Now open the terminal and execute one command to make the stuff. And my 16gb USB drive name is “Sandisk” and its plugged to my Mac. Here in my case, i copied the Yosemite installer file “Install OS X Yosemite.app” to my “Desktop”.
Now all set for create bootable usb of yosemite. Now you are not far from create bootable usb of yosemite.
Create a bootable usb for os x yosemite install#
The downloaded file name and extension should look like Install OS X Yosemite.app. Make sure you copied to a different directory.
Create a bootable usb for os x yosemite upgrade#
Because the downloaded file will automatically delete after starting the automatic upgrade process. sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia -volume /Volumes/Yosemite -applicationpath /Applications/Install\ OS\ X\ Yosemite.app -nointeraction Note that you should replace the 'Yosemite' in 'Volumes/Yosemite' with whatever you named your USB drive. You need a 8GB or higher capacity USB pen drive which formatted as “Mac OS Extended (journaled)” Prevent auto deleting the downloaded fileĪfter completing the download you should copy the downloaded file from /Applications directory to somewhere (i.e. The app file size will be 5.16GB as i can see here. Now the installer file is downloading to the /Applications directory. Click on the “free upgrade” option for downloading the Yosemite installer file. For downloading the file you should go to the “App Store” and then select the “Updates” tab on the top right position. Making a USB installer is an easiest task if you already downloaded the Yosemite installer “.App” file. Please note your entire HDD will wipe out while installing the Yosemite. A hard disk space of 40GB is recommended for installing Yosemite with ease.
But 4 GB or higher is recommended for best performance. Minimum ram required for Yosemite is 2GB. You should check wether your current hardware is compatible with Yosemite. Your Apple hardware is the product key for all your OS X installations. Mac doesn’t ask any product key while installing. And more thing, you done need to backup or note a product key like windows product key in your mac. The process will wipe out the entire Hard disk. Installing the OS X is a kind of formatting your Mac. What to backupīefore you start installing Yosemite, you should backup all the important data to an external resource. It really really helps you by avoiding downloading the Yosemite installer file in each Mac. And if you have one bootable installer, you can use it with your other Macs to install the Yosemite.
Keeping a USB installer drive is a good idea to use it for recovery or troubleshooting purposes. And after upgrading some of your already installed apps wont work. Many people says slow issues after upgrading to old version Mavericks.
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