- #MAC OS X LION DMG FILE HOW TO#
- #MAC OS X LION DMG FILE MAC OS#
- #MAC OS X LION DMG FILE UPDATE#
- #MAC OS X LION DMG FILE PRO#
Note: The transfer occurs faster when the identifiers are proceeded by the letter r. diskutil unmountdisk disk5Įnter the command below to transfer a exact copy of the disk image to the flash drive. Unmount all volumes on both the flash drive and disk image by entering the commands given below. If your assignments are different, then make the appropriate substitutions in the following steps. In my case, the flash drive has been assigned disk5 and the disk image has been assigned disk6. hdiutil attach ~/Downloads/InstallESD.dmgĮnter the command below to determined the identifiers for the external, physical USB flash drive and the disk image.
#MAC OS X LION DMG FILE MAC OS#
This will mount the readonly Mac OS Extended (HFS+) volume on /Volumes/Mac OS X Install ESD. So I used the following steps to transfer an exact image from the InstallESD.dmg file to the flash drive.Įnter the command below to open InstallESD.dmg file. I was unable to use the Disk Utility included with Catalina to create a bootable USB flash drive installer.
#MAC OS X LION DMG FILE UPDATE#
Update 3: Creating a APM USB Flash Drive Installer While these two InstallESD.dmg files are different sizes, the contents are identical. This application also contains an InstallESD.dmg file in the Contents/SharedSupport folder. I should point out that the InstallMacOSX.dmg file can be used to create an Install OS X Mountain Lion application. To save space, you can move the downloaded file ~/Downloads/InstallMacOSX.dmg to the Trash, then empty the Trash. Use the Finder application to move the ~/Downloads/pkg folder to the Trash.
mv ~/Downloads/pkg/InstallMacOSX.pkg/InstallESD.dmg ~/Downloads/ Use the command below to move the InstallESD.dmg file to the ~/Downloads folder. diskutil eject /Volumes/Install\ Mac\ OS\ X/ pkgutil -expand /Volumes/Install\ Mac\ OS\ X/InstallMacOSX.pkg ~/Downloads/pkgĮnter the command below to eject /Volumes/Install Mac OS X. Here, I assume the ~/Downloads/pkg folder does not already exist. hdiutil attach ~/Downloads/InstallMacOSX.dmgĮnter the command below to extract folders and files from InstallMacOSX.dmg to the ~/Downloads/pkg folder. This will mount the readonly Mac OS Extended (HFS+) volume on /Volumes/Install Mac OS X.
#MAC OS X LION DMG FILE HOW TO#
This was tested using macOS Catalina (10.15.7).įrom How to download macOS, download the InstallMacOSX.dmg file for OS X 10.8.5 (Mountain Lion) to your ~/Downloads folder.Įnter the command below to open InstallMacOSX.dmg. Update 2: How to Get the InstallESD.dmg File from Apple I was able to download this update on the host and transfer the update to the virtual machine where installation was successful. After installing, I was able to download and install all available updates except for an update to iTunes 12.14.3. I used the bootable installer to install Mount Lion in a VMware Fusion Player (Version 12.1.0) virtual machine. I did not need to use any third party tools (such as SuperDuper) to create the installer. I was able to create a Mountain Lion bootable installer from this downloaded file. I did download the InstallMacOSX.dmg file for OS X 10.8.5 (Mountain Lion) from How to download macOS on a iMac (21.5-inch, Late 2013) with macOS 10.15.7 (Catalina) installed. However, if you are still unable to install, perhaps you should include in your question the steps you used to create the installer. Since you have stated you have correctly created the USB Mountain Lion installer, I will not post how to do so. You should choose "Mac OS Extended (Journaled)" as the format. After booting from the Mountain Lion installer, you will need to open the Disk Utility and erase the entire internal drive. My 2011 iMac will boot without any issues.Ĭatalina uses APFS which will not be recognized by Mountain Lion. OS X 10.8.4 and I can not boot from any OS X 10.8.5 installer created using instructions given in this answer.
However, shows the earliest OS X that can installed on my iMac (21.5-inch, Late 2013) is Therefore, you should be able to install Mountain Lion on your Mac.
#MAC OS X LION DMG FILE PRO#
A quick check at shows the earliest OS X that can be installed on a 2012 MacBook Pro model is between OS X 10.7 3 and OS X 10.8.2 inclusively.
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