Mac Os 10.8.0 Update

2021年9月15日
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*Mountain Lion update can improve battery life for some Mac notebooks Our tests show improvements over 10.8.0, though still not as good as under Lion. Chris Foresman - Aug 24, 2012 7:20 pm UTC.
*Mac OS X Mountain Lion V10.8.3 is a very powerful and reliable Macintosh Operating System for all the users. Mac Os X 10.8 0 Mountain Lion Free Download Free Mac Os 10.8.5 Download.
Apple’s release notes for the OS X 10.8.1 update released on Thursday made no mention of widely reported issues with laptop battery life under the initial shipping version of Mountain Lion. However, our testing reveals that the update can indeed significantly improve the runtime of Apple laptops over the original shipping version of Mountain Lion.
OS X Mountain Lion (version 10.8) is the ninth major release of macOS, Apple Inc.’ S desktop and server operating system for Macintosh computers. OS X Mountain Lion was released on July 25, 2012 for purchase and download through Apple’s Mac App Store, as part of a switch to releasing OS X versions online and every year, rather than every two years or so.
That’s the good news. The bad news is that battery life may still not be as good as it was under Lion (OS X 10.7.4). And according to scattered reports from readers, the fixes that accompany the update may not fix the situation for everyone.
Shortly after Mountain Lion was released in July, MacBook Pro and MacBook Air users reported seeing significantly less battery life after installing the new OS. Our own initial checks showed that the battery indicator on two different laptops was indeed showing much shorter battery life than we had expected, but the estimated time shown by OS X is still just that—an estimate.
More testing using a Retina MacBook Pro, however, confirmed a 38 percent reduction in battery life simply running Mountain Lion versus Lion. Under Lion, we were able to get consistent 8-hour battery life running our everyday workload. After installing Mountain Lion and running the same software, battery life plummeted to just over 5 hours.
Apple could not confirm any cause for the difference to Ars. However, the company’s engineers were reportedly contacting affected customers to collect log data for analysis.Inexplicable improvement
We immediately began putting those claims to the test after downloading and installing 10.8.1 on Thursday. Indeed, the battery indicator on both my 2010 11’ MacBook Air and the 15’ Retina MacBook Pro test unit began reporting significantly improved life compared to 10.8.0.
My MacBook Air typically reports between 4.5 and 5 hours on a full charge, while after installing Mountain Lion it would only show about 3.5 hours. After installing the update, it began reporting 4.5 hours consistently. Still, my MacBook Air has seen over two years of constant charge and discharge cycles, and its battery isn’t in new condition. I also didn’t have any recent runtime tests for comparison.Advertisement
However, my Retina MacBook Pro had just recently been used to run comparison battery tests under 10.7.4 and 10.8.0. I immediately installed the 10.8.1 update, set up all my usual apps, and disconnected the MagSafe 2 power adapter. The computer ran constantly for 7 hours and 5 minutes before automatically shutting down.
I then charged the Retina MacBook Pro without powering it up; this process will reset the small processor that tracks a MacBook Pro’s battery charge status, which can help OS X report more accurate runtime estimates. After fully recharging, rebooting, and making sure all the same apps were running, I again disconnected the power. The Retina MacBook Pro ran for 6 hours and 58 minutes.
That’s a significant improvement in runtime, merely from installing a software update. Nonetheless, I still wasn’t able to meet the same 8-hour performance I had while running Lion. Similar tests run on a 2011 MacBook Pro by our friends at The Mac Observer showed similar results; battery life improved significantly over 10.8.0, but still fell short of performance under 10.7.4.
We feel confident that battery life should significantly improve for most users who saw problems when running the initial version of Mountain Lion. Still, we have received a number of scattered reports from readers that say their battery problems haven’t improved significantly. One user even told Ars that battery life seemed to be worse, so the exact origin of the problem remains unclear.
What is clear from our tests is that whatever fixes Apple added to 10.8.1—whether they were battery-specific or not—resulted in our laptops producing battery life much closer to what we expect. For the time being, though, Apple isn’t commenting on the battery issues. Perhaps the company hasn’t identified any verifiable contributing factors—there could be more than one single glitch given the range of reported hardware and software configurations of those claiming to have problems.
There’s still a chance that further improvements could be coming down the pipeline, though. Apple has already released the first developer preview of OS X 10.8.2, just shortly after pushing out the official 10.8.1 update to the public on Thursday. We haven’t heard any reports of additional battery life improvements just yet, but we will definitely continue to monitor the situation.
If you have been able to verify any significant improvement or degradation in battery life after installing 10.8.1, let us know in the comments.
Listing image by iFixit
macOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. Get even more transparency around your privacy.Chances are, your Mac can run macOS Big Sur
The following models are supported:
*MacBook (2015 or later)
*MacBook Air (2013 or later)
*MacBook Pro (Late 2013 or later)
*Mac mini (2014 or later)
*iMac (2014 or later)
*iMac Pro (2017 or later)
*Mac Pro (2013 or later)
To see which model you have, click the Apple icon in your menu bar and choose About This Mac.Make sure you’re ready to upgrade.
Before you upgrade, we recommend that you back up your Mac. If your Mac is running OS X Mavericks 10.9 or later, you can upgrade directly to macOS Big Sur. You’ll need the following:
*OS X 10.9 or later
*4GB of memory
*35.5GB available storage on macOS Sierra or later*
*Some features require an Apple ID; terms apply.
*Some features require a compatible internet service provider; fees may apply.Upgrading is free and easyUpgrading from macOS Catalina 10.15 or Mojave 10.14?
Go to Software Update in System Preferences to find macOS Big Sur. Click Upgrade Now and follow the onscreen instructions.Upgrading from an older version of macOS?
If you’re running any release from macOS 10.13 to 10.9, you can upgrade to macOS Big Sur from the App Store. If you’re running Mountain Lion 10.8, you will need to upgrade to El Capitan 10.11 first.
If you don’t have broadband access, you can upgrade your Mac at any Apple Store.
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*4GB of memory
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For details about your Mac model, click the Apple icon at the top left of your screen and choose About This Mac. These Mac models are compatible with macOS Big Sur:
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*Mac mini (2014 or later)
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Requires a broadband internet connection and microphone (built-in or external). Hey Siri
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High dynamic range (HDR) video playback is supported by the following Mac models:
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Dolby Atmos soundtrack playback is supported by the following Mac models:
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Supported by the following Mac models:
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Supported by all iPad models with Apple Pencil support:
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