OS X Mountain Lion
OS X Mountain Lion
10.8.5

3.8

OS X Mountain Lion free download for Mac

OS X Mountain Lion

10.8.5
13 September 2013

The final update for OS X 10.8.

Overview

Apple OS X Mountain Lion is the latest release of the world's most advanced desktop operating system. Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. With the new Messages app, you can send text, photos, videos, contacts, Web links, and documents to anyone using another Mac, iPhone, iPad, or iPod touch -- you can even start a conversation on one device and continue it on another. The new Share button makes it easy to share files, Web pages, photos, and videos, as well as tweet right from the app you are using. With the Reminders app, you can create to-do lists and alerts that appear in the new Notification Center. With Notes, you can write down all your ideas and even speak your words with voice dictation. Play head to head games on your Mac with friends on their Macs or iOS devices with Game Center. And with iCloud built-in, it's simple to keep all your mail, contacts, calendars, reminders, notes, to-do lists, music, photos, iWork files, PDFs, and more up to date across all your devices.

Messages

  • Send messages from your Mac to friends with an iPhone, iPad, or Mac.
  • With iMessage, you can start a conversation on your Mac and pick it up on your iPhone or iPad.
  • Messages also supports traditional instant messaging services like AIM, Yahoo! Google Talk and Jabber.
iCloud
  • Documents in the Cloud lets you create and edit your documents on your Mac, iPhone, and iPad.
  • The new Reminders app makes managing tasks easy. Jot down your thoughts with the new Notes app. And iCloud keeps your Reminders and Notes up to date across all your devices.
Safari
  • Type both searches and Web addresses in the new Smart Search Field.
  • Pinch to see tabs with Tab View and swipe to switch between them.
  • iCloud Tabs makes the last websites you looked at accessible on your iPhone, iPad, and Mac.*
Notification Center
  • New notifications appear in the top right corner of your screen.
  • Open Notification Center from anywhere in OS X to see recent notifications.
  • Configure your notifications to receive just the ones you want.
Sharing
  • Share links, photos, videos, and other files right from the app you're in.
  • Share with Mail, Messages, and AirDrop.
  • Sign in to Twitter, Flickr, and Vimeo once to start sharing.
  • Tweet right from your apps with the Tweet sheet.
Game Center
  • Play live multiplayer and turn-based games against friends on iPhone, iPad, iPod touch, or Mac.
  • Log in to the Game Center app to see friends in your gaming network.
  • Check out leaderboards and achievements.
  • See what games your friends play and track your progress against them.
Other great Mountain Lion features
  • Dictation lets you talk anywhere you can type--no setup or training required.
  • AirPlay Mirroring shows your Mac screen on your HDTV with Apple TV.
  • Power Nap keeps your Mac up to date while it sleeps so it's instantly ready to go.
  • Gatekeeper makes it safer to download apps from the Internet by giving you control over which apps can be installed on your Mac.
  • New features for Chinese users include improved text input, leading search engine Baidu as an option in Safari, sharing to microblogging service Sina Weibo and video websites Youku and Tudou, eight new fonts, and a new Chinese dictionary.

What's new in OS X Mountain Lion

Version 10.8.5:
  • Fixes an issue that may prevent Mail from displaying messages
  • Improves AFP file transfer performance over 802.11ac Wi-Fi
  • Resolves an issue that may prevent a screen saver from starting automatically
  • Improves Xsan reliability
  • Improves reliability when transferring large files over Ethernet
  • Improves performance when authenticating to an Open Directory server
  • Addresses an issue that prevented a smart card from unlocking preference panes in System Preferences
  • Contains the improvements included in MacBook Air (Mid 2013) Software Update 1.0

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201 OS X Mountain Lion Reviews

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Rate this app:

Mysticalos
19 April 2012

Most helpful

Apple isn't taking pre sales yet, I'm not sure why MU is posting developer seeds like this, and not even labeling the main title as a beta (but instead making it sub text). this is misleading, someone might see the 99 dollar thing and think they are buying a retail lion that's expensive, and not and ADC membership and access to a beta with a ton of known issues still, not intended for consumer use. By no means was i confused on what it is, i always read the subtext and keep up with ADC anyways, but just stating as someone who also does mac tech support, the average user isn't going to read the subtext. heck, 23% of people infected with flashback haven't even run software update yet, certainly there are going to be a few mislead by this being on macupdate.
Like (17)
Version 10.8
LeeL7158
17 December 2013
One more thing Mountain Lion 10.8.5(not earlier versions) is the Best.. I used Ethernet for download.. and yes it took a while.. but worth it. If you're not sure, then Don't! I upgraded from SnowLeopard 10.6.8.. using my Time machine from 10.6.8.. keeping both my Pic, Docs, and Most Apps from SnowLeopard.. LL
Like
Version 10.8.5
LeeL7158
17 December 2013
Mountain Lion v10.8.5, has got to be the BEST since Snow Leopard.. I'm very Pleased with most everything about this OS! YES, the download is worth every penny ! the download has a habit of stalling in App Store.. I Hit ComMand-R.. and it continued fine. it took about 9 1/2 hours, but that's just me. Thank You apple!
Like
Version 10.8.5
Penguirl
15 October 2013
Oveall I think that Cougar has a lot of nice touches. I still miss Rosetta, and the drab Finder sidebar is atrocious (I find it harder to spot what I'm looking for than SL's sidebar) but overall it's a lot better than I expected. One thing I sorely miss, besides Rosetta, is the zero-out option in Disk Utility. With this option gone how are we supposed to write out bad sectors now?
Like
Version 10.8.5
Brooklyn-Al
15 September 2013
The combo updater on the link provided below has a file size of ~ 871mb verses 831mb from the apple support website (http://support.apple.com/kb/DL1676). Why the file size difference?
Like (1)
Version 10.8.5
3 answer(s)
Jess-MacUpdate
Jess-MacUpdate
15 September 2013
Hey, Brooklyn_Al! Glad you asked about the file-size difference, 'cause it's one of my pet peeves. :-) Back around the age of OS X 10.6, Apple decided that we needed to use decimal kilobytes and megabytes and gigabytes (oh, my!) rather than the mathematically correct binary versions of same. That means that, in Apple's wisdom, on our systems anyway, a kilobyte is 1000 bytes rather than 1024 bytes (2^10 [two to the tenth power] = 1024). As you can imagine, as numbers grow, the difference grows, um, well, logarithmically. The download, whose uncontested size is 871,498,431 bytes, looks like 871,498,431/1,000,000 is 871.498431 MB or 871.5 MB when it gets to our machines, but 871,498,431/(2^20) is 831.1256704 MB or 831.13 MB is the size in binary, and that's the way Apple posts it on their servers. So, we apologize for the confusion. And I apologize for the math class, but I had to get it out of my system. :-D
Like (3)
Brooklyn-Al
Brooklyn-Al
15 September 2013
Jess thanks for the explanation---very helpful and informative!
Like (1)
Prince-Isaac
Prince-Isaac
16 September 2013
@MacUpdate-Jess No problems with the math lesson. I'll wager that 98% of the people who are basically computer-literate (myself included) either weren't aware of the change or simply forget about difference in notation. Thanks for getting this mini-lecture out of your system.
Like (1)
MacUpdate-Lon
14 September 2013
Well, I took the plunge and upgraded my late 2011 MBP running OS X 10.7.5 to OS X 10.8.5. The App Store experience was not good as far as downloading goes, the download quit several times and an alert window popped up that gave an option to "retry". It took the better part of a day to get this beast downloaded (yes, I have broadband). As for the OS itself, I'm not so crazy about it. More bells and whistles, seems to me.
Like (2)
Version 10.8.5
3 answer(s)
DocOnMac
DocOnMac
16 September 2013
Did you use an Ethernet or Wi-Fi connection for the download? Apple are very specific in recommending ethernet over Wi-Fi as the former is much more stable. I have never had any drop outs since adopting this advice from AppleCare
Like (1)
MacUpdate-Lon
MacUpdate-Lon
19 September 2013
I did indeed use Wi-Fi to download it, was unaware of Apple's recommendation to use Ethernet. Thanks for the tip. The OS has given me no problems. I'm still not excited about it and don't like that it eats a lot more RAM. Oh well, every major Mac OS X update has eaten more RAM, so no surprise.
Like
MacUpdate-Lon
MacUpdate-Lon
01 October 2013
After some use, I have to say that OS X 10.8.5 shouldn't be installed on Macs with less than 8 GB of RAM. I've got 4 GB RAM and I get swapfiles galore after a relatively short time of use, and I don't use any monster apps like Photoshop.
Like
Gregm
13 September 2013
Lost all of my iCloud services mail failed, calendar & address book would not sync, -- even trying to log on via browser failed. Solution was to log off of iCloud via System Preferences>>Internet and Wireless>> iCloud> sign out --- then sign back in (being mindful of the service checkmarks)
Like
Version 10.8.5
Mcr
13 September 2013
My pointers for OS system upgrades. These should be fairly obvious and logical, but surprisingly I see and hear of people who will try to run an upgrade, with 5 apps running, downloading files, and so on, then wonder/complain that the upgrade 'screwed up' my system. 1. Perform Verify Disk AND Repair Permissions BEFORE upgrade. 2. Boot from another partition or drive, other than the one being upgraded. This ensure the partition to be updated is completely accessible and no files are open or in use. In this day and age of inexpensive supersize hard drives, there's no reason not to have an extra partition to boot from for situations like this. It doesn't take much space. A bare bones install of Mountain Lion will fit on a 10 GB partition. What's 10GB on a 500 GB or 1 TB drive? Disconnect all other external drives/unmount other partitions, other than one you booted from and the one to be updated. 3. If unable to boot from another partition or drive (i.e. you are updating the same installation you booted from), then before starting the installation, shut down all apps, including any of the apps that run on the menu bar if you can. (us old Windows people will remember the old saying about quitting all TSR - Terminate and Stay Resident- programs before doing any Windows updates, this is kind of the same thing, turn off all those third party apps running in the background). Go have some coffee while the upgrade is in progress, really you don't need to be working at the same time, those 15 minutes are small compared to the time you will waste if the install goes bad. 4. Perform Verify Disk AND Repair Permissions AGAIN AFTER the upgrade finishes and the system reboots. 5. I run the Combo updater, even if I'm just upgrading from one point release to another. For newbies, Apple releases OS updates in two forms, 1) a smaller update that updates from the immediate prior release, like if you have 10.8.4 installed and want to upgrade to 10.8.5, and 2) a combo updater that updates any prior version. For example the 10.8.5 combo updater will update any version from 10.8.0, .1 , .2, .3 and .4. Why run the combo, even if just upgrading from the previous point release? There have been times when Apple has forgotten files in the point upgrade, and the point upgrade is based on just covering the delta between the two points releases. The combo makes no such assumptions and includes all files changed since the dot zero release, and during the upgrade, a simple date/time and version check tells the updater whether to copy over or not. When you consider that OS X has HUNDREDS of THOUSANDS of files, the possibility of human error in packaging when applying cumulative point release updates on top of each other is likely higher, versus a combo which makes no assumptions about what got changed in between. I do not have any proof of that, this is a personal opinion, I could be wrong, but in my experience I have had good results always using the combo. Besides if you read any of the Mac publications and tech pundits, nearly all of them recommend using the combo as well. If you have multiple Macs, or work in a multi Mac shop, it's also a lot simpler to keep one combo updater on hand, than multiple point updaters. Hopefully, if you follow these steps it will minimize the possibility of those spurious, hard to pin down, system hick ups that are often reported here. Lastly, laptop users with smaller drives that feel they can't afford to set aside 10 GB for a boot partition, invest in an external drive, it's well worth it. If you have a Time Machine drive, you can even partition off 10GB on that. Good Luck!
Like (10)
Version 10.8.5
6 answer(s)
Prince-Isaac
Prince-Isaac
13 September 2013
@mcr: It's astounding that a couple of people have given you "frownies" for this great set of upgrade tips. What's not to like about what you wrote? I'm an old-time Mac user and remember these tips being written in stone in the System 6 and 7 days, with additional steps once the Mac was unix-based. Thanks for taking the time to put these in the comments here.
Like (1)
Anon-Bud
Anon-Bud
14 September 2013
FWIW: Maybe I'm just lucky, but I quit doing all this sort of thing with each incremental update. I've not had any hint of a problem with software updates and things run as smoothly as can be. I am not suggesting that folks don't go through what you've listed here. All good stuff. It's just that I only do this with major updates. BTW I'm running on an early spring 2009 17-inch Macbook Pro.
Like
DocOnMac
DocOnMac
16 September 2013
I boot into Recovery Partition, run Disk Utility Disk First Aid and then boot into Safe Mode to install either the Combo or the smaller Update. As mentioned in an earlier post, Apple recommend an ethernet over Wi-Fi connection for the large 4+ GB download. Since adopting this method I have had no problems at all. I prefer the Combo updater to use for all my Macs.
Like
Tim27
Tim27
19 September 2013
While this is a good list of what to do for OS updates, it clearly outlines the major problem with all operating systems today and for the past 30 years. Humans that program these OS's don't think about the end user. Jobs did to an extent, but still we as customers are left with trying to do all these steps manually before a software update that Apple tells us is available and has a "Click Here to Update" button flashing us in the face. I am unsure why it would be so incredibly difficult for programmers to automatically do all of these steps before installing an update. And while I think about it, WHY should we have to do these steps anyway? You would think that by the year 2014 computers could optimize their own hard drives and rebuild their own permissions when they become frazzled. And speaking of permissions, why do I need to rebuild permissions when I am the ONLY person using my computer? Why would permissions even get screwed up? All of this comes down to making the best possible user experience. To date, no computer company has done it. Some day some company will. I had high hopes for BeOS when that was in development in the 90s, but then that got canned.
Like
Prince-Isaac
Prince-Isaac
19 September 2013
@Tim27: You are absolutely correct on all points. Upgrading an OS should not have to entail so many steps of caution, much of which smacks of ritual and voodoo based on nothing more than memories of past horrifying experiences. An upgrade, not matter what its magnitude is, should consist of the user answering one question: "Do you want to install the upgrade?" Answering "yes" directs the installer to do everything from repairing permissions, cleaning out the .trashes and other detritus, backing up to whatever medium you've selected as your backup, an fsck and other CLI diagnostic/repairs, reset PRAM and whatever else, and then put everything possible into a quiescent state, and install the upgrade. And flash a message every so often that it's time to stop staring at the progress bar and get a life, say in the nearest coffee shop. Did someone mention the dark arts of chaining SCSI devices and terminators? Something i'd really like to forget.
Like
Prince-Isaac
Prince-Isaac
19 September 2013
Somewhat off topic but since we're discussing upgrading, what the heck! I plan on upgrading to Mavericks when it is released. This will be the first upgrade on my current Mac (late 2012 Mini). I usually upgrade by backing up (with SuperDuper or CCC), then booting into the backup, then erasing my normal boot volume, and installing clean with migration. However, this time I'm faced with a different setup: My normal boot volume is a 240MB SSD combined with a 500GB HDD, "combined" as in they are a Fusion Drive (not a hybrid). So I'm curious if anyone here has experience cleaning off a Fusion setup and then installing the OS clean? What are the things to watch out for? Thanks! -PI
Like
freddyfrog
13 September 2013
Apple need to fix Software Update. Every time I try to use it to update OSX it grinds slowly away for a short while and then gives up the ghost and declares a fault. I suspect that the Software Updater cannot handle the load on it. I find it is far faster to download updaters for OSX directly from the Apple download site.
Like (1)
Version 10.8.5
RTouris
13 September 2013
Is it **just** me or is the Finder window zoom-to-fit function **still** broken in 10.8.5? I've been sending out feedback reports to Apple with regards to this particular issue (i.e. Finder windows DO NOT ZOOM properly when viewing contents in list-mode cmd-2) ever since 10.7, but oh my..this is getting lots of Apple M$-like love for the last couple of years now :/Other than that, pretty stable and all.
Like
Version 10.8.5
anonymous-snipe-287
13 September 2013
Smooth upgrade, no apparent issues on rMBP (2012).
Like (1)
Version 10.8.5