If you use pkgutil to expand the InstallMacOSX.pkg it opens to three items, the Distribution file, InstallMacOSX.pkg and Resources. You can alter the Distribution file to ignore the supported platform check, see below.
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Launch Disk Utility (in /Applications/Utilities/). Select the “InstallESD.dmg” image at the left side, then click on “Convert” (choose DVD/CD master at Image Format). The InstallESD.dmg will be converted to InstallESD.cdr in seconds. Dmg Group Piese Si Service Auto Non Stop București Download Macos High Sierra Dmg File Dosdude1 Create Dmg File In Mac Firefox 61.0 2 Dmg Mysql 5.6 Mac Dmg Niresh Mavericks 10.9.5 Dmg Lion Os X Installesd.dmg Download How Open Dmg File On Window Avg Dmg Mitigated League Of Legend #4 - Restore BaseSystem.dmg to USB Drive. From the contents of the OS X Install ESD open (mount) BaseSystem.dmg (default BaseSystem.dmg Basesystem.chunklist and hidden. Use the utility 'ShowAllFiles'). Mac Os Sierra Installesd.dmg Download Free 5. Run Disk Utility and expand BaseSystem.dmg on the flash drive formatted GUID (the 'Options') and Mac OS coffee (HFS +) 6.
Creating the Install OS X El Capitan.app on a mac that came with a newer OS than El Capitan.
Download the InstallMacOSX.dmg from Section 4 of How To Upgrade To El Capitan
Double-click to open InstallMacOSX.dmg to Install MacOSX.pkg.
Drag InstallMacOSX.pkg to the Desktop.
Open Terminal, enter the text
A folder will be created on the Desktop after a while with the contents of the .pkg file.
In there you will see an item called Distribution, Control-click on that and select Open With
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go to Other and select Text Edit.
When the file opens scroll down to the section that reads,
function isSupportedPlatform(){
type in at the end return true; so it now reads as,
function isSupportedPlatform(){return true;
Now click Save and close the document.
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Go back to Terminal and enter the text,
press Return, after several minutes, be patient, (check to see if the prompt has returned to Terminal) a new package will be created on the Desktop.
When created double-click on that and an installation window will open where you will now convert the
new InstallElCapitan.pkg to the Install OS X El Capitan.app which will be placed in your Applications folder.
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You can now create a bootable USB using the install app and createinstallmedia,
If you have the time I would be grateful if you could give this a trial, it works here on my mac, but I would like confirmation from yourself or any others reading this that the procedure works on macs that came with macOS Sierra or newer pre-installed. Oh and tell me if my description of the procedure is easy to follow and understand..
Jan 15, 2020 12:58 AM
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