Create a bootable install usb drive of mac os x 10 10 yosemite step 1 reformat your usb drive. I hope this hel. Drag the basesystem dmg icon into the source field on the right if it isn t. Click on the download button. Select usb drive from the left sidebar. Now that your usb thumb drive is ready you ll need to open the. The traditional method of creating a bootable OS X USB installer no longer works, so you’ll need to follow a new approach when dealing with OS X Yosemite. While there are multiple methods that will work, here’s the easiest way to create a bootable OS X 10.10 Yosemite USB Installer for the Yosemite Public Beta. Creating a bootable USB drive of OS X Yosemite 10.10 if you want to save it on a external drive for future usage or just want to install it on multiple Mac computers. To make OS X Yosemite bootable USB installer drive, there are few requirements. Lets see what are those. MacBook Pro (Retina, 13-inch,Early 2015), OS X Yosemite (10.10.5) Posted on Dec 8, 2016 7:39 PM Reply I have this question too (67) I have this question too Me too (67) Me too.

In order to create a bootable USB with OS X Yosemite (10.10), you need to use an 8 GB+ USB storage device.

Step 1

Download 'Install OS X Yosemite.app' from App Store.

Step 2

Open Disk Utils and create one HFS+ Partition on the USB called 'Install.' On the Partition options select GUID.

Step 3

Open 'Terminal' and paste the following command:

Enter 'admin password' and wait a few minutes, until you see:This is a fast option, and it does not provide too much feedback. If you want to use a graphical interface, you can use DiskMakerX. (4.0 Beta 3 or newer).

Follow Steps 1 and 2, after that just run the program, select 10.10, 'Install OS X Yosemite.app' and wait for the program to finish.

Download Os X Yosemite 10.10 Bootable Usb Download

Depending on your USB device, the process could take 5 to 15 minutes. A USB 3.0 drive is recommended.

Make Yosemite Install Usb

Once you're there, you have only a few more things to do in order to start the installation of your new Yosemite OS X version. Simply plug in your bootable USB drive, reboot the system and press the Option key during the booting process. Select the USB drive as a boot source and the installation process should start. Follow the on-screen instructions and you should be good to go.