However, if you wish for a complete clean install of OS X’s latest on your Mac, the best way to go about this is to create a bootable USB drive of Yosemite. In this guide we will show you how to do just that. The older method used to make bootable drives of OS X Lion and Mountain Lion installer did not work for OS X Mavericks. I just re-installed Yosemite from Recovery HD. Performed a clean install as i erased my HD from Recovery HD before installing the software. Yosemite is being downloaded since a few hours but it would be the same with the USB Installer as Recovery HD is an Installer too.
- Oct 16, 2014 OS X Yosemite Installer. Official OS X Yosemite Installer from the Mac App Store. Un-archive the zip archive and you will get the app Installer. A bootable ISO or bootable USB can be made from this installer. Instructions on how to do that are on the Internet/Youtube. NOTE: If you get a damaged message when launching, no need to worry.
- The workaround is to create a bootable USB flash drive containing the OS X Yosemite installer. While it's easiest to use a USB flash drive as the destination for the installer, you can use any bootable media, including hard drives, SSDs, and USB flash drives.
There are many ways that you can create a bootable Mavericks USB Drive but this seems to me the far easiest way to do so. In this article I will assume that you already have a reasonable grasp of the OSX system and cut out the lengthy text:
1. Download Yosemite from the Apple Store
Yosemite can be downloaded directly from Apple Store here. After download it will try and install automatically on your Mac. Just cancel out of this.
2. Verify the Installation Files are present
Head over to your Applications folder and check that there is a file which says Install Yosemite
2. Prepare a USB Flash Drive (Must be 8Gb or larger)
- Plug the USB Drive in to your Mac and open “Disk Utility” (found under applications / utilities in finder)
- Select the USB Drive
- Select the Erase tab
- Ensure that the format is Mac OS Extended (Journaled)
IMPORTANT – Leave the name as “Untitled”. If you change this the next step won’t work
3. Create the Bootable Yosemite USB Drive
Open up Terminal (found in applications)
Type this in:
Yosemite Usb Installer Windows
Wait for the process to complete. Done.
4. Boot from the Yosemite USB Drive
Restart your computer and hold down “Option”. You can now select the USB Drive you just created.
Mac Os Yosemite Usb Installer
This article is an updated version of our previous Mavericks USB Install Guide.