How To Install Mac Os Yosemite From Usb

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In this article, I will show you how to install Mac OS X Yosemite 10.10 on VirtualBox on Windows. If you are curious to know information about, this operating system here I will give you the full information about this great operating system. OS X Yosemite is an 11th major release of the Mac operating system. When its done, you can insert that drive into any Mac and launch the installer by holding Option when you boot the computer. Besides installing Yosemite, this drive will have a couple handy. If you have access to other partitions or drives attached to your Mac, a Show All Disks button will also appear. To chose a different volume or partition to install Yosemite on, click this button. First connect your USB drive to the Mac computer and launch Disk Utility tool. Now select drive indicating USB flash drive (select the USB drive you want to make the bootable installer) from the available drives list Then just click on the ' Erase ' tab and format the drive as 'Mac OS Extended (Journaled)'.

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.

Note: This guide to make installer USB drive is for OS X Yosemite Developer Preview

See also: Dual Boot OS X Yosemite and Mavericks

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Make OS X Yosemite Bootable USB

Requirements

  • You must have an external USB drive or storage media with capacity of at-least 8GB (Save data from it because we are going to format it).
  • OS X Yosemite installer downloaded (You can join OS X Beta program)

Prepare USB drive for OS X Yosemite

Open Disk Utility from 'Applications' > 'Utilities' or press 'cmd+space' keys form keyboard to find 'Disk Utility'.

Plug the external USB drive into Mac (make sure you save your stuff from it). Once you attached the USB drive, it will shown on the left panel of Disk Utility.

Select the drive and then do the following steps to create a single partition that is required to make USB installer drive for OS X Yosemite 10.10.

Click on 'Partition Layout' drop-down menu and select '1 Partition' option from it.
Then enter the Partition information Name: 'osxyosemite', Format: 'Mac OS Extended (Journaled)'.
Click the 'Options' button to select the partition scheme, so select 'GUID Partition Table' option and click OK button.

To complete the creating partition process hit the 'Apply' button and then 'Partition' button. This will take some time to format and making USB drive as a 1 partition. Once done, you will notice a new drive name will be displayed on the left side, the name that you given in the partition information. Now close the Disk Utility tool.

Show hidden files

Showing hidden files is required, because there are few hidden files in the OS X Yosemite installer package that you need to unhide first to write them on bootable USB drive.

Open Mac 'Terminal' command line: press cmd+space keys and type Terminal in the spotlight, click the Terminal from search results or just open the Terminal from Applications > Utilities > Terminal.

Type the following two commands one by one:

defaults write com.apple.finder AppleShowAllFiles YES

Killall Finder

First command is going to show hidden files and the second one is to restart the Finder so we can see the instant effect of first command. Close the Terminal.

Open Applications, here you will see your downloaded OS X Yosemite file 'Install OS X 10.10'. Cmd+click on it to view the menu, select 'Show Package Contents'.

Open 'Contents' > 'SharedSupport' folder and here you will see 'InstallESD.dmg' file, double click to open the file and OS X may starts verifying this file so let the verification process finished.

After that you will see a folder with the following content in it, 'BaseSystem.dmg' is the file that we need and it was hidden, so now you know that why we show the hidden files in above steps.

Open the Disk Utility again from 'Applications' > 'Utilities' > 'Disk Utility' or by using Spotlight search.

Load the 'BaseSystem.dmg' file into the Disk Utility, right-click on the file and choose 'Open With' > 'Disk Utility' option. After doing that open the Disk Utility and you will see the file 'BaseSystem.dmg' is loaded in the Disk Utility on the left side.

Restore Disk Image

Now we are going to restore 'BaseSystem.dmg' disk image on the USB drive.
Select your USB partition that we created in previous first steps, then click the Restore tab.
Under Restore tab there are two fields, Source and Destination.
Click and drag the 'BaseSystem.dmg' to Source field and 'osxyosemite' usb drive to Destination filed, see screenshot below to get more idea. When done hit the Restore button and you need to confirm 'Are you sure you want to replace the content on USB drive with the content of disk image' so click the Erase button to confirm, after that you may need to enter the administrator password. Restoring disk image is time taking process so be patient.

Once the restoring disk image process is finished you will see a folder like this. Here, open the 'System' > 'Installation' folders and move the Packages file to trash.

Copy the 'Packages' folder from the folder where the 'BaseSystem.dmg' exist. and paste it into the Installation folder that you just opened in previous step.

First aid external hard drive mac. Hide the system files again using this command
defaults write com.apple.finder AppleShowAllFiles NO

How to Boot from USB Drive

You must know the system requirements of OS X Yosemite before installing it, If your system to capable to run this OS X version 10.10 then Shutdown your Mac, plug the OS X Yosemite Bootable USB into Mac. Press the power button again to turn it On and then hold the Alt or Option key from keyboard, when you see this screen release the button. Play free slots win real money. Use macbook pro as monitor for xbox. Double click on the USB drive to boot from it.

Congratulations! you successfully perform all steps to make bootable USB drive to install OS X Yosemite on more that one Mac computers without worried of downloading it on each computer separately, you will saved lot of bandwidth and time as well. Thanks for reading if you have any problem we are here to help you just write your problem below in comments box.

Related Content

The all now OS X 10.10 Yosemite is out now and its a free upgrade like Mavericks. It's very simple task to upgrade an exsisting os to Yosemite with 'App Store'. It's actualy one click away from Yosemite. But if you need to install a fresh copy of Yosemite into your macbook, you will need either a DVD installer or a Bootable Yosemite installer.

Why a fresh install

Many people says slow issues after upgrading to old version Mavericks. And after upgrading some of your already installed apps wont work. Keeping a USB installer drive is a good idea to use it for recovery or troubleshooting purposes. And if you have one bootable installer, you can use it with your other Macs to install the Yosemite. It really really helps you by avoiding downloading the Yosemite installer file in each Mac.

What to backup

Before you start installing Yosemite, you should backup all the important data to an external resource. Installing the OS X is a kind of formatting your Mac. The process will wipe out the entire Hard disk. And more thing, you done need to backup or note a product key like windows product key in your mac. Mac doesn't ask any product key while installing. Your Apple hardware is the product key for all your OS X installations.

OS X Yosemite hardware requirements

Install

Create Mac Os Usb Install

You should check wether your current hardware is compatible with Yosemite. Minimum ram required for Yosemite is 2GB. But 4 GB or higher is recommended for best performance. A hard disk space of 40GB is recommended for installing Yosemite with ease. Please note your entire HDD will wipe out while installing the Yosemite.

  • Macbook air late 2008 or later
  • Macbook Pro mid 2007 or later
  • Mac mini early 2009 or later
  • iMac mid 2007 or later
  • Mac Pro 9 early 2008 or later

Making a USB installer is an easiest task if you already downloaded the Yosemite installer '.App' file. For downloading the file you should go to the 'App Store' and then select the 'Updates' tab on the top right position. Click on the 'free upgrade' option for downloading the Yosemite installer file. The app file size will be 5.16GB as i can see here. Now the installer file is downloading to the /Applications directory.

You need a 8GB or higher capacity USB pen drive which formatted as 'Mac OS Extended (journaled)'

How To Install Mac Os Yosemite From Usb 3.0

Prevent auto deleting the downloaded file

After completing the download you should copy the downloaded file from /Applications directory to somewhere (i.e. to desktop). Because the downloaded file will automatically delete after starting the automatic upgrade process. Make sure you copied to a different directory. The downloaded file name and extension should look like Install OS X Yosemite.app. Now you are not far from create bootable usb of yosemite.

Create bootable usb of yosemite

Now all set for create bootable usb of yosemite. Here in my case, i copied the Yosemite installer file 'Install OS X Yosemite.app' to my 'Desktop'. And my 16gb USB drive name is 'Sandisk' and its plugged to my Mac. Now open the terminal and execute one command to make the stuff.

NB: Make sure you give a different name for your USB drive than the your main HDD of your Mac.

How To Install Mac Os Yosemite From Usb Windows 10

Execute the below command to create bootable usb of yosemite. Done forget to change the directory names with yours.

How To Install Mac Os Yosemite From Usb Flash Drive

sudo /Users/Sreekanth/Desktop/Install OS X Yosemite.app/Contents/Resources/createinstallmedia –volume /Volumes/Sandisk –applicationpath /Users/Sreekanth/Desktop/Install OS X Yosemite.app –nointeraction

After 10 to 20 minutes your all new OS X Yosemite bootable USB installer will be ready.

For more about OS X Yosemite visit Apple https://tivcudingprot1977.wixsite.com/softdude/post/word-for-mac-free-download-full-version.





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