Create a Bootable USB Stick from an Older Version of macOS - iFixit 修理ガイド

はじめに

How to create Bootable USB Stick for old version of macOS/Mac OSX.

Error : This version of OS X/macOS cannot be installed on this computer.

手順1 Create a Bootable USB Stick from an Older Version of macOS

Create a Bootable USB Stick from an Older Version of macOS, Create a Bootable USB Stick from an Older Version of macOS: 手順 1、 1の画像 1

Download the version of the OS you want to install here: https://support.apple.com/en-gb/HT211683

手順2

Create a Bootable USB Stick from an Older Version of macOS: 手順 2、 1の画像 1

Open InstallMacOSX.dmg by double-clicking.
Double-click on InstallMacOSX.pkg
The installer runs

手順3

Create a Bootable USB Stick from an Older Version of macOS: 手順 3、 1の画像 1

If you don't get the following error: "This version of OS X/macOS cannot be installed on this computer."
Wait for the end of the installation and follow the following tutorial : 起動用USBを作成する方法
Otherwise, go to the next step.

手順4

Create a Bootable USB Stick from an Older Version of macOS: 手順 4、 1の画像 1

Quit the installer and drag and drop the InstallMacOSX.pkg file on your Desktop

手順5

Create a Bootable USB Stick from an Older Version of macOS: 手順 5、 2の画像 1

Create a Bootable USB Stick from an Older Version of macOS: 手順 5、 2の画像 2

Open Terminal and enter the following command: "cd Desktop"
Enter the following command: "pkgutil --expand /Desktop/InstallMacOSX.pkg FolderName" (You can change FolderName to any name you want)
A folder with the name you gave appears on your Desktop.

手順6

Create a Bootable USB Stick from an Older Version of macOS: 手順 6、 3の画像 1

Create a Bootable USB Stick from an Older Version of macOS: 手順 6、 3の画像 2

Create a Bootable USB Stick from an Older Version of macOS: 手順 6、 3の画像 3

Open the folder appeared on the desktop.
Open the "Distribution" file with TextEdit.
Look for the line with "var platformSupportValues"

手順7

Create a Bootable USB Stick from an Older Version of macOS: 手順 7、 2の画像 1

Create a Bootable USB Stick from an Older Version of macOS: 手順 7、 2の画像 2

Let TextEdit open and go to the Terminal and enter the following command: "ioreg -l | grep -i board-id"
Copy "Mac-XXXXXXXX"
Go back to TextEdit and after the symbol "=" and in the brackets paste "Mac-XXXXX" and add a comma ","
Save and close the file

手順8

Create a Bootable USB Stick from an Older Version of macOS: 手順 8、 2の画像 1

Create a Bootable USB Stick from an Older Version of macOS: 手順 8、 2の画像 2

Go back to the terminal and type the following command: pkgutil --flatten FolderName New.pkg (FolderName = the name of the folder and New.pkg = the new .PKG file that will be created)
Press enter and wait for the file to be created
Launch the new .PKG file
Congratulations you can launch the installer.
To continue creating the USB Stick follow the following tutorial : 起動用USBを作成する方法

終わりに

You're done BRAVO !!

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Anthony Fassler

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Anthony Fassler

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