top of page

Professional Group

Public·25 members
Laurel Zuev
Laurel Zuev

Download Mac Os Mountain Lion Installer

In a friend's Mac, download the desired OS installer (High Sierra in my case for my MacBook Pro Late 2011 - google "How to Download a Full macOS High Sierra Installer App") and create the bootable USB, HDD or even SSD with Disk Creator (2 steps very friendly freeware tool - google "disk creator").

Download Mac Os Mountain Lion Installer

If you have access to a second Mac you should be able to create a bootable OS installer following the guide and OS download I posted above. Make sure you format the USB thumb drive to GUID Journaled file system before you start.

Speaking of Terminal, Armin Briegel has written on his Scripting OS X blog that the softwareupdate command has a new option in Catalina that lets you download the full installer for a specific version of macOS. This seems to work with versions of 10.14 Mojave and 10.13 High Sierra, but nothing older.

Is there a way to see when the signing certificates expire? I thought I knew how, but when I use that procedure it shows the Mojave and Catalina installers I just downloaded expiring in April of 2021 (which is better than last Thursday, but still only 1.5 years away.)

When I try to get the High Sierra or Mojave installers, the link takes me to a page where the link only takes me to the app store where those installers do not appear anywhere that I can see. The links for El Capitan, Sierra, and Yosemite got me to a page where I could download a dmg so those seem to work.

The day the TidBITS article appeared I tried downloading the installers and had problems downloading the ones from the Mac App Store. I reported the screwup of the missing archived macOS installers to a senior AppleCare advisor. Sure enough, he, too could not download them from the Mac App Store. He agreed it was screwed up and reported it to engineering.

I got them all to download, except High Sierra. On the app store page for HS I got an Open button, even though I had unmounted my archive volume that contained the HS installer. So I used the macOS High Sierra Patcher tool as you directed, getting the installer download instruction from the Tools menu. Great app. High Sierra was them downloaded to my specified location. So now I have updated apps for all the macOS X installers in your list. However, this was the only one, besides Mojave, that downloaded the app. The other links downloaded dmg copies, which do not contain the usual installer app. So I retained the apps for Mojave, El Capitan and Yosemite.

That just indicates that you still have an older copy of the installer squirreled away somewhere on your boot drive. The App Store is very good at knowing this, so you might want to spend a bit of time trying to locate and trash it. That may well be why the one you downloaded was then moved to trash.

Apple has no advice on how to do this, nor have I seen any here or elsewhere. Pre-Sierra systems cannot be re-downloaded from the App Store with the new certificate. (But I got a full installer.) Maybe you managed to create a bootable installer yourself from the new El Capitan?

Anyone having luck with downloading the full 6GB Mojave installer from the App Store? On one machine I only get a 22MB stub installer. On another machine I was able to download the full 6GB version but the installer app reports to be damaged. I re-downloaded it a few more times with the same results.

I had exactly the same thing happen to me despite downloading a brand new Mojave installer. Then I realized, the problem is launching the installer off an external HDD. As soon as I moved it back onto my internal boot SSD, it launched just fine.

I've just tried it on my computer again and I get the same message as you (though I can create an El Capitan bootable installer, meaning the problem is really the Mountain Lion installer). I even re-downloaded the Mountain Lion installer. I remember vaguely that earlier this year, Apple had a couple of issues with expired certificates and that it was recommended/required to re-download the OS X installers and possibly other apps. I know I did so and the time stamps on the installers on my computer also show this.

I thought about downloading Yosemite or Mavericks and then trying to run the Mountain Lion installer but as you mentioned, I went directly from SL to EL Cap so I do not have the option of downloading neither Yosemite or Maverick from the app store as I never downloaded them when they were the current OS on Mac's. Any suggestions on how to download Yosemite or Maverick would therefore be very helpful. (Not sure BT is the way to go even if I would do a clean install of ML or SL straight away after installation as I don't know if it's safe or not?)

My method relies on a command line executable that is part of the macOS/OS X installer .app package that you get when you download the OS installer from the Mac App Store. To apply it, you thus need to download it. If you haven't downloaded it in the past, the only thing available would be the High Sierra installer. If you downloaded installers for other major OS versions, they should be available for download in the Purchase section of the Mac App Store app.

- Follow this step if you're setting up iAtkos on a Mac or existing Hackintosh. Plug your USB drive into Mac OS X, and open Disk Utility (located in the Utilities folder in the Applications folder). Select the USB drive in the sidebar of Disk Utility, go to the "Partition" tab of Disk Utility, and create a new partition layout with 1 partition. Set the format to "Mac OS Extended (Journaled)". Name the new partition whatever you want. Click the "Options" button before applying your new partition layout. It should be set to "Master Boot Record" by default. Keep it that way. Then click "Apply" (this step is shown in the first picture). - Open your downloaded iAtkos disk image by double-clicking it; this file will probably be named "iATKOS_ML2.dmg". Then, start Carbon Copy Cloner, and set the iAtkos disk image as the "Source" and your USB drive as the "Destination". In the second picture, my USB drive is named "Whatever". This will write all of the contents of the iAtkos disk image onto your USB drive. This will take 15 minutes to an hour, depending on the quality of your USB drive (this step is shown in the second picture). - Once Carbon Copy Cloner is done, your USB drive will contain a fully-functional OS X Mountain Lion installer. However, it's still unbootable on PCs. To fix this, open Multibeast and select the USB drive as the installation location. Select Drivers & Bootloaders -> Bootloaders -> Chimera, and run the Multibeast installer (this step is shown in the third picture). NOTE: If Multibeast doesn't give you the chance to choose the installation location, click past the pages in Multibeast, until you reach the page with the "Change Install Location" button.

- Follow this step if you're setting up iAtkos on Windows. Insert your dual-layer DVD into Windows, and open TransMac. Click File -> Open Disk Image. In the Windows Explorer window that pops up, select your downloaded iAtkos disk image; this file will probably be named "iATKOS_ML2.dmg" (this step is shown in the first picture). - Your iAtkos disk image will pop up in the left sidebar of the TransMac window. Right-click on it, and click "Burn to CD/DVD". Then burn the disk image (this step is shown in the second picture). - This process may take up to an hour (or more, depending on the speed of your DVD burner). Once TransMac finishes, you will have a fully bootable DVD version of the iAtkos Mountain Lion installer.

All MOTU installers for Mac OS X available at (latest versions only) are properly signed for Mac OS X 10.8's GateKeeper feature, so you can leave GateKeeper enabled when installing the latest MOTU software or hardware drivers.

Apple's Lion licensing is more than liberal. Individuals can legally install one purchased copy of Lion on all of the Macs they own or control. It's strictly honor system -- no install keys or online activation. You can buy Lion once and download it as often as needed from any Mac. The Lion installer app can be copied from Mac to Mac using your LAN or a flash drive. Just drop the installer into the Applications folder and double-click to install the OS.

I got this resolved finally. I used RVM to uninstall ruby and re-install ruby version 1.9.3. This allowed me to run 'bundle install' without a problem. I checked that all gems where loaded (gem list). However my rails application could not locate the postgres socket file at this point. The same problem is detailed here. Rather than locating the postgresql.conf file, changing permissions on it, and editing it I just uninstalled my current version of Postgres and downloaded the latest One-Click installer from PostGres. When I ran the installer again it detected the other PostGres installation and updated it. This updated the configurations for me and all is well again.

Seg3D 2.0 currently builds under OS X 10.5 and higher. The CMake system was setup to run from the command line using gcc and make, or to use XCode. Both versions of the build system should work. To build Seg3D 2.0 CMake ( version 2.8 or higher ) is required as well as svn ( subversion, version 1.6 or higher ) for checking out the code. Currently the only thing not included in the source tree, is a copy of Qt. The current version requires Qt 4.6 or higher. A disk image with an installer can be found at [1]. Note this page contains both a 64-bit or 32-bit version. Starting from OS X 10.6 the default compiler setup on OS X will build a 64-bit version, hence it is important to download a 64-bit version in that case, which is listed on the webpage, but it is not the default option. 350c69d7ab


Welcome to the group! You can connect with other members, ge...


  • indo slf