How to make and install MAC OS USB Drive

With the release of hardware such as IMac 5K Retina and the new Mac Mini, Apple has finally rolled out the OS X Yosemite system version! I believe a lot of people have already used it. But for some friends who don't want to upgrade, they're going to have a "new install" system that has a small problem.

That is how to make OS X Yosemite official version of the USB flash drive installation disk? In fact, the method is relatively simple, below we will bring you a production Yosemite u disk boot Disk/installation disk tutorial bar. It's much easier to reinstall your MAC later, without a network, or to install a system for more than one machine ...

A simple way to make a Mac OS X Yosemite full version USB boot disk Tutorial:

In fact, there are many ways to make an OS X Yosemite full version of the USB boot disk , such as using the command line and using third-party tools. This tutorial mainly describes the former, because this is the most secure, simple, and there is no compatibility problem of the method.

But you can not be "command line" three words scare, in fact, you just follow the steps, copy and paste commands can be completed quickly, in fact, is very simple.

First, the preparatory work:

1. Prepare a USB flash drive with a capacity of 8GB or more to ensure that the data is properly backed up (this process erases all data on the USB stick)
2. Download the official version of Apple OS X Yosemite installer (optional appsotre or online download)
3. If you downloaded from Mac AppStore, the installer may start automatically when the download is complete, then exit the installation
4. If downloaded from a network disk, please move to "Install OS X yosemite.app" (Shown as "Installing OS X yosemite.app") to the "Applications" folder

Second, the format of the U disk:

Insert your USB flash drive, and then find and open Disk utility in the Application "->" utility, or open it directly with the Spotlight search Disk utility, as in.

• 1-Find the name of the USB flash drive in the left list and click
• Select 2-partition on the top right, then select 1 partitions in 3-partition layout
• 4 "name" in the partition information input "iplaysoft" (because this name will be used in subsequent commands, if you want to change to another (English), be sure to modify the following command)
• Select 5-"mac OS Extension (journaled) in format
• At this point, do not rush to the "application", but also first in the 6 "options", such as

• Select the "guid partition table, and then tap OK
• Finally, click "Apply" to start formatting the USB drive.

Third, the input Terminal command to start making the Startup disk:

• Again, make sure that the file named "Install OS X Yosemite" is saved in the "Application" directory
• Find "terminal" in "Application"->"utility" and open it. You can also open it directly via Spotlight search "terminal"
• Copy the following command and paste it into "terminal" and press ENTER to run:

Sudo/applications/install\ os\ x\ Yosemite.app/contents/resources/createinstallmedia--volume/volumes/iplaysoft-- Applicationpath/applications/install\ os\ x\ Yosemite.app--nointeraction

After entering, you will be prompted to enter the administrator password, the next step is to wait for the system to start making the boot disk. At this point, you will see a message similar to the following in the command execution:

Erasing disk:0% ... 10% ... 20% ... 30% ... 100% ...
Copying installer files to disk ...
Copy complete.
Making Disk Bootable ...
Copying boot files ...
Copy complete.
Done.

When you see the end of the "copy complete" and "done" words appear is that the boot disk has been made!

Iv. How to start installing OS X Yosemite on U disk:

When you insert a completed OS X Yosemite USB drive Boot Disk , the desktop appears "install OS X yosemite" drive letter that means the boot disk is normal. So how to do a new system installation via USB boot?

In fact, it is very simple, first plug the USB flash drive on the target computer, then restart your Mac, and then press and hold the "option" (ALT) button until the screen shows the option of a USB boot disk, such as.

At this time choose the icon of the U disk to enter, you can install Yosemite by USB stick! At this point, you can directly overwrite the installation system (upgrade), or you can format the disk tool to erase the entire hard disk, or re-partition to achieve a clean installation of new

How to make and install MAC OS USB Drive