merge Mouse
   

   If this line does not appear, exit setup, run the mrgwcopy command, and start the DOS Merge mouse driver installation procedure at step 1.

4. Press <Enter>. The display changes back to the hardware list with the selection:

      To accept the list, press Enter.
   

   or

      Accept the configuration shown above.
   

5. Press <Enter>. setup tells you that the driver is already installed and to press <Enter> to keep the current driver.

6. Press <Enter>. setup installs the DOS Merge mouse driver and exits, leaving you at the DOS prompt.

• Install the DOS Merge network printing driver if you plan to print from Windows applications. See ``The DOS Merge network printing driver'' for more information.

• Type quit to end your DOS session.

The DOS Merge network printing driver

Because the UNIX system is a multi-user operating system, the UNIX system print spooler emulates a Windows network printer to operate with Windows. Note, however, that it only appears as a network printer to the Windows session, not to the UNIX environment.

For best results when printing from Windows 3.1, Windows 3.11, or Windows for Workgroups, you must install the DOS Merge network printing driver. The driver has no effect on printing from DOS.

Or, change your Windows network setting to SCO Merge network printing by installing the DOS Merge network printing driver.

Installing network printing driver with Windows 3.1 or Windows 3.11

Then follow these steps:

1. At the DOS prompt type:
   
   setup

   setup displays your current hardware configuration.

2. Use the arrow keys to select the Network option and press <Enter> to see the list of network drivers.

3. Find and select the following line:

      DOS Merge Network Printing
   

4. Press <Enter>. The display changes back to the hardware list with the selection:

      Accept the configuration shown above.
   

5. Press <Enter>. setup tells you that the driver is already installed and to press <Enter> to keep the current driver.

6. Press <Enter>. setup installs the DOS Merge network printing driver and exits, leaving you at the DOS prompt.

7. Type quit to exit your DOS session.

Installing network printing driver with Windows for Workgroups

1. If you are working in a Desktop environment, start a Windows for Workgroups session by invoking the Win utility.

   If you are working in a non-Desktop environment, start a Windows for Workgroups session by typing the following at the UNIX system prompt:
   
   win

2. Open the Network window by double-clicking on the Network icon.

3. Run the Network Setup application by double-clicking on the Network Setup icon.

4. Click on the Networks button. A dialog box with three radio buttons appears.

5. Click the bottom button (Install Windows support for the following network only). A scrollable list of the networks that Windows for Workgroups knows about appears.

6. Scroll down and select the following entry:

      DOS Merge Network Printing
   

7. Click on the OK button. This brings you back to the original Network Setup dialog box.

8. Click on the OK button.

9. Click on Restart Windows if you want to continue the Windows for Workgroups session.

Switching from VGA to Windows/X driver in Windows 3.1

SCO Merge provides a special Windows display driver that allows you to run Windows on the Desktop. With this driver installed, you can run Windows like any other Desktop application.

Follow these steps to switch to the Windows/X driver:

1. If you are already at the DOS prompt in a special DOS session started from the Merge Setup utility, continue with the next step. Otherwise, restart it from the Desktop environment by running Merge Setup, selecting Personal Windows Setup and choosing Run DOS to Configure Windows 3.1 option.

2. Change your current directory to the directory where Windows is installed and enter:
   
   setup

   setup displays your current hardware configuration.

3. Use the arrow keys to select the Display option and press <Enter> to see the list of the following eight display driver choices:.

      DOS Merge Windows/X
      DOS Merge Windows/X (Large Fonts)
      DOS Merge Windows/X CGA
      DOS Merge Windows/X CGA (Large Fonts)
      DOS Merge Windows/X Hercules
      DOS Merge Windows/X Hercules (Large Fonts)
      DOS Merge Windows/X Mono-VGA
      DOS Merge Windows/X Mono-VGA (Large Fonts)
   

4. The eight choices represent four display types, each with two font sizes. Use the Large Fonts version of the appropriate display type if you have a very high resolution display (for example, 1024x768). Selecting one of the Large Fonts entries does not affect the size of the Windows window, only the fonts within the window.

   Choose the display type for the type of display you want your DOS boxes to use. A DOS box is the DOS window you get when you click the Windows MS-DOS Prompt icon. The first display type, DOS Merge Windows/X, is for standard VGA. This one is recommended for systems where zooming is available. If you have a monochrome VGA display adapter, use DOS Merge Windows/X Mono-VGA instead. Use one of the other two display types, CGA or Hercules, when zooming is not available, such as when you are using an X-terminal.

   ---

   NOTE: If you choose CGA or Hercules here, you also need to change your SCO Merge configuration to have the same type of display. See ``Setting DOS display types'' in Chapter 6.

   ---

5. Use the arrow keys to select one of the Windows/X driver choices and press <Enter>. If you change your mind later or if you select the wrong driver, you can run setup again and select a different driver.

6. The display changes back to the hardware list with the selection:

      To accept the list, press Enter.
   

   or

      Accept the configuration shown above.
   

   Press <Enter> to accept the list as displayed and to continue installation.

7. setup may ask for various installation disks.

   • If setup asks for a Windows disk, insert the requested disk and press <Enter>.

   • If setup asks for the SCO Merge Windows Drivers disk, change the directory to j:\mwindows and press <Enter>.

   If you previously copied the Windows driver disk images to your hard disk, you can specify the directory where the disk images are located instead of using your Windows disks.

   Once setup has finished installing the Windows/X driver, it returns you to the DOS prompt.

8. Type quit to exit your DOS session.

If you want to switch back to the VGA display driver at a later time, you can re-run this procedure and select VGA from the list of display types.

Switching between Windows/X and VGA display

1. If you are using Windows 3.1, Windows 3.11, or Windows for Workgroups, double-click on the Windows Setup icon in the Windows Main program group and choose Change System Settings from the Options menu.

2. Select either VGA or one of the SCO Merge Windows/X selections from the list of display types and click on the OK button.

3. You may be prompted for Windows disks or for the SCO Merge Windows Drivers disk:

   • If you are asked for a Windows disk, insert the requested disk and press <Enter>.

   • If you are asked for the SCO Merge Windows Drivers disk, change the directory to j:\mwindows and press <Enter>.

   If you previously copied the Windows driver disk images to your hard disk, you can specify the directory where the disk images are located instead of using your Windows disks.

4. If setup asks whether to use the currently installed driver or a new driver, select the currently installed driver. (If you select a new driver, you must reinstall the driver again.)

Installing Windows 3.1 for multiple users

This method installs most of the Windows files in a central location, which must be readable by anyone who needs access to Windows. However, each user has a private area (usually in C:\windows) for the few files that cannot be shared. This method can save a lot of disk space when multiple users need to have Windows installed.

The first step -- the network installation -- is only done once. Then, each user installs his or her local Windows directory.

Windows network installation

1. If you are working in a Desktop environment, start the Merge Setup utility.

2. Select Personal Windows Setup from the list of options and click OK.

3. Click on the Install Windows 3.1 button. This starts a DOS session specially configured to install Windows 3.1, Windows 3.11, or Windows for Workgroups.

   If you are working in a non-Desktop environment, start this special DOS session by typing the following at the UNIX system prompt:
   
   winsetup

4. At the DOS prompt, insert the first disk of the Windows package in drive A, and type:
   
   a:setup /a

   (You can also install Windows from other drives; just use the appropriate drive letter.)

   ---

   NOTE: If setup does not start, you may have too many DOS drivers or TSRs running (for example, IPX or MSCDEX). Exit the DOS session and edit your config.sys and autoexec.bat files to comment out unnecessary drivers and TSRs.

   ---

5. Proceed with the standard Windows network installation. When setup prompts you for the target directory, specify a shared directory on drive J. For example:
   
   j:\share\windows

6. When setup returns you to the DOS prompt, execute the winxcopy command to copy special SCO Merge files into the directory where Windows was just installed. For example:
   
   winxcopy j:\share\windows

   At this point, you are finished installing Windows in the central location. Now each user can do a personal installation of Windows from this location.

7. Type quit to exit your DOS session.

Installing personal Windows copies from the central location

1. Instead of inserting a Windows disk and typing setup, type:
   
   j:\share\windows\setup /n

   (If the network installation was in a different location, use that location instead.)

2. After you finish your basic Windows installation, but before you install the DOS Merge mouse driver, type quit to exit the DOS session.

3. Then, start a new DOS session using the Merge Setup Desktop utility (or by typing winsetup at the UNIX command line) to install the DOS Merge mouse driver.

Installing DOS

If you are planning to use Windows 95, you do not need to install DOS separately. It is automatically installed on your system during Windows 95 installation.

If you are planning to use Windows 3.1, Windows 3.11, Windows for Workgroups, or just DOS by itself, you need to install DOS from the standard DOS installation media.

SCO Merge supports installing DOS from floppies as well as from the Windows 95 CD.

Warning:

The OSR2 and later versions of Windows 95 include MS-DOS 7.1.   Pre-OSR2 versions of Windows 95 include MS-DOS 7.0.   Windows 3.1, Windows 3.11, and Windows for Workgroups will work with DOS 7.0 but not with DOS 7.1.   OSR2 Windows will not work with DOS 7.0, and pre-OSR2 Windows will not work with DOS 7.1.   So on a single system, all users must use the pre-OSR2 versions of Windows (including Windows 3.x), or all must use the OSR2 and later versions of Windows 95.

Normally you have to be logged as root to install or re-install DOS. The one exception is when DOS has not been installed before and you are installing DOS from a Windows 95 CD. Note, instead of logging in as root, you can use the command "su -".

Warning:

If you do not use the "-" parameter of the su command it can result in Merge related files being created in your own home directory that are owned by root. In this case, when you try to start DOS or Windows it can result in warning messages or failure to start. When using the su command before using SCO Merge you MUST use the "-" option.

Follow these steps to install DOS:

1. Start the Merge Setup utility.

2. Select System-Wide Merge Administration and click OK.

3. Click on the Install DOS button.

4. A DOS Installation window appears. Click on one of the radio buttons to select the media from which you would like to install DOS:

   • If you select Floppies, choose the version of DOS to install, the floppy drive to install from, and the number of floppies in your set from the menu below.

   • If you select Windows 95 CD, choose whether you want to install DOS from the physical CD-ROM drive or from a UNIX directory where a CD is mounted.

5. Click on the Install button to begin the installation procedure. (If the Install button is inactive, that means you do not have permission to install DOS.)

When you install DOS from the Windows 95 CD, SCO Merge copies all the DOS files from the CD to your hard disk, so you can later reinstall this version of DOS from the Built-in files if necessary.

To reinstall DOS, you need to be a UNIX superuser when you invoke Merge Setup.