Name:         Mac OS 7.6.1 Update
Version:      n/a
Released:     April 7, 1997
Requires:     US Mac OS 7.6
Description:
Mac OS 7.6.1 Update is a set of software enhancements that
delivers improvements in stability for Macintosh and Mac
OS-compatible computers running Mac OS 7.6. After installing
the update, the Mac OS version on the computer will be Mac
OS 7.6.1.

This software is available in two formats (disk images and
"Net Install"):

1.  Four Disk Copy compressed images, which require Disk
Copy 6.1 or later to use. Download this software to your
hard drive and then double-click it to use it. Disk Copy 6.1
is available in the Utilities folder here.

2.  A complete Mac OS 7.6.1 Update "Net Install".  It includes
all software from all 4 Mac OS 7.6.1 Update disk images. 
This posting is provided as a convenience for those
customers who:
- want to download just one file.
- want a pre-configured "Net Install" to place on their
  hard drive or on a server.

*********************************************************
PLEASE NOTE:  
You do not need to download the "Net Install" if you have
already downloaded the 4 separate disk images of
Mac OS 7.6.1 Update.
*********************************************************

From the Read Me included with this software:


Mac OS 7.6.1 Update Overview and Installation

Who can use Mac OS 7.6.1 Update?

Mac OS 7.6.1 Update improves the reliability of Mac OS
computers.

If you are using a system software version prior to Mac OS
7.6, you must upgrade to Mac OS 7.6 before you install this
update. Additionally, some newer PowerBooks, introduced
after Mac OS 7.6, cannot use this update. To see if your
computer can use this update, see "How Do I Know What
Version of System Software I Have?" below.

IMPORTANT Do not install this update if you have a Macintosh
Performa 4400 or a Power Macintosh 4400, 5500, 6500, 7300,
8600, or 9600 series computer. You can obtain Mac OS 7.6 and
Mac OS Update 7.6.1 through the Mac OS Up-To-Date program.
If you have a PowerBook 3400, you need to download the Mac
OS 7.6.1 Update for the PowerBook 3400. For more
information, see the Mac OS Up-To-Date Web site at
http://www.macos.apple.com/macos/releases/fulfillment.html,
or call 800-335-9258.

How do I know what version of system software I have?

To find out what system software version your computer is
using, follow these steps:

1.  Make sure you are in the Finder. (To switch to the
Finder, open the Application menu, marked with an icon in
the upper-right corner of your screen, and choose Finder.)

2.  Open the Apple menu, located at the upper-left
corner of your screen.

* If the first item in the Apple menu is called About This
Computer, choose this item from the menu. In the box that
appears, check the words in the upper-right corner. If you
see the word "Enabler" under the line that reads "System
Software 7.6," you cannot install this update. If you see
"PowerBook 3400 1.0," then you need to download the Mac OS
7.6.1 Update for the PowerBook 3400. If the update is not
currently available, it should be available soon. If there
is no text between the line that reads "System Software 7.6"
and the copyright notification, you can proceed with the
installation.

* If the first item in the Apple menu is called About This
Macintosh, you have an earlier version of system software.
You must upgrade to Mac OS 7.6 before you can install this
update.

What's included in the Mac OS 7.6.1 Update?

After you install the Mac OS 7.6.1 Update, you should notice
improved stability, as well as the following fixes and
enhancements:

* Nearly all Type 11 errors eliminated Type 11 errors force
you to restart the computer without saving your work. Most
of these errors are now properly classified as Type 1 or
Type 2 errors, which cause the active application to quit,
but do not force you to restart the computer. Type 11 errors
occur while using "native" applications used by computers
with PowerPC processors.

IMPORTANT When you get an error that forces a program to
quit, you should still save your work in other open programs
and restart the computer.

* Type 112 errors eliminated Type 112 errors, which occurred
when using some multimedia applications, have been
eliminated.

* CFM-68K Runtime Enabler included for computers with 68030
and 68040 processors Computers with 68030 and 68040
processors can now use programs that require the CFM-68K
Runtime Enabler. The CFM-68K Runtime Enabler is a system
extension which allows application programs to share code
resources. Because of a problem with this extension, it was
not included with Mac OS 7.6. This problem has been fixed.

Apple products that use the CFM-68K Runtime Enabler include
OpenDoc, the LaserWriter 8.4 driver, Apple Telecom software
3.0 and later, and the Apple Media Tool. Applications from
other companies that require the CFM-68K Runtime Enabler
include America Online 3.0 and Internet Explorer 3.0. (If
you continue to experience problems with non-Apple programs
that use the CFM-68K Runtime Enabler, contact the
manufacturer.)

* Improved compatibility with serial devices when using
Performa 5400 and 6400 and PowerBook 3400 computers
Equipment connected to the serial port now communicates
correctly with these computers. (Previously, some devices
using the serial port were not recognized by these computers
if the devices were connected when the computer started up.)

* Infrared problems fixed on PowerBook 1400 and 3400
computers The computer no longer freezes if the infrared
window is blocked when the computer is starting up or
transferring files.

* Improved reliability when using large QuickTime files, or
using QuickTime in low-memory situations Application
programs that use QuickTime files work more reliably when
working with large files and when using QuickTime files in
low-memory situations.

* Printing improved for Performa and Power Macintosh 5400
and 6400 series computers using non-Apple printers over
LocalTalk networks Performa and Power Macintosh 5400 and
6400 computers now print at an acceptable speed on non-Apple
printers over a LocalTalk network. (Previously, printing was
very slow.)

* Video applications recognize that MPEG is installed Video
applications, including the Apple Video Player, now
correctly recognize when MPEG software or hardware is
installed.

* Storage PC Cards no longer require a utility program to
appear on the desktop PC Cards used for storage now appear
on the desktop when inserted. A mounting utility program is
no longer required.

* Only two low-battery messages displayed on PowerBooks
before computer shuts itself down Only two low-battery
messages are displayed, instead of three, before the
computer shuts itself down. The first message appears
approximately two to four minutes before shutdown. The
second occurs approximately ten seconds before shutdown.

* PowerBook 1400 computers now wake from sleep faster When
you wake the computer, there is less of a delay before the
screen appears.

* Contrast and brightness controls work as expected on
PowerBook 1400 computers The screen will get brighter or
show more contrast when the plus (+) controls are pressed.
Previously, the functionality of the plus (+) and minus (-)
controls were reversed on PowerBook 1400 computers.

* On the PowerBook 3400, the CD-ROM drive works correctly if
inserted when the computer is on The removable CD-ROM drive
now appears correctly on the desktop if it is inserted in
the expansion bay while the computer is on.

* New version of Apple System Profiler IDE-based CD-ROM
drives, such as the built-in CD-ROM drive for the PowerBook
1400, are now listed in the Apple System Profiler window.

* New version of AppleVision software A new version of
AppleVision software improves reliability on computers that
currently use AppleVision monitors.

* Graphics acceleration software works correctly with a
universal System Folder Graphics acceleration software now
works correctly when used with a universal System Folder.
Additionally, the Graphics Accelerator extension and the
Graphics Accelerator 2 extension have been merged into the
ATI Graphics extension.

* New version of Apple Video Player Video-capture and TV
tuner PC Cards now work correctly on PowerBook 3400
computers. Additionally, all computers can use the
AppleScript scripting language to automate tasks in Apple
Video Player.

* Settings in Energy Saver control panel are saved properly
Changes made to automatic startup and shutdown settings are
now saved.

* Large files copied between IDE hard disks sometimes
crashed the system Files over 1 MB can now be copied between
two IDE hard disks without causing a system crash.

* Better performance when using video-capture expansion
cards and ATI accelerators Video capture is faster on
computers when using video-capture PCI expansion cards with
ATI graphics accelerators.

Besides the bug fixes provided by Mac OS 7.6.1 Update,
several of the bug fixes and features that have been
previously released as extensions are now part of the OS.
You may notice that these extensions have been removed from
the Extensions folder. After installing the Mac OS 7.6.1
Update, you will no longer need these extensions in your
Extensions folder.

54xx/64xx Update version 1.0 54xx/64xx Update version 1.1
7.5.5 SCSI Server Update Assistant Toolbox PCI Network
Legacy Layer version 1.0 PCI Network Legacy Loader version
1.0 PowerBook 1400 ATA Flash PowerBook 1400 PMU Updater
PowerBook VM Tuner for OS 7.6 PowerMac Format Patch PowerPC
Interrupt Extension

For additional technical information, see the Mac OS 7.6.1
Update Technote. You can find it at the Apple Developer
World site at http://devworld.apple.com/dev/technotes.shtml.

Known problems with Mac OS 7.6.1

* Monitors Control Panel is not included in "Mac OS 7.6.1
base" and "Mac OS 7.6.1 all" extension manager sets If you
have a computer that does not have the Monitors & Sound
control panel and you select the "Mac OS 7.6.1 base" or "Mac
OS 7.6.1 all" extension manager sets, you will also need to
select the Monitors Control Panel.

Known problems with Mac OS 7.6 not fixed with this update

* Connectix Speed Doubler disabled when Mac OS 7.6.1 is
installed There is a problem using Speed Doubler versions
1.3.1 and earlier and version 2.0 with Mac OS 7.6. If you
use one of these Speed Doubler versions, it will be disabled
after you install Mac OS 7.6.1 Update. Connectix is aware of
this problem and is providing a free update. For more
information, see the Connectix Web site at
http://www.connectix.com, or call 800-839-3632.

* Versions of several Apple software products compatible
with computers with 68030 and 68040 processors that require
the CFM-68K Runtime Enabler not included with Mac OS 7.6
Because of a problem with the CFM-68K Runtime Enabler, the
extension and compatible versions of several Apple software
products (such as OpenDoc, the LaserWriter 8.4 driver, Apple
Telecom software 3.0 and later, and the Apple Media Tool)
were not included with Mac OS 7.6. The CFM-68K Runtime
Enabler problem has been fixed and computers with 68030 and
68040 processors can now use programs that require this
extension. The latest version of this software is available
on "Apple SW Updates" on the Internet
(http://www.info.apple.com), America Online (keyword:
AppleComputer), and CompuServe (GO APLSUP). To get a list of
authorized mirror sites on the Internet, access the
following URL:
http://support.info.apple.com/ftp/mirrors.html

* LaserWriter 8.3.4 results in an error message when you
print to a file and then drag the resulting file to a
desktop printer If you use the LaserWriter 8.3.4 driver to
print to a file and then drag the resulting file to a
desktop printer, you get a message stating that the print
library is missing. To work around this problem, update your
LaserWriter software to LaserWriter 8.4.1. This software is
available on "Apple SW Updates" on the Internet
(http://www.info.apple.com), America Online (keyword:
AppleComputer), and CompuServe (GO APLSUP). To get a list of
authorized mirror sites on the Internet, access the
following URL:
http://support.info.apple.com/ftp/mirrors.html

* After you install Mac OS 7.6.1 Update, the easy install
option no longer works for reinstalling Mac OS 7.6 Once you
have installed Mac OS 7.6.1 Update, you can no longer use
the easy install option for reinstalling Mac OS 7.6
(installers cannot update over newer versions of software).
You must use the clean install option to reinstall Mac OS
7.6. Specific components can be installed using the custom
install option.

* Notes on Custom Installs If you perform a custom install
of a component from your Mac OS 7.6 CD (or floppy) and
already have system 7.6.1 running on your system, you may
notice the following warning dialog:  "The file <name of the
component>  already on  <name of your hard drive>  is newer
than what you are about to install. Click Newer to keep the
Newer file, Older to replace that file, or Cancel to stop
installation." You should pick Newer.

IMPORTANT After the Mac OS 7.6 install finishes installing
the selected components, you should then reinstall the Mac
OS 7.6.1 Update to ensure that the components you just
installed are up-to-date.

* Installing QuickDraw GX for use with a non-Apple printer
If you want to use QuickDraw GX with a non-Apple printer,
you need to obtain a QuickDraw GX printer driver or remove
QuickDraw GX. If QuickDraw GX is installed, you will not be
able to use your non-Apple printer without a GX driver.
Contact your printer vendor for details. (Turning off
QuickDraw(TM) GX in the Extensions Manager will solve this
problem.)

*	Using the QuickDraw GX Installer when Adobe Acrobat is
installed If you use the QuickDraw GX Installer to either
install or remove QuickDraw GX and your computer has Adobe
Acrobat installed, Acrobat will display a message about
missing fonts each time the computer is restarted. Reinstall
or turn off Acrobat to stop the warning message. (Turning
off QuickDraw(TM) GX in the Extensions Manager will not
solve the problem.)

* Video Startup extension and Apple Video Player improperly
installed by Mac OS 7.6 Mac OS 7.6 improperly installs the
Video Startup extension and the Apple Video Player
application on Macintosh TV. You should throw the Apple
Video Player application and the Video Startup extension in
the trash. If these components are present, the Mac OS 7.6.1
Update will update them to newer versions which still do not
work on Macintosh TV.

* 3D images cannot be viewed with OpenDoc 3DMF Viewer 1.0.1
with QuickDraw 3D 1.5 or 1.5.1 installed If QuickDraw 3D 1.5
or 1.5.1 is installed, a message about insufficient memory
appears when attempting to place a 3D image in an OpenDoc
document. Increasing the viewer's memory size with the Get
Info command in the File menu does not solve the problem. To
use the 3DMF Viewer, install an earlier version of QuickDraw
3D.

* Internal speaker on Power Macintosh 5500 and 6500
computers remains muted after disconnecting external
speakers If the external speakers are connected when the
computer starts up and then disconnected, the internal
speakers remain muted. To work around this problem, restart
the computer after disconnecting the external speakers. The
internal speaker should work normally.

*  Adjusting the volume by pushing the Buttons on  the front
of the Macintosh LC575 will not register on the Monitors and
Sound Control Panel If you use the front bezel button to
change volume on a Macintosh LC575 the change in volume will
not register on the "Computer System Volume" slider in the
Monitors and Sound control panel. You will only have the
Monitors and Sound Control Panel on a LC575 if you have and
AppleVision Monitor or are running a universal system.

* Macintosh customers with  the DayStar Digital 040 cards
will need to do the following: If you use the DayStar
Digital 040 card, you will have to first remove the card,
then install Mac OS 7.6.1 Update, and then reinstall the
DayStar Digital 040 card

* Two system folders when no desktop printer is selected If
you notice two active system folders on your hard drive,
create a desktop printer to work around this problem.  To
create a desktop printer select the Chooser in the Apple
Menu, select any printer, and then press the Create button.

Before you install

Use the Disk First Aid application program before you
install the Mac OS 7.6.1 Update to check your hard disk for
problems. Disk First Aid comes on the Mac OS 7.6.1 Update,
Disk 1 disk and on the Disk Tools disk that came with your
computer. Follow these steps:

1. Insert the Mac OS 7.6.1 Update, Disk 1 disk into the
floppy disk drive.

2. Double-click the Disk First Aid icon to open it.

3. Click the icon for the disk you are installing software
on.

4. Click Verify.

5. If Disk First Aid tells you your disk appears to be OK,
choose Quit from the File menu. If Disk First Aid reports
problems with your hard disk, see the manual that came with
your computer.

Note:  If you have a problem using Disk First Aid, see the
manual that came with your computer.

Installing Mac OS 7.6.1 Update

Before you install Mac OS 7.6.1 Update, you should have at
least 10 MB of disk space temporarily available on your hard
disk.

It is very important that you follow these steps in order to
install Mac OS 7.6.1 Update:

1.  Open the Extensions Manager control panel.

2.  Choose "Mac OS 7.6 Base" from the Sets pop-up menu.
(This choice will only appear if you are using Mac OS 7.6.
If it does not appear, you need to upgrade to Mac OS 7.6
before installing this update.)

3.  If you have third-party peripheral devices that are
required for installation and that require an extension,
turn those extensions back on. (Examples include video
drivers, drivers for alternative input devices, network card
drivers, and drivers for removable media drives, such as
CD-ROM drives.)

4.  Restart your computer.

5.  Insert the Mac OS 7.6 Update, Disk 1 disk into the
floppy disk drive.

6.  Double-click the Installer icon to open it.

7.  After you read the licensing agreement, click Agree to
continue with the installation.

8.  Make sure that the destination disk indicated on the
screen is the disk that contains Mac OS 7.6. If the wrong
disk name appears, click the Switch Disk button until the
correct disk name appears.

9.  Click Install.

10.  Follow the instructions on the screen. Onscreen
messages tell you when you need to insert the other disks.

11.  When the installation is complete, click Restart to
restart your computer.

12.  Use the Extensions Manager to turn on additional
extensions.

13.  To use the extensions you turned on, restart the
computer. (If you encounter problems, choose "Mac OS 7.6.1
Base" from the Sets pop-up menu , restart your computer,
then turn on other extensions one at a time to determine if
one of them is causing the problem.)

14. After you install Mac OS 7.6.1 Update, you may want to
restart your Macintosh while holding the command (()()) and
option key. This will rebuild the desktop on your Macintosh
and ensure that no Icons are generic.

If you cannot install this update successfully:  If you have
trouble installing this update, try choosing "All Off" from
the pop-up menu in Step 2. If you failed to run the Disk
First Aid application program, follow the steps in "Before
you install," then follow the steps for installing Mac OS
7.6.1 Update.


Updating a universal System Folder

A universal System Folder can be used to start up any
computer that can use Mac OS 7.6.

Only some users need a universal System Folder. You might
want to create a universal System Folder if you
* start up different computer models using removable media
  or an external startup disk
* want to simplify support of multiple
  users by giving all users the same System Folder

The universal System Folder will not contain
* the Password Security control panel
* ATI 3D Accelerator, ATI MPEG Accelerator, ATI YUV
  Accelerator, and ATI 6500 Graphics Extension
* ATI Graphics Accelerator 1.2.2 (ATI Graphics Accelerator
1.1.4 is installed in the universal System Folder)
* the Infrared control panel, IrDALib, and IRLanScannerPPC
* the CDStrip control strip module
* the TV/FM 1.5.3

If you are responsible for only one computer, you shouldn't
need to create a universal System Folder.

1. Start with a universal System Folder created by the
Install Mac OS program (available on the CD or floppy disks
that came with Mac OS 7.6).

2. Update your universal System Folder by installing Mac OS
7.6.1 Update.

(c) 1997  Apple Computer, Inc.  All rights reserved. Apple,
the Apple logo, LaserWriter, LocalTalk, Mac, Macintosh,
OpenDoc, Performa, PowerBook, Power Macintosh and QuickTime
are trademarks of Apple Computer, Inc., registered in the
U.S. and other countries. Disk First Aid, Extensions
Manager, Finder, and QuickDraw are trademarks of Apple
Computer, Inc. PowerPC is a registered trademark of
International Business Machines Corporation, used under
license therefrom.
