How To Make Bootable Os X Yosemite

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Since there haven't been CD's or DVD's to reinstall Mac OS X software in the last few years, here's a fast and easy way to get yourself any of the Macintosh OS X versions on your own USB flash drive. This is a great trick for any Macintosh IT folks who need to do installs all day long!

What you'll need for your Mac OS X Yosemite USB installer

1. By far the easiest way to create a bootable drive is to use the DiskMaker X application, which automates the entire process in the next method. To start out, download the newest version of DiskMaker X from its website. Currently, that's the Yosemite Beta version.
2. Oct 18, 2014 Mac OS users who want to install OS X 10.10 Yosemite on their machines and are facing issues installing the operating system for the first time on their Macs can follow a simple step-by-step guide.

Oct 18, 2014 Update: the app I had previously used to create bootable OS X instal disks, DiskMaker X, doesn't work reliably for Yosemite. And the developer seems to have lost interest in the project with version 4b4, which has not been updated since October of last year. So I returned to this article to do it Topher's way.

1. At least an 8GB USB flash memory stick, such as this model
2. The Mac OS X Yosemite downloaded installer (more on this soon)
3. Some Mac OS X Terminal voodoo (more on this, too)

The first step in creating your own bootable USB Mac OS X Yosemite install drive

First, we are going to insert our USB flash drive–make sure it's empty since it will be erased later. It has to be formatted in disk utility if it's not already formatted, so go ahead and do this in the disk utility program. Make sure the name of the flash drive is 'untitled' for the sake of this example. Also make sure you have the Mac OS X Yosemite installer, which is located in the Applications folder. If you don't see it there, you will have to go to the Mac App Store and redownload it from your purchases tab. This may take awhile, since the file is around 6GB.

We are going to launch the Terminal, which is located in the Utilities folder inside of your Applications folder. If you don't know where any of that is, this article may be a bit advanced for you. Launch the Terminal and copy and paste the next code into the Terminal window and hit return–(you will be asked for your administration password!):

sudo /Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled –applicationpath /Applications/Install OS X Yosemite.app –nointeraction

The Terminal will now show you progress of the process, which can take 30 to 90 minutes or even more. You will see things like: Erasing Disk: 0%…10 percent…20 percent… during the process. Eventually, it will copy the installer files and make the disk bootable. After the 'done' command appears, you will have a perfectly good Yosemite Mac OS X installer USB drive.

Acme uninstaller. OS X Yosemite final version is available to download from App Store. Download and update it from OS X App Store or create a Bootable installer drive so you can easily use this installer USB drive to clean install OS X Yosemite or to install OS X 10.10 on multiple computer without downloading again and again on different computers. There a re few requirement before start following this guide.

See also: Dual Boot OS X Yosemite and OS X Mavericks

• Check, Is your Mac capable to run OS X Yosemite?
• You need a 8 GB or higher capacity USB drive or a external hard disk.
• Save data from your USB or Hard disk drive because we need o format it.
• OS X Yosemite.app installer file.

Prepare USB Drive for OS X Yosmite

First we need to format USB drive using built-in tool Disk Utility. Run Disk Utility tool from Applications > Utilities.

Here on Disk Utility interface,

1. Select USB drive from left-side.
2. Click the Partition Tab.
3. Click Partition Layout drop-down and select '1 Partition' option.
4. Enter the partition name 'osxyosemite' and select 'Mac OS Extended (Journaled)' from Format drop-down menu.
5. Click the Options button

Select 'GUID partition Table' and click the OK button and then hit Apply and create a partition. This will take some time to format and create a new partition.

Make OS X Yosemite Installer USB Drive

Download 'Install OS X Yosemite.app' from App Store, its a big download so make sure you have a good internet download speed.

Once downloaded the setup this will start the installer automatically so quit the installer setup.

Open Applications folder and confirm the 'Install OS X Yosemite.app' file is available there.

Burn OS X Yosemite on USB

To start the making bootable USB drive you need to open Mac Terminal. Press CMD+Space from keyboard, find and run Terminal app.

Once Terminal is running, copy and paste the following command in Terminal and hit the Enter key to execute the command. Here you may need to enter the admin password, If prompted for the password enter the administrator password and hit Enter key.

This will start making OS X Yosemite installer USB Drive and will take about 20 minuets, so be patient and don't remove the drive from computer and also stop doing any other task while making installer USB. 320 kbps music download sites.

Once you see Done message on Terminal window, you are good to go and install fresh OS X Yosemite or even use this bootable installer USB drive on different computer to install OS X Yosemite.

Boot from USB Drive

To boot form USB drive you need to reboot you Mac and press Option key while rebooting on start-up. You will see options to select drive to boot from.

How To Create A Bootable Usb Mac Os X Yosemite

This will start making OS X Yosemite installer USB Drive and will take about 20 minuets, so be patient and don't remove the drive from computer and also stop doing any other task while making installer USB. 320 kbps music download sites.

Once you see Done message on Terminal window, you are good to go and install fresh OS X Yosemite or even use this bootable installer USB drive on different computer to install OS X Yosemite.

Boot from USB Drive

To boot form USB drive you need to reboot you Mac and press Option key while rebooting on start-up. You will see options to select drive to boot from.

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