Java for Mac OS X 10.5 Update 10 delivers improved compatibility, security, and reliability by updating J2SE 5.0 to 1.5.030, and updating Java SE 6 to 1.6.026 for 64-bit capable Intel-based Macs. J2SE 1.4.2 is no longer being updated to fix bugs or security issues and remains disabled by default in this update. Please quit any Web browsers and Java applications before installing this update. See for more details about this update. See for information about the security content of this update.
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Java for Mac OS X 10.5 Update 10 delivers improved compatibility, security, and reliability by updating J2SE 5.0 to 1.5.030, and updating Java SE 6 to 1.6.026 for 64-bit capable Intel-based Macs. J2SE 1.4.2 is no longer being updated to fix bugs or security issues and remains disabled by default in this update. Please quit any Web browsers and Java applications before installing this update. See for more details about this update. See for information about the security content of this update.
Out with the old: Dead (and soon-to-be-dead) macOS features As much as Mojave adds, building on top of High Sierra’s foundation and laying out a path toward tons of new Mac apps ported over from the iPhone and iPad, the operating system is just as concerned with removing things that Apple views as outdated or unnecessary. The vast majority of people won’t notice that most of it is gone, but it’s going to hit longtime set-in-their-ways Mac users and anyone who relies on old apps that they won’t or can’t upgrade (either because the new version costs money or because the app is unmaintained). The end of the line for 32-bit Mac apps. Andrew Cunningham Mac OS X began life as a 32-bit operating system, but a slow, steady transition to 64-bit hardware and software has been happening for over 15 years.
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Today’s Macs—and any Mac running Mojave or any version of the operating system going all the way back to —have been all 64-bit, barring a handful of first-party apps and background services and a steadily shrinking list of third-party apps. Still, 32-bit apps run just as well as they did when Snow Leopard shipped on 32-bit Intel Macs back in 2009. That doesn’t change in Mojave, but this is the last version of macOS that will run those 32-bit apps at all. To recap, here’s the full timeline of macOS’ 32- to 64-bit transition:.
June 2003: The PowerPC G5 CPU is, and with Mac OS X 10.3 Panther can theoretically address up to 8GB of RAM. April 2005: Mac OS X 10.4 Tiger —they can be spun off from another process or run via the Terminal. June 2005: Apple announces that, which are still primarily 32-bit. August 2006: Apple launches the Intel Mac Pro with a 64-bit Woodcrest CPU; mainstream 64-bit Core 2 Duo Macs follow shortly afterward. October 2007: Mac OS X 10.5 Leopard launches; Universal Binaries can run on 32-bit and 64-bit Intel and PowerPC machines, covering four architectures within a single app.
Unlike Windows, Apple never ships separate 32- and 64-bit versions of Mac OS X. August 2009: Mac OS X 10.6 Snow Leopard still runs on 32-bit chips, but for the first time everything from the apps to the OS kernel.
Snow Leopard’s 64-bit capabilities are a major component of Apple’s marketing push, which infamously includes “.” However, most systems still default to loading the 32-bit kernel. July 2011: Mac OS X 10.7 Lion drops support for 32-bit Intel CPUs (Snow Leopard had already ended all support for PowerPC systems). Older Macs continue to default to the 32-bit kernel and 32-bit drivers, but new Macs introduced in this era typically default to the 64-bit kernel.
July 2012: OS X 10.8 Mountain Lion boots into the 64-bit kernel by default on all systems that support it, including a few that previously defaulted to the 32-bit kernel. In the process, a few 64-bit systems with 32-bit graphics drivers and 32-bit EFIs are dropped from the support list. June 2017: Apple announces macOS 10.13 High Sierra and says it’s the last release that will run 32-bit apps “.”. January 2018: All new apps submitted to the Mac App Store need to be 64-bit only.
April 2018: High Sierra’s 10.13.4 update about “not optimized” (read: 32-bit) apps the first time they’re launched. June 2018: All new apps and updates to existing apps submitted to the Mac App Store need to be 64-bit only. Apple announces macOS Mojave, which will be the last version of the OS to run 32-bit code.
September 2018: Apple releases Mojave. In Mojave, 32-bit apps will continue to run, but you’ll see a nag message when you launch them, letting you know that they need to be updated in the future to continue working.
You’ll see the same message if you use a 64-bit app with 32-bit plugins or any other 32-bit dependencies. You can use the “Kind” column in Activity Monitor to see whether apps you’re running are 32- or 64-bit, and there’s a new “Legacy Software” section in the System Information utility that also lists 32-bit apps on your system along with their developers (if the apps have been properly signed). Apple has included a “64-bit testing mode” in Mojave so developers can have a version of macOS that flatly refuses to run 32-bit code. Boot your Mac into Recovery Mode by holding down Command-R at startup, open the Terminal, and type nvram boot-args='-no32exec' to enable the testing mode. To turn it back off, repeat the same steps but type in nvram boot-args=' instead. 32-bit apps in this mode will simply crash without launching, listing 64-bit mode as the reason in their crash logs to help Apple and developers distinguish them from other crashes. Whether macOS 10.15 will include a more graceful failover remains to be seen.
The good news is that most people are never going to notice the difference between a 32-bit-capable Mac and a 64-bit-only Mac, because the vast majority of common applications have been 64-bit for years now. The biggest exceptions are old versions of apps that you can’t or don’t want to upgrade (like Photoshop and Microsoft Office) and open source apps whose developers haven’t had the development resources or a particularly good reason to move away from 32-bit (as of this writing, projects like and ). Mojave gives those developers a good reason, at least. 32-bit stuff that won’t make the jump The bad news is that the end of 32-bit support means the end of a handful of legacy Mac stuff that some people still occasionally use:. The last vestiges of QuickTime 7 that remain in macOS, including the separate you can still download (this app continued to offer QuickTime 7 Pro features for users with product keys).
The Mac’s “InkServer” handwriting recognition service for touchscreens and external drawing tablets. The legacy (which is super old and insecure and you shouldn’t be using anyway; download Java directly from Oracle instead, if you must). Any apps still using the legacy, which was developed as a bridge between classic Mac OS applications and Mac OS X (the writing has been on the wall for Carbon apps since 2007 when Apple ). A handful of developer-facing system processes. Apple lists mdworker32, quicklookd32, and qtkitserver as legacy 32-bit services with newer 64-bit equivalents you should use instead.
An orderly transition For a company like Apple, which sometimes removes hardware and software features before people are ready to let go of them, the removal of the last vestiges of macOS’ 32-bit support actually feels pretty generous and well-timed. Developers have had many, many years to create 64-bit versions of their apps, and almost all of them have.
Any stragglers who will only go 64-bit because they have to have known this was coming since High Sierra was announced, and they’ll have until around this time next year to actually get those updated apps and plugins out the door. For anyone who simultaneously wants to install macOS 10.15 next year while still running 32-bit Mac apps, the easiest solution will probably be to run those apps inside a virtualized version of High Sierra or Mojave—your computer’s processor won’t suddenly become incapable of running that code, after all. But if you’ve got any mission-critical 32-bit apps you’re still holding on to, it’s past time to find a good replacement.