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#Download yosemite installer app developer how to
#Download yosemite installer app developer mac os

Click on Disk Utility and then hit Continue.This could take a few seconds or minutes. Wait until the Yosemite installer appears on screen.Choose the USB drive on the start-up drive selection screen and hit Enter/Return on the keyboard.As soon as the start-up chime plays, press the Option key (Alt). Ensure the bootable USB flash drive is plugged into your Mac and restart the computer.

#Download yosemite installer app developer how to

How to Clean Install OS X Yosemite on Your Mac The OS X Yosemite bootable USB flash drive will be ready for use and you can start the clean installation process. Once the process completes, you will see the message "Copy Complete. Do not interrupt the Terminal or eject the flash drive during the process.

This will create the bootable USB flash drive.

Sudo /Applications/InstallOSXYosemite.app/Contents/Resources/createinstallmedia -volume /Volumes/YosemiteInstaller -applicationpath /Applications/InstallOSXYosemite.app -nointeraction

Launch the Terminalapp (in Applications/Utilities) and copy-paste the following command in, and then hit Enter:.

Click on Option and ensure GUID Partition Table is selected as the partition scheme, with its name set to YosemiteInstaller.

Then choose Partition tab and select 1 Partition from Partition Layout dropdown menu.

Now click on Erase button and wait until the format process completes.

#Download yosemite installer app developer mac os

Choose Mac OS Extended (Journaled) in the format box and set the name be YosemiteInstaller.

Select the USB drive from the left sidebar and click on Erase tab.

Plug in your USB drive into the computer and open Disk Utility (in Applications).

Once it's downloaded, just quit the installer and set the downloaded file's name to InstallOSXYosemite.app (make sure only. (a USB3 one will be much quicker).įirst download the OS X 10.10 Yosemite installer from the Mac App Store in the Purchases section (you may need to hold alt/option while selecting Purchases). You'll need to make a Yosemite USB installer - it has to be at least 8GB.