OS X 10.8 "Mountain Lion"

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79
votes
2answers
200k views

Creating A Bootable USB Of Windows 8.1 On OS X?

Reasons for wanting create such a usb include: PC is unbootable and you want to prepare a bootable USB using the ISO file that you have on your external hard drive. to install Windows 8.1 on Mac ...
21
votes
4answers
176k views

Roll back from OS X Mavericks ( or any newer OS) to Mountain Lion

I installed the developer preview of OS X Mavericks, & too many things broke. I can't stay on it & need to roll back to Mountain Lion. Any ways of doing that? Please help! I originally ...
162
votes
8answers
85k views

How can I trigger a Notification Center notification from an AppleScript or shell script?

I'd love to be able to take advantage of 10.8's Notification Center features in AppleScripts and shell scripts I write. Is there a built-in command or a third-party library I can use from either an ...
4
votes
4answers
8k views

Messages won't let me sign in to iMessage

On my OSX laptop (10.8.5) I've recently been unable to sign into iMessage. By recently I mean approximately a week. I've not done any updates that I recall lately. Coworkers are able to send me ...
35
votes
6answers
20k views

How can I modify the list of Applications under 'Open With…'?

I recently went to open an audio file, and wanted to open it in an editor instead of a player. I right-clicked it, hovered over 'Open With...' and was met with a very unsightly list. I have seen a ...
20
votes
6answers
9k views

How can I expand the number of special characters I can type using my keyboard?

I am aware that when I press ⌥ or ⇧⌥ on my Mac, I can type a variety of special characters. I also know that I can insert special characters using the character palette. Is there a way to expand the ...
18
votes
4answers
110k views

How to fix broken EFI partition?

I have an iMac running OSX Lion. I also installed bootcamp and Windows 7. During the install of Windows 7 I wasn't paying complete attention and deleted and formatted the EFI partition. I didn't ...
27
votes
8answers
37k views

Can I disable auto-correction of a single word on OS X?

I'm running into an annoying issue with OS X's automatic spelling correction where the word nala gets automatically corrected to napa. I've tried adding nala to my custom dictionary under ...
12
votes
2answers
14k views

How do you get system diagnostic files from OS X?

I am trying to debug a crashed (or hanging) app. How do I get the diagnostic files from the crash?
10
votes
2answers
15k views

MacBook Pro with Mountain Lion freezes frequently (full screen Flash in Chrome, Messages, HTC on USB)

Problems following an upgrade to Mountain Lion on a 13-inch, Early 2011 MacBook Pro (MacBookPro8,1 with Intel HD Graphics 3000). With Google Chrome, I was watching YouTube video fullscreen – Flash ...
17
votes
6answers
98k views

How to mimic Safari 5 Activity window with Mountain Lion, to save FLV video files?

With Safari 5 in Lion, I used the Activity window to save video files. Safari 6 has no Activity window. With Mountain Lion, what is the best way to replicate what I could do before?
18
votes
3answers
29k views

What steps are needed to create a new user from the command line?

What commands (or script) can create a fully functional user account on Mountain Lion, running only from the command line via terminal or ssh. It looks like an existing pair of answers might work, ...
10
votes
2answers
6k views

Enabling Apache in Mac OS X Mountaion Lion

This is my first Mac, it's Mountain Lion, and I know how to enable Apache through Preferences -> Sharing -> Web Sharing, but how the hell do I do it in Mountain Lion? I find that that button no ...
7
votes
2answers
13k views

Hide a running app from Dock?

Is there a way I can hide a running app's dock icon Mac OS X?
5
votes
7answers
18k views

How to Screen Sharing / VNC to an iMac without waking the display?

I have an iMac mid 2011 at home. When I was not home, I may need to access my mac with Screen Sharing. However the iMac display will turn itself on when I connect via Screen Sharing. The problem is I ...
4
votes
1answer
5k views

Turn off internal display without closing lid

I learned that a MacBook Air's built-in screen turns off when I close the lid so I can continue working on an external display set to be primary. But the MacBook Air has a heat system that requires it ...
84
votes
53answers
14k views

What un(der)-documented features have you stumbled upon in Mountain Lion?

This question serves to share and collect the enhancements which are not documented by Apple, or documented poorly. Please justify your answer; if it is something that is well documented by Apple and ...
28
votes
5answers
54k views

How can I switch between the two Java versions in Mountain Lion now that Java Preferences is gone?

I have two versions of Java installed with Mountain Lion: Apple's Java 6 Update 37 (Java for OS X 2012-006) Oracle's Java 7. The update from Apple removes Java Preferences. In another question ...
37
votes
5answers
8k views

Is there a way to access a Mac's geolocation from terminal?

Some GUI apps use OS X location services, but I want to retrieve a Mac's physical location from the command line. This could be useful for running scripts, switching settings etc. The mechanism should ...
20
votes
9answers
41k views

How to view logs in Airport Utility v6, or install 5.6 in Mountain Lion?

So I just upgraded to Mountain Lion, and I'm watching some Netflix over my Apple TV, when it stops streaming and tells me it's not connected to the network any more. Sure enough, my Air has also lost ...
53
votes
7answers
38k views

I am missing the option to see the remaining battery life as time in the menubar?

In previous versions of OS X the battery indicator in the menubar included options to show the remaining battery life as percentage or time (or nothing). In Mountain Lion, there's only an option to ...
25
votes
7answers
33k views

What Is the Keyboard Shortcut for Sleep Display Without Eject Key?

I read that if you want to put your display into sleep the keyboard shortcut is Control ⌃+Shift ⇧+Eject ⏏, but what is it in Mountain Lion or Lion using a retina MacBook Pro or MacBook Air without an ...
14
votes
2answers
9k views

Why does my Mac's list of “Open with” applications start listing the apps twice and sometimes three times?

When I right-click on a file on my Mac OS desktop and then in the contextual menu, I move to the "Open with...", the list of potential applications to "open with" has applications listed multiple ...
16
votes
4answers
20k views

How to re-download Lion from Mountain Lion

I'm currently running Mountain Lion, but I'd like to redownload Lion (to create a bootable install drive). However, when I click the download button in the App Store, I receive a message telling me my ...
16
votes
2answers
8k views

Mountain Lion sleeps too aggressively

For me, Mountain Lion always seems to sleep whenever there is no user action, even when the computer is still doing something. In my case it always sleeps in the middle of running a batch operation in ...
10
votes
4answers
3k views

iTunes track notifications for Mountain Lion

In OS X Lion there was the preference (via a Terminal command) to enable iTunes track notifications that were displayed as a popup in the dock. So far it seems as though Mountain Lion does not allow ...
6
votes
1answer
13k views

Disable Stand By Mode on Retina MacBook Pro?

I learned that the retina MacBook Pro has a Deep Sleep Mode that is initiated when left idle for a long time. This, however, causes my laptop to take about 3-5 seconds to wake up after it sleeps, such ...
5
votes
3answers
3k views

How can I export text substitutions from Lion for import into Mountain Lion

I am trying to migrate to a brand new install of Mountain Lion. I am trying to migrate select data from my old Lion install. Does anybody know where the text replacement definitions in System ...
9
votes
5answers
2k views

Will I still be able to buy and install Lion after Mountain Lion is released?

I own an Early 2008, white MacBook (MB403LL/A) which still has Snow Leopard, 10.6.8, installed. My understanding is Mountain Lion will not support my MacBook. If this turns out to be true then I ...
23
votes
2answers
8k views

How to fix Safari 6 on Mountain Lion that doesn't show the full URL in the address bar unless I click it?

For instance, Ask Question page URL on this site is shown as apple.stackexchange.com, but when I focus on address bar, it becomes apple.stackexchange.com/questions/ask. I tried resetting and ...
7
votes
3answers
7k views

Change file association in terminal?

Is there a method for associating file types with applications via terminal? I thought ~/Library/Preferences/com.apple.launchservices.plist might do it, and I also have seen: Why is a command line ...
6
votes
1answer
911 views

Emacsify OSX throughout: word-forward (⌥ + F) and word-backward (⌥ + B) instead of 'special characters'?

Yes, the OSX already supports ⌥+← and ⌥+→ for moving the cursor word-backward and word-forward, but reaching for arrow keys is annoying. So, why not rather have ⌥+B and ⌥+F do this? I mean, not once ...
20
votes
4answers
22k views

what is com.apple.coresymbolicationd in caches?

Doing some cleanup on my Macbook Air with 128 SSD looking for big files to reduce space used. I found something named com.apple.coresymbolicationd that is 1GB in the library/caches folder I don't ...
11
votes
4answers
14k views

Eclipse 4.2 on Mountain Lion: gatekeeper rejects as unidentified developer?

Just updated the mountain lion, and download the latest Eclipse 4.2 to upgrade the old one. However when opening the application, it shows that it is from an unidentified developer and the gatekeeper ...
3
votes
1answer
2k views

Large difference in reported free disk space

I have a strange discrepancy in the amount of free disk space that's being reported. The finder says: My iStat Menus says: Which is the same as df -h reports: remco@Prosperpine ~ $ df -h ...
39
votes
5answers
22k views

Where are system environment variables set in Mountain Lion?

In Lion (and previous releases) it was in .MacOSX/environment.plist. After upgrading to 10.8, the file is still there, but the variables aren’t taking. I’ve also tried adding them to ...
33
votes
2answers
50k views

How to wipe huge .MobileBackups folder?

I found my .MobileBackups folder quite large, it weights 160 Gi. Shouldn't the .MobileBsckups folder be wiped after the TM 'backup session'? Since I have backup done on my external drive how can I ...
14
votes
6answers
56k views

How to save chat logs in Messages for Mountain Lion?

I always used to save my Chat logs because I use IM in the professional environment. Now I find that I can’t save chat logs anymore. That option is gone. Is there any workaround or hidden preference ...
15
votes
1answer
14k views

Do /etc/resolver/ files work in Mountain Lion for DNS resolution?

Can anyone tell me if adding a file under /etc/resolver will work for DNS resolution using a DNS server other than what is handed out via DHCP ? My issue is that I want to use OpenDNS for a clients ...
15
votes
3answers
13k views

How to hide notification center button in Mountain Lion?

I am using Mountain Lion. The only advantage (for me) over the gesture is that Option + clicking the button enables/disables showing alerts and banners (toggles the switch in the notifications ...
12
votes
3answers
27k views

Reinstall Mac OS X Mountain Lion before selling a Mac

I want to sell my laptop (Macbook Pro late 2011). I have erased my disk drive but it seems that I cannot reinstall Mac OS without an Apple ID. At the origin my mac was shipped with Lion, I have ...
10
votes
1answer
958 views

How can I disable the delay + minimum distance when deleting icons from the Dock by dragging in Mountain Lion?

As you all know, Dock icons can be removed by simply clicking them and dragging them out of the Dock. As soon as the “poof” animation appears, you can release the mouse button to remove the icon. ...
10
votes
8answers
42k views

Mountain Lion 10.8.2, Java Preferences has disappeared

I just installed the latest Java update from apple (Java for OS X 2012-006) and I was looking to have a look at what's going on with my java(s) with Java Preferences app (which used to live in ...
6
votes
3answers
10k views

After Upgrade to Mountain Lion I get blurry fonts

Since the upgrade to Mountain Lion, I get blurry fonts system-wide. It doesn't matter where it is: I've seen them on the log-in screen, Safari, Mail, Xcode, and Skype. Every font is very blurry. It ...
8
votes
1answer
7k views

Testing a MacBook Pro's RAM upgrade

What are the best possible RAM tests that can be run on a MacBook Pro (Early 2011 running Mountain Lion) after upgrading RAM from 4 GB to 16 GB? I see there a quite a few tools out there and the ...
6
votes
6answers
8k views

How to open or toggle Keyboard Viewer by a keyboard shortcut?

I changed the shortcut to Command ⌘ + X to change the language of the keyboard. However I would like to display the Keyboard Viewer using a shortcut as well. Is there a way to display the Keyboard ...
9
votes
1answer
26k views

Create new partition in unallocated space with diskutil

I have deleted the first partition on my external HD such that it now has 100GB of free space at the beginning of the partition. I'd like to reclaim that space, but Disk Utility doesn't let me create ...
12
votes
8answers
7k views

Does Notification Center have keyboard shortcuts?

Are there any keyboard shortcuts for controlling Notification Center on OS X Mountain Lion? Of particular interest is a shortcut equivalent of the Click to Tweet button that appears at the top of ...
3
votes
1answer
4k views

Mac virtual memory: how to make OS X create swap (page) files as freely with a normal boot as it does with a safe boot (swapfile1 etc)

Background When my MacBookPro5,2 with 8 GB memory boots in safe mode I see that the operating system causes dynamic_pager(8) to create swap files in a way that's relatively unrestrained. In the file ...
7
votes
4answers
4k views

How to revert to Lion from Mountain Lion?

I'm running a Mid-2011 Macbook Air, my first Mac. When I bought it, it had Lion pre-installed. Yesterday I picked up an external hard drive, and made my first Time Machine backup. In the next few ...