Yosemite Beta 2

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THE INFORMATION CONTAINED IN THIS MESSAGE IS UNDER NON-DISCLOSURE

OS X Yosemite Seed Note

Installation Instructions

OS X Yosemite Developer Preview 2 is pre-release software. Do not use this pre-release software in a commercial operating environment or with important data. You should back up all of your data before installing this software and regularly back up data while using the software.
Please be aware that you will not be able to revert back to your previous system after updating. Please install this update on a system you are prepared to erase if necessary.

If an installation of OS X Yosemite Developer Preview 2 fails, try using Disk Utility from a Recovery HD to repair the disk.
Developer Preview System Requirements
The OS X Yosemite Developer Preview supports the following Macs:
- iMac (Mid 2007 or newer)
- MacBook Air (Late 2008 or newer)
- MacBook (Late 2008 Aluminum, or Early 2009 or newer)
- Mac mini (Early 2009 or newer)
- MacBook Pro (Mid/Late 2007 or newer)
- Mac Pro (Early 2008 or newer)
- Xserve (Early 2009)

Notes and Known Issues

Extensions Known Issues
- Finder Sync extensions may not function correctly.

Family Sharing Known Issues
- Shared purchase history page on Mac App Store and iOS App Store are disabled.
- Items already owned by family members must be re- downloaded from the Purchased page (not Store pages) to get them free of additional charge.
- Under 13 account creation is disabled in Developer Preview 2.
- Email invitations are not enabled; members can join using push notifications or via inline password entry flow.
- "Ask to Buy” request notifications do not appear and request notifications are not actionable from devices running iOS 8 beta 2.

Finder Known Issues
- Some graphical corruption may be visible when using Icon View in Finder.

Handoff Known Issues
- When using a Mac, Handoff may sometimes stop showing icons on other iOS and OS X devices. Powering the Mac off and then back on can sometimes work around this issue.

Phone Calls Known Issues
- Phone calls to and from the Mac may sometimes not complete or send and receive audio.

iCloud Drive Notes
- iCloud Documents & Data created with OS X Yosemite Developer Preview will be deleted from the servers at some point during the beta period. Your devices using the Developer Preview will maintain copies of those deleted iCloud Documents & Data. iCloud Documents & Data managed with iOS 7 or OS X Mavericks will remain unaffected.
- iCloud Documents & Data created with OS X Yosemite Developer Preview will not sync with with Documents and Data managed with iOS 7, OS X Mavericks, or earlier operating systems.
- The UI for managing iCloud Documents & Data does not show the documents and data for iOS 8 Beta and OS X Yosemite Developer Preview. It only shows the documents and data synced with previous operating systems.
- Changes to iCloud Documents & Data in Pages, Numbers, and Keynote on Macs using OS X Yosemite Developer Preview are only available on other devices using OS X Yosemite Developer Preview or iOS 8.0 beta. Any changes from devices using earlier versions of OS X or iOS will not be available. Changes will also not be visible in Pages, Numbers, and Keynote on iCloud.com.

iCloud Known Issues
- Some account password prompts may request the same login information several times before dismissing.

iPhoto & Aperture Notes
- Only iPhoto 9.5.1 and Aperture 3.5.1 will run on OS X Yosemite Developer Preview 2. Older versions of iPhoto and Aperture will not launch.

iPhoto & Aperture Known Issues
- iCloud Photos cannot be turned on or off via System Preferences for iPhoto or Aperture.

Mail Known Issues
- Mail may not be able to set up new Mail accounts within the Mail application.

Notes Known Issues
- Notes synced over IMAP may be duplicated on first sync after upgrade.
Remote Desktop Known Issues
- Apple Remote Desktop feature Changing Client Settings is not supported for Developer Preview 2.

Safari Notes
- Subpixel rendering is now on by default for all web content. Web sites or in-app web views with extremely tight design constraints may render differently.
- In OS X Yosemite Developer Preview 2, CSS object model getters will return fractional double values based on subpixel layout and rendering metrics instead of rounded integral values.

Safari Known Issues
- Some panels and buttons may not be accessible or operate as expected.
- Typing a partial site name and pressing Return can cause navigation to a search engine result page instead of the expected navigation to a commonly visited website identified as a Top Hit.
- Using Safari Test Drive on multiple systems which are configured to sync Chrome or Firefox bookmarks to Chrome/Firefox cloud-based sync services may cause duplication of bookmarks.
- Date & Size limits set in Safari are not enforced in Developer Preview 2.
- Safari may stop responding while loading video when playing Netflix content.
- When changing languages while playing Netflix content, it may take several seconds for the audio to switch to the new language.
- Keystrokes may trigger alert sound when in Netflix full- screen playback mode.
- Users on 2011-based hardware may see a request to install Silverlight on netflix.com. Reloading the page, or restarting Safari should fix the issue.

Tools Notes
-- In Developer Preview 2 unsigned or improperly signed kexts will not be loaded. To use unsigned kexts during development, this strict check can be disabled by adding a “kext-dev- mode=1” boot arg.
- AVFoundation changes the way some ID3 metadata values are represented as AVMetadataItems for binaries that are linked with the Developer Preview 2 SDK.
- Installing kernel extensions on systems running Developer Preview 2 may make your system un-bootable. To fix the issue, boot into the Recovery Partition and run the following:
- touch /Volumes/<10.10 Partition>/System/Library/ Extensions
- kextcache -u /Volumes/<10.10 Partition>
- In OS X Yosemite Developer Preview 2 and iOS 8.0 beta 2, the NSURLSessionTask class provides a new priority property. Complete usage details are available in the NSURLSession.h header file, provided by the Foundation framework.
Other Known Issues
- Some text may not be localized to the selected system language.
- Some languages may have clipped or misaligned layout.
- Some Accessibility features may not function correctly in Developer Preview 2.
- Some panels may appear transparent.
- Some 64-bit preference panels may fail to load after restarting System Preferences in 64-bit mode. Relaunching System Preferences resolves the issue.
- Systems without a display attached may experience decreased performance.
- Some popup and pulldown buttons may appear misaligned and clipped. This will be fixed in an future Developer Preview.
- iMovie and Final Cut Pro X will not work with Developer Preview 2.
- Some operations in Disk Utility may fail on volumes that have installed OS X Yosemite. Use the diskutil cs command line tool to make these modifications.

Auto-Submission of Diagnostic and Usage Data
By default, OS X Yosemite Developer Preview builds automatically send anonymous diagnostic and usage data back to Apple. This includes information about crashes, freezes, kernel panics, and information about how you use Apple and third-party software, hardware, and services. This information is used to help Apple improve the quality and performance of its products and services. The preference is cleared in this seed. This will allow the collection of anonymous diagnostic and usage data to help deliver a high quality release for our customers. If necessary, this setting can be disabled in the Privacy tab in the Security & Privacy preferences pane.
Bug Reporting

This build is being provided to you for testing and development purposes. Should you encounter any problems, submit a bug report using the online Bug Reporter at http://bugreporter.apple.com/. Please make sure to include “10.10 (14A261i)” in the bug title and description. This information will ensure that your bug is processed quickly.
When submitting a bug report, make sure to include a Summary, Steps to Reproduce, Expected Results, Actual Results, and the diagnostic output generated by running sudo sysdiagnose in Terminal, or use the special key chord Control-Option-Command-Shift-Period.
For complete instructions on submitting bug reports, visit the Bug Reporting page at http://developer.apple.com/bugreporter/.
Thank you for your support,
Worldwide Developer Relations
Apple, Inc.

Legal Notices
The OS X pre-release software identified above and the OS X Software Update Seed Configuration Utility are Apple Confidential Information and your use of such software is subject to your Registered Apple Developer Agreement, Mac Developer Program License Agreement, and the applicable license agreements accompanying such software. Distributing such software to anyone other than another Registered Apple Developer who is working for the same entity as you is considered a violation of your agreement with Apple and is damaging to both Apple and those who develop for the Apple platform. We sincerely appreciate your efforts to keep this Apple software Confidential.
You agree that you will not export or reexport any of the software or Confidential Information received from Apple (a) into (or to a national or resident of) any U.S. embargoed countries or (b) to anyone on the U.S. Treasury Department's list of Specially Designated Nationals or the U.S. Department of Commerce Denied Person's List or Entity List. You also agree that you will not use said software for any purposes where prohibited by United States law, including, without limitation, the development, design, manufacture or production of nuclear, missile, chemical or biological weapons.

THE INFORMATION CONTAINED IN THIS MESSAGE IS UNDER NON-DISCLOSURE