Create Yosemite Usb Installer

| 15-09-2021
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  1. Create Yosemite Usb Installer Windows 10
  2. Create Yosemite Usb Installer Download
  3. Create Yosemite Usb Install Disk Utility
  4. Create Yosemite Usb Installer Free
  5. Create Yosemite Bootable Usb Installer

Using a MacBook Air with CATALINA, I'm trying to create a bootable USB with Yosemite, from a disk image I was able to download from Apple (19-apr-2020). I've already got the App from the PKG file in DMG. I found this Question/Answer (post/article) regarding the issue of creating a bootable UBS for Yosemite, and other OS X versions: https://discussions.apple.com/thread/8534575.

A little 'guide' about the creation of a bootable OsX 10.10 usb installer for the SurfacePro, this can be done on a Vm, another hack, or a real mac. For files and guide visit: http://www. 8GB or ‘Greater’ USB ‘Install OS X Yosemite.zip’ file downloaded from Mac Store (Download from here) Now, let’s move to the actual tutorial to create bootable OS X Yosemite USB, Connect your USB drive with Mac. Start ‘Disk Utility’. Select USB drive from the left sidebar. Click on ‘Erase’ tab from right. Now, click on ‘Erase.

Unfortunately, after following Answer (from apple recommended user), issuing sudo command for Yosemite in Terminal app to create Installer USB, using my Catalina MacBook Air, I got this error:

'/Applications/Install OS X Yosemite.app does not appear to be a valid OS installer application.'

Create

Is there a walk around? I'm stuck here. Any help would be appreciated. Thanks.


PS. I need this Yosemite Install USB for an old MacBook Pro mid 2009 5,4 that reboots using El Capitan recovery utility to reinstall. I need to tell you I've already downloaded and created bootable USB for El Capitan twice, and after a while, the install process finishes with a fail notice for some missing 'appropriate packages', hanging. From there on, only admits rebooting, which I've also tried several times. Starting or rebooting doesn't recognize Shft+Alt+Cmd+R for Internet re install option. That's why I wish to try Alt+R and Yosemite USB for a clean install:

MacBook Air 13', macOS 10.15

Posted on Apr 19, 2020 5:46 PM

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

What you need to create a bootable installer

  • A USB flash drive or other secondary volume formatted as Mac OS Extended, with at least 14 GB of available storage
  • A downloaded installer for macOS Big Sur, Catalina, Mojave, High Sierra or El Capitan

Download macOS

Create Yosemite Usb Installer Windows 10

  • Download: macOS Big Sur, macOS Catalina, macOS Mojave or macOS High Sierra
    These will be downloaded to your Applications folder as an app named Install macOS [version name]. If the installer opens after downloading, quit it without continuing installation. To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
  • Download: OS X El Capitan
    This will be downloaded as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It will install an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the 'createinstallmedia' command in Terminal

  1. Connect the USB flash drive or other volume that you're using for the bootable installer.
  2. Open Terminal, which is in the Utilities folder of your Applications folder.
  3. Type or paste one of the following commands in Terminal. These assume that the installer is in your Applications folder and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume in these commands with the name of your volume.

Big Sur:*

Catalina:*

Mojave:*

High Sierra:*

El Capitan:

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument and installer path, similar to the way this is done in the command for El Capitan.


After typing the command:

  1. Press Return to enter the command.
  2. When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
  3. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased.
  4. After the volume has been erased, you may see an alert stating that Terminal would like to access files on a removable volume. Click OK to allow the copy to proceed.
  5. When Terminal says that it's been completed, the volume will have the same name as the installer you downloaded, such as Install macOS Big Sur. You can now quit Terminal and eject the volume.

Create Yosemite Usb Installer Download

Use the bootable installer

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Create Yosemite Usb Install Disk Utility

Apple silicon

  1. Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
  2. Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes.
  3. Select the volume containing the bootable installer, then click Continue.
  4. When the macOS installer opens, follow the onscreen instructions.

Intel processor

  1. Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing.
  2. Press and hold the Option (Alt) ⌥ key immediately after turning on or restarting your Mac.
  3. Release the Option key when you see a dark screen showing your bootable volumes.
  4. Select the volume containing the bootable installer. Then click the up arrow or press Return.
    If you can't start up from the bootable installer, make sure the External Boot setting in Startup Security Utility is set to allow booting from external media.
  5. Choose your language, if prompted.
  6. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

Learn more

Create Yosemite Usb Installer Free

A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model.

Create Yosemite Bootable Usb Installer

For information about the createinstallmedia command and the arguments you can use with it, make sure the macOS installer is in your Applications folder, then enter the appropriate path in Terminal: