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#HOW TO DOWNLOAD YOSEMITE INSTALLER HOW TO#
#HOW TO DOWNLOAD YOSEMITE INSTALLER FOR MAC OS X#

This format operation should take less than a minute to complete.

Click the “Erase…” button at the bottom and then the “Erase” button in the popup dialog.

Click on the “Erase” tab, select “Mac OS Extended (Journaled)” for “Format” and input a name like “Install Yosemite” (or anything because this name will be overwritten later).

On the left-hand pane, select the USB drive (not the partition under it, if any).

Launch the “Disk Utility” to format the USB Flash drive.

Plug in a USB flash drive of size 8GB or larger.

# Close all Finder instances (and re-launch so settings take effect).

# Configure Finder to show hidden system files.ĭefaults write AppleShowAllFiles TRUE Launch the “Terminal” app and run this command to move the downloaded installer app to your user’s “Downloads” folder: To keep that file, you will want to move it out of the Applications folder so it won’t be deleted after an upgrade. Note: If you run the Yosemite installer to upgrade your Mac, the downloaded installer file will be deleted automatically after the upgrade is completed. Launch “App Store” and search for “OS X Yosemite”. (If you want an earlier version like Mac OS X 10.9 Mavericks, you’ll need to get it from elsewhere.) It is the version currently available for download from the “App Store”.

#HOW TO DOWNLOAD YOSEMITE INSTALLER HOW TO#

The instructions I found that worked, using Disk Utility, were located at How to Make a Bootable OS X Mavericks USB Install Drive and How to Create a Bootable Install USB Drive of Mac OS X 10.10 Yosemite.įirst, download the latest Mac OS X version, which is 10.10 Yosemite. I tried several methods which failed to create a bootable USB flash drive before finding one that succeeded.

#HOW TO DOWNLOAD YOSEMITE INSTALLER FOR MAC OS X#

You will need an 8GB USB flash drive for Mac OS X Yosemite or Mavericks.

These instructions will also work for Mac OS X 10.9 Mavericks (excluding a Yosemite-specific step) and differ significantly from the instructions for creating a Mac OS X 10.6 Snow Leopard installer.

In this post, I will go over instructions on how to create a bootable USB flash drive containing the Mac OS X 10.10 Yosemite installer. I followed the instructions below to successfully create a bootable installer for Mac OS X 10.11 El Capitan, which is the last version to support the 2008 Core 2 Duo Macbook Pro. I needed to upgrade my sister’s 2008 Macbook Pro and found that the existing Mac OS X 10.6 Snow Leopard did not support the “createinstallmedia” tool I got a “Failed to start erase of disk due to error (-9999, 0)” error. Update 2: The instructions below will work to manually create a Mac OS X 10.11 El Capitan USB installation drive. Update: Go to Install macOS Sierra Using Bootable USB Flash Drive if you want to install macOS 10.12 Sierra instead.