USB Boot Installation Mac method for new Installation Mac system

In fact, there are many ways to make an OS X Yosemite official version of a USB boot disk, such as using a command line, or using a third-party tool. This tutorial is mainly about the former, because this is the most secure, simple, and no compatibility problem I've learned at the moment.

Format U disk:

Insert your USB drive, and then locate and open Disk utility in the Application "->" utility, or search the disk utility directly with Spotlight, as shown below.

In the left-hand list find the name of the U disk and click on the top right to select "Partition", then select "1 Partitions" in "Partition Layout" in the partition information in the "name" Input "memory" (because this name will be used in the subsequent command, if you want to modify to other (English), be sure to correspond to modify the following command) in the " Format Select "mac OS Extensions (log)

At this point, do not rush to "application", but also first in the "Options" inside, the following figure

Select "guid Partition table, and then click OK

Finally, click "Application" to start the format of the U disk.

Make sure that the file named "Install OS X Yosemite" is saved in the directory of the application

In the Application "->" utility, locate the terminal and open it. You can also search "terminal" directly via Spotlight.

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/memory-- Applicationpath/applications/install\ os\ x\ Yosemite.app--nointeraction

After entering the system, you will be prompted to enter the administrator password, and then wait for the system to start making the startup disk. At this point, you will see information similar to the following in the execution of the command:

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 last "copy complete" and "done", it means that the startup disk has been made!

Making MACOSX operating system USB Boot Installation disk method tutorial

Someone asked how to make the downloaded Mac OS X operating system into an installation disk based on a U disk or a removable hard drive and install the Apple operating system on a U disk or a removable hard drive. OK, today I'm sending you a tutorial on using a mobile hard drive (or U disk) to install Mac OS X operating system for Apple computers.

There are a lot of ways to install Mac OS X operating systems--You can install the Apple OS by burning the system CD, but it's slow and cumbersome; You can also share the optical drive from another Mac to read the CD and install it over the network. On the other hand in the domestic Apple fans are "surrounded by the PC", find a second Mac is really not easy. or download-Put on a U disk or mobile hard drive installed Mac OS x system is reliable.

Making Apple Mac OS X operating system installation disk partitions for mobile hard drives

Get started! First, use the Mac OS x system's own disk utility (finder--> application--> utility--> Disk utility) to partition the removable hard disk. Select your mobile hard drive, select "Partition", click "+" button, will add a hard disk partition, drag can change the size of the partition, or direct input also line, generally 10GB bar. Note that the format--mac OS expansion type.

U disk users directly formatted into a MACOSX partition, note the point "options" to see if the partition type is a GUID partition table.

Attach the Mac OS X operating system DMG file to your mobile hard drive (or U disk)

The second step is to put the downloaded Mac OS X operating system on the hard drive partition that the mobile hard disk (or U disk) just made. Or in the MAC's own disk tool, select "Restore", there will be 2 boxes, from the list on the left to download the Apple Mac OS X operating system DMG file to the "source Object" column; "Install OS x Mountain Lion 10.8.5", The destination disk is naturally the partition (or U disk) you just made on the mobile hard drive.

OK, you can use a removable hard disk or a USB drive to install the Mac OS X operating system for the Apple Computer. Press the "option" button, the Boot Disk selection interface will appear, select your Mac OS x system installation disk.