Apple Releases Mac OS 8.5.1

Update Fixes Bugs and Adds New Sherlock Features

Cupertino, California—Dec. 7, 1998—Apple Computer, Inc. today announced Mac OS 8.5.1, an update to the popular Mac OS 8.5 released in October, which fixes several bugs and adds new Sherlock plug-ins for popular Internet sites. The Mac OS 8.5.1 update is available immediately for download from Apple’s website ( free of charge. Localized versions of the update will be available later this month.

Mac OS 8.5.1 remedies problems associated with CD-ROM installation, AppleScript, and a rarely-seen data corruption problem. There is also improved support for third party ADB devices, such as joysticks. Mac OS 8.5.1 also includes an updated version of Sherlock, which improves communication through Internet proxy firewalls, and adds plug-ins for Internet sites such as,, CNN Interactive, Direct Hit,, and LookSmart. These plug-ins are also available from Apple’s website (

“It’s amazing how few bugs we’ve found in Mac OS 8.5,” said Phil Schiller, Apple’s vice president of worldwide product marketing. “It’s been one of our most reliable operating system releases ever, and with this update, it’s rock-solid.”

System Requirements & Availability
The Mac OS 8.5.1 update requires a Macintosh with Mac OS 8.5 installed, and 16MB of physical RAM with virtual memory set to at least 24MB. Computers with Apple PC Compatibility Cards are not supported.

The Mac OS 8.5.1 update is available immediately for download from Apple’s website ( free of charge. Localized versions will be available later this month. In addition to Internet download, the Mac OS 8.5.1 update will be distributed on CD-ROM starting in January. The CD-ROM can be ordered from the Apple Software Order Center at (800) 293-6617 for U.S. $9.95 (shipping and handling fee).

Apple Computer, Inc. ignited the personal computer revolution in the 1970s with the Apple II, and reinvented the personal computer in the 1980s with the Macintosh. Apple is now recommitted to its original mission—to bring the best personal computing products and support to students, educators, designers, scientists, engineers, businesspersons and consumers in over 140 countries around the world.

Press Contacts:
Staci Sheppard
Apple Computer, Inc.

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