= MacOS Install downloads

== Download
The installer must be downloaded from App Store, and you need an Apple ID with a payment method (Credit card). You can select "None" as payment method, but then you cannot download!

The App Store link for High Sierra is \\
[[macappstores://apps.apple.com/app/macos-high-sierra/id1246284741?mt=12]]

Links to other versions in the App store can be found at https://support.apple.com/en-us/HT211683

After the download it will start the installer.

== Make USB

To create a USB key with the installer:

* cancel the installation
* insert USB key
* set the name of the USB key in a variable: <code>name=U # <== Volume name (eg. "USB_Installer")</code>
* Run <code>sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/$name
</code>  

or with other versions or methods, maybe adding the ''--applicationpath'' option is useful?

  sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra.app

=== Format USB
This step is probably unnecessary, because the installer does the formatting?

  diskutil list | grep -A6 external
  disk=disk4; name=USB_Installer     # <== Define variables
  diskutil eraseDisk HFS+ $name $disk


== If incomplete download:

This one might only get a small stub instead of the full image: https://apps.apple.com/us/app/macos-high-sierra/id1246284741?mt=12

To get the full installer:

  * Start the installer, which will download missing stuff
  * Quit when prompted to restart
  * Copy downloaded files to the right place :  

  sudo cp -pRv "/macOS Install Data" "/Applications/Install macOS High Sierra.app/Contents/SharedSupport"
  
Or directly download the missing stuff:

File list: https://swscan.apple.com/content/catalogs/others/index-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

  * [[http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7/BaseSystem.dmg|BaseSystem.dmg]]
  * [[http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7/BaseSystem.chunklist|BaseSystem.chunklist]]
  * [[http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7/InstallInfo.plist|InstallInfo.plist]]
  * [[http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7/InstallESDDmg.pkg|InstallESDDmg.pkg]]
  * [[http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7/AppleDiagnostics.dmg|AppleDiagnostics.dmg]]
  * [[http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7/AppleDiagnostics.chunklist|AppleDiagnostics.chunklist]]

Or :

  url=http://swcdn.apple.com/content/downloads/29/03/091-94326/45lbgwa82gbgt7zbgeqlaurw2t9zxl8ku7
  curl -R --remote-name-all $url/{BaseSystem,AppleDiagnostics}.{dmg,chunklist} $url/Install{Info.plist,ESDDmg.pkg}


==See also

[[https://forums.mydigitallife.net/threads/download-full-macos-installers-from-command-line.84790/|This forum post]] (or [[https://scriptingosx.com/2019/10/download-a-full-install-macos-app-with-softwareupdate-in-catalina/|this page]]) suggest using ''softwareupdate''. It didn't work for me, but may be worth trying:

  softwareupdate --list-full-installers
  softwareupdate --fetch-full-installer --full-installer-version 10.13.6 # adapt version number
 
https://www.insanelymac.com/forum/topic/329828-making-a-bootable-high-sierra-usb-installer-entirely-from-scratch-in-windows-or-linux-mint-without-access-to-mac-or-app-store-installerapp/

https://apple.stackexchange.com/questions/299731/macos-high-sierra-media-installer

https://apple.stackexchange.com/questions/324710/install-macos-high-sierra-app-does-not-appear-to-be-a-valid-os-installer-applica



[[https://support.apple.com/en-us/HT201372|Apple's How to create a bootable installer for macOS]] :

  sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume