             Adaptec 7700 Family Manager for Windows NT 3.5
             ==============================================


This diskette contains Adaptec's Windows NT 3.5 solution for the AIC-7770
Family of Host Adapters.  This includes:

      AHA-274xA          EISA-to-Fast SCSI
      AHA-274xAT         EISA-to-Fast SCSI   (TwinChannel)
      AHA-274xW          EISA-to-Fast SCSI   (Wide SCSI)
      AHA-284xA          VL-Bus-to-Fast SCSI
 

The files on this diskette which are required for the installation of  
the Windows NT driver are as follows:  
  
    \DISK1               - Disk tag file  
    \TXTSETUP.OEM        - Install script used during NT installation  
    \WINNT\ARROW.SYS     - Adaptec 7700 series driver for Windows NT  
    \WINNT\README.TXT    - This file  
    \WINNT\OEMSETUP.INF  - Install script used by Windows NT Setup 
 
 
Installation instructions for the 7700 family Windows NT driver:  
----------------------------------------------------------------  
  
Read this to find out about
===========================  

    Adding, swapping, and removing Adaptec 7700 Family host adapters
    in computers running Microsoft Windows NT

    Installing Windows NT with an Adaptec 7700 Family host adapter(s)
    Using software parameters to change the configuration of Microsoft
    Windows NT drivers


Installation and Product Overview 
================================= 

Windows NT operating system can recognize the Adaptec AHA-2740 Series,
AHA-2840 Series, and AIC-7770 host adapters.  However, Adaptec supplies
the latest Windows NT drivers with this Family Manager Set that increases
the performance of these adapters.  The procedures given in this readme
detail installing Windows NT with the latest Adaptec drivers.

The latest arrow.sys driver supports Adaptec AHA-2740, AHA-2742, AHA-2740A,
AHA-2742A, AHA-2740T, AHA-2742T, AHA-2740A-Twin, AHA-2742A-Twin, AHA-2740W,
AHA-2742W, AHA-2840VL, AHA-2842VL, AHA-2840A, AHA-2842A, and the embedded
single-chip AIC-7770 SCSI host adapters. They are referred to collectively 
as the Adaptec 7700 Family host adapters.


Requirements
============ 

    An EISA-compatible computer, with an installed and configured Adaptec 
    AHA-2740 Series host adapter(s); or your VL-Bus compatible computer, 
    with an installed Adaptec AHA-2840 Series host adapter(s); or your 
    computer with an embedded AIC-7770 single-chip host adapter. Make sure 
    the primary setting on your TwinChannel host adapter is set to match the
    SCSI bus used for the boot disk.

    An installed primary (boot) floppy diskette drive. A 3.5-inch (1.44 MByte)
    or 5.25-inch (1.2 MByte) high-density floppy diskette drive is required. 

    An installed and configured CD-ROM drive (optional) for installing from 
    the compact disc. See your computer and peripheral documentation for
    details.

    The Windows NT distribution software and documentation.
 
    The Adaptec 7700 Family Manager Set Diskette for NetWare, OS/2, and 
    Windows NT.

    For the AHA-2740 Series, the computer's EISA configuration diskette and
    installation manual, including the AHA-2740 Series host adapter
    configuration (.cfg) and overlay (.ovl) files.

    These files come standard with your AHA-2740 Series host adapter.

    The Adaptec AHA-2740 Series or AHA-2840 Series User's Guide.


Performing a Windows NT Installation
====================================  

Follow these instructions if you are installing an Adaptec AHA-2740 
Series or AHA-2840 Series host adapter and Windows NT at the same time.
You may install Windows NT from a floppy drive or from a CD-ROM drive;
whichever you choose, make sure the hardware installation is completed 
prior to following these steps.


Note: Follow these procedures exactly to install the new driver. The install
program tries to access the old driver on other Windows NT floppy disks or
from the CD during installation.

    1)  If you choose to install Windows NT from a floppy drive, locate 
        the Windows NT Disk 1 for Floppy Installation. Make a backup copy 
        of this diskette.  If you are installing from a CD-ROM drive, locate
        the Windows NT Setup Disk for CD-ROM Installation. Make a backup copy
        of this diskette.

    2)  Delete the file arrow.sys from the backup diskette you just 
        created.

    3)  Put this disk into drive A (not drive B) and turn on your 
        computer.

    4)  When prompted, select Custom setup.

        Note: If you choose Express setup, the installation process
        is unable to detect your Adaptec host adapter and the installation
        fails.

    5)  Windows NT setup cannot recognize the adapter and displays none. 
        Press S to configure additional SCSI adapters.

    6)  From the list of additional SCSI adapters, select Other (Requires 
        disk provided by a hardware manufacturer).

    7)  Insert the Adaptec 7700 Family Manager Set Diskette for NetWare, 
        OS/2, and Windows NT into drive A and press Enter.

    8)  The screen displays the adapter similar to Adaptec 2740 / aic777x. 
        Press Enter.

    9)  If you want to add other host adapters, do so at this time by 
        following steps 6 through 8 for each additional adapter.

    10) Press Enter to continue with the Windows NT operating system setup.
        Follow the instructions given onscreen and in the Windows NT
        installation documentation.


Updating Windows NT with the New Driver
=======================================  

This section explains how to make the following hardware changes to your
computer without reinstalling Windows NT:

    Add an Adaptec host adapter that uses the same driver as one already
    installed on your computer, and add an Adaptec host adapter that uses
    a different driver.

    Swap an Adaptec host adapter for one that uses a different driver.

    Remove an Adaptec host adapter.

Note: These operations are similar but have important distinctions, as
described in the following sections. Read the instructions carefully 
before you change your computer configuration.


Adding a Host Adapter
=====================  

This section details installing a host adapter to a computer. If you 
are adding an Adaptec host adapter to a computer that already has an 
installed host adapter of the same family (for example, if you have 
added an AHA-2740 to a computer that already has an installed AHA-2740),
perform steps 1 through 5 only.

If you are adding a host adapter that uses a different driver, you must
perform all the steps in this section to ensure that the device driver 
for the new host adapter is both installed on your system disk and is 
enabled. 

The steps are as follows:

    1)  Shut down Windows NT.

    2)  Power OFF your computer and physically install the new host 
        adapter in an available slot. Refer to the host adapter hardware
        documentation for installation.

WARNING: Always refer to your computers documentation for instructions 
on opening the computer cover and adding boards.

    3)  Verify that there are no system resource conflicts (e.g. interrupt
        request level or DMA channel) between the new host adapter and 
        other hardware installed in the computer. Refer to the host adapter
        hardware documentation for instructions.

    4)  Restart the computer and, if necessary, run the EISA configuration
        utility (for EISA boards) before Windows NT reboots.

    5)  Boot Windows NT. If you have just added an Adaptec host adapter to 
        a computer that already has an installed host adapter of the same 
        family (for example, if you have added an AHA-2740 to a computer 
        that already has an installed AHA-2740), your installation is complete.

    6)  Select and start the Windows NT Setup program. (Its icon is usually
        found in the Main program group.) There is a brief pause while 
        Windows NT Setup scans your hardware configuration.

    7)  Select the Options pull-down menu and then select Add/Remove SCSI
        Adapters. The SCSI Adapter Setup program displays a list of host
        adapters currently installed.

    8)  Click on the Add button to add another host adapter type to the list.
        Expand the list and select the type of host adapter to be added. For
        this example, we assume you are adding an AHA-2740 to a computer that
        already has an AHA-1540C.

    9)  Click on the Install button.

        At this point, Windows NT Setup checks to see if the specified driver 
        (in this example, arrow.sys) has already been copied to the system 
        disk. If this type of host adapter was previously installed, the 
        following message appears:

           The driver(s) for this SCSI adapter are already on the system

    10) Click on Current if you want to use the existing device driver or 
        click on New if you want to replace it. If you select Current, skip
        to step 12.

        If the device driver has never been installed, this message appears:

           Please enter the full path to the Windows NT SCSI Adapter files.

    11) Change the path to the directory with the desired device driver, 
        then click on Continue.

        The device driver is copied to your system disk and the Windows 
        NT configuration is updated so that the new device driver loads 
        when Windows NT reboots.

    12) When the installation is complete, Windows NT Setup again displays
        a list of currently installed host adapter types. Verify that the
        new host adapter appears on the list.

    13) Add other types of host adapters if necessary (see steps 8 through 
        12 above), or click on Close to exit the SCSI adapters portion of
        Windows NT Setup and then close the program.

    14) When you see this message, click on OK to exit:

        The changes you have made will not take effect until the computer 
        is restarted.

        If this message does not appear, no changes have been made to the
        Windows NT system configuration.

    15) Restart your computer and Windows NT. It is possible that some drive
        letter assignments may change from the previous configuration.


Swapping a Host Adapter
=======================  
  
Swapping one type of host adapter for another is similar to the procedure 
for adding a host adapter. The important distinction is that you make all
software configuration changes while Windows NT is running.

    1)  Install the driver for the new host adapter by following steps 6
        through 15 in the section Adding a Host Adapter above.

        It is not essential to remove the device driver for the host 
        adapter you are replacing. Windows NT dynamically detects the
        absence or presence of host adapter hardware, and no problems 
        should arise if you leave the existing device driver installed. 
        You may remove the device driver later, after you have successfully
        rebooted Windows NT.

    2)  Once the new device driver is installed, shut down Windows NT 
        and replace the existing host adapter, as described in steps 1 
        through 5 of Adding a Host Adapter above. 

    3)  Restart your computer and Windows NT. It is possible that some 
        drive letter assignments may change from the previous configuration.

Caution: If the host adapter you are swapping controls the computer boot
device, you must follow the additional steps in the next section in order
for Windows NT to work correctly.


Swapping the Boot Host Adapter
==============================  
  
If the host adapter you are changing controls the system disk from which 
your Windows NT system loads, you must update the device driver in two
locations (because Windows NT boots in a two-stage process): the Windows 
NT device driver directory (i.e. \winnt\system32\drivers) and c:\ntbootdd.sys. 

In the first stage of booting, no software configuration is available and
Windows NT loads the device driver to control the computer boot disk from 
the file c:\ntbootdd.sys. Therefore, when you perform the steps described
above to swap a host adapter you must also explicitly copy the arrow.sys
device driver to c:\ntbootdd.sys (meaning arrow.sys is copied over and 
renamed as c:\ntbootdd.sys).

Note: The c:\ntbootdd.sys file is hidden, system, and read only; you must 
use an attribute change program to disable the hidden, system, and read 
only attributes. For example, using DOS, enter

         attrib -h -s -r c:\ntbootdd.sys.

ntbootdd.sys is always located on your C drive, even if a different disk 
is the system disk once Windows NT is booted. For example MS-DOS is 
installed on your IDE disk C, and Windows NT is installed on SCSI disk D.


Removing a Host Adapter
=======================  
  
Removing a host adapter can be as simple as physically removing it from 
the slot when your computer is shut down. Windows NT boots and functions
properly in this configuration, but a warning message is generated every
time you boot Windows NT.

Caution: If you have removed a host adapter but still have other host 
adapters of the same type installed in your computer, do not use Windows 
NT Setup to remove the device driver.

To eliminate the warning message, you must update the Windows NT software
configuration, as described in these steps:

    1)  Select and start the Windows NT Setup program. (Its icon is 
        usually found in the Main program group.) There is a brief pause
        while Windows NT Setup scans your hardware configuration.

    2)  Select the Options pull-down menu and select Add/Remove SCSI
        Adapters. The SCSI Adapter Setup program displays a list of the
        types of host adapters currently installed.

    3)  Select the type of host adapter you want to remove and click on 
        the Remove button. When the Windows NT Setup program asks you for
        confirmation, click on OK.

        Because SCSI device drivers are loaded during system bootup and 
        because they may be needed to load Windows NT itself, the following
        warning message appears:

           The SCSI adapter has been marked as a boot device. Removing it 
           may cause the system not to boot.

    4)  If you are sure you are removing the correct host adapter type, 
        click on OK.

    5)  Return to step 3 if you want to remove driver support for other 
        types of host adapters, or click on Close to exit the SCSI adapters
        portion of Windows NT Setup.

    6)  Close the Windows NT Setup program. When the following message 
        appears click on OK to exit:

            The changes you have made will not take effect until the 
            computer is restarted.

        If this message does not appear, no changes have been made to the
        Windows NT system configuration.

    7)  Restart your computer. Note that Windows NT Setup does not delete
        the device driver from your system disk; it only updates Windows NT
        software configuration information so that the device driver is no
        longer loaded during system bootup. 


Updating a Device Driver
========================  

If a software update is available for a particular host adapter device 
driver, you may update your Windows NT system without any hardware or 
software configuration changes by following these steps:

    1)  Copy the new device driver to the directory Xxxxx\System32\Drivers,
        where Xxxxx is the system root of Windows NT (typically named \winnt).

    2)  If you are updating the device driver that controls the computer 
        boot device, copy the same driver to the file c:\ntbootdd.sys.

Note: The c:\ntbootdd.sys file is hidden, system, and read only; you must
use an attribute change program to disable the hidden, system, and read 
only attributes. For example, using DOS, enter 

         attrib -h -s -r c:\ntbootdd.sys.

    3)  Shut down and restart your computer.


Troubleshooting
===============  

The boot manager for Windows NT contains recovery logic to allow you to 
return to the last known good configuration. If you have changed your 
host adapter configuration and Windows NT no longer boots, follow these 
steps to recover:

    1)  Undo any hardware changes you have made to the computer since it
        was last operational.

    2)  Reboot the computer. Watch the display carefully during bootup. If
        the following message appears, press the Spacebar and follow the
        instructions on the screen to continue booting with the last known 
        good configuration:

            Press spacebar NOW to invoke the Last Known Good menu

    3)  Once your computer is operational again, double check all of the
        hardware and software configuration changes you want to make. Look
        specifically for conflicts with parts of the existing system
        configuration that are not being changed.

If you cannot determine the source of the error, contact Adaptec Technical
Support for assistance at the telephone numbers listed below.

 
Adaptec Phone Numbers  
---------------------  
  
Technical Support:

   Automated Technical Support:          U.S. and Canada:  (800) 959-7274
   ============================          International  :  (408) 945-2550
      Interactive FAX Service
      On-Line Questions & Answers

   Live Technical Support:               U.S., Canada,
   =======================               International  :  (408) 934-7274
      M-F: 6:00am to 5:00pm
      Pacific Standard Time

Bulletin Board Service (BBS)                    (408) 945-7727  
24 hours a day (up to 14400 baud, using  
8 bits, 1 stop bit, no parity)  
  
Literature Hotline                              (800) 934-2766  
M-F: 6:00am to 5:00PM Pacific Standard Time  
  
Software Ordering (U.S.A. and Canada)           (800) 442-7274  
M-F: 6:00am to 5:00pm Pacific Standard Time  
  
International Software Ordering                 (408) 957-7274  
M-F: 6:00am to 5:00pm Pacific Standard Time  
  
Interactive Fax Service                         (408) 957-7150  
24 hours a day
