Bootable Os X Yosemite Usb

Update: Go to Install macOS Sierra Using Bootable USB Flash Drive if you want to install macOS 10.12 Sierra instead.

Update 2: The instructions below will work to manually create a Mac OS X 10.11 El Capitan USB installation drive. I needed to upgrade my sister’s 2008 Macbook Pro and found that the existing Mac OS X 10.6 Snow Leopard did not support the “createinstallmedia” tool; I got a “Failed to start erase of disk due to error (-9999, 0)” error. I followed the instructions below to successfully create a bootable installer for Mac OS X 10.11 El Capitan, which is the last version to support the 2008 Core 2 Duo Macbook Pro.

OS X Yosemite bootable USB. Step 1: First step is to download OS X Yosemite installation file. The download size is about 5.2 GB and can be downloaded by following the instructions in our how to download OS X Yosemite guide. Step 2: Next step is to download and install DiskMaker X app. Plug the USB Drive in to your Mac and open “Disk Utility” (found under applications / utilities in finder) Select the USB Drive; Select the Erase tab; Ensure that the format is Mac OS Extended (Journaled) IMPORTANT – Leave the name as “Untitled”. If you change this the next step won’t work. Create the Bootable Yosemite USB Drive.

In this post, I will go over instructions on how to create a bootable USB flash drive containing the Mac OS X 10.10 Yosemite installer. These instructions will also work for Mac OS X 10.9 Mavericks (excluding a Yosemite-specific step) and differ significantly from the instructions for creating a Mac OS X 10.6 Snow Leopard installer. You will need an 8GB USB flash drive for Mac OS X Yosemite or Mavericks.

I tried several methods which failed to create a bootable USB flash drive before finding one that succeeded. The instructions I found that worked, using Disk Utility, were located at How to Make a Bootable OS X Mavericks USB Install Drive and How to Create a Bootable Install USB Drive of Mac OS X 10.10 Yosemite.

Download the Mac OS X 10.10 Yosemite

First, download the latest Mac OS X version, which is 10.10 Yosemite. It is the version currently available for download from the “App Store”. (If you want an earlier version like Mac OS X 10.9 Mavericks, you’ll need to get it from elsewhere.)

Launch “App Store” and search for “OS X Yosemite”. Download it. (It is 5.16GB in size.)

Note: If you run the Yosemite installer to upgrade your Mac, the downloaded installer file will be deleted automatically after the upgrade is completed. To keep that file, you will want to move it out of the Applications folder so it won’t be deleted after an upgrade. Launch the “Terminal” app and run this command to move the downloaded installer app to your user’s “Downloads” folder:

sudomv/Applications/Install OS Yosemite.app/ ~/Downloads/
Bootable Os X Yosemite Usb

Create Bootable USB Flash Drive Installer

By default, the Finder will hide system files which we will need to see. Run these commands in the “Terminal” app to expose the hidden files:

# Configure Finder to show hidden system files.
defaults write com.apple.finder AppleShowAllFiles TRUE
# Close all Finder instances (and re-launch so settings take effect).
killall Finder

Prepare the USB flash drive:

  1. Plug in a USB flash drive of size 8GB or larger.
  2. Launch the “Disk Utility” to format the USB Flash drive.
  3. On the left-hand pane, select the USB drive (not the partition under it, if any).
  4. Click on the “Erase” tab, select “Mac OS Extended (Journaled)” for “Format” and input a name like “Install Yosemite” (or anything because this name will be overwritten later).
  5. Click the “Erase…” button at the bottom and then the “Erase” button in the popup dialog. This format operation should take less than a minute to complete.

Restore the Yosemite installation image to the USB flash drive:

  1. Launch the Finder and locate the “Install OS Yosemite.app” file. Right-click (hold the “control” key and click) on it and select “Show Package Contents”.
  2. Open Contents, then SharedSupport, and double-click on the InstallESD.dmg (disk image) file to mount it. A volume called “OS X Install ESD” will show up on the desktop and under DEVICES in the Finder.
  3. In the “OS X Install ESD” volume, right-click on the “BaseSystem.dmg” file and select “Open” to mount it. (Double-click won’t perform any action because it is a hidden file.)
  4. Use Disk Utility to clone the “BaseSystem.dmg” to the USB flash drive:
    1. Select the “BaseSystem.dmg” in the left-hand pane and click on the “Restore” tab. The “Source” field will be populated with “BaseSystem.dmg”.
    2. Drag the “Install Yosemite” partition under the USB flash drive to the “Destination” field.
    3. Click the Restore button and then the Erase button.
    4. The USB flash drive will be written with the contents of “BaseSystem.dmg” file. Depending on the speed of your USB flash drive, it may take several minutes or longer to complete this operation.
    5. Once complete, the “Install Yosemite” partition will be renamed to “OS X Base System”.
  5. Use the Finder to navigate to the USB flash drive. You will see two “OS X Base System” volumes in the Finder’s left-hand pane. The USB flash drive is the last one.
  6. Under the USB flash drive’s “OS X Base System” partition, open the “System/Installation” folder. You will see an alias file named “Packages”. Delete it because we will replace it with a “Packages” folder below.
  7. Use a second Finder window to open the “OS X Install ESD” volume. (To open a second Finder window, you can use the Finder menu’s “File/New Finder Window” command.)
  8. Copy the “Packages” folder from the “OS X Install ESD” volume to the USB flash drive’s “System/Installation” folder.
  9. Required for Yosemite (not required for Mavericks): Copy the “BaseSystem.chunklist” and “BaseSystem.dmg” files from the “OS X Install ESD” volume to the USB flash drive’s root “/” folder. If you don’t do this, you will get an “undefined error 0” when attempting to install Yosemite.
  10. The USB flash drive is now complete. You can use it to boot a Mac to install Mac OS X 10.10 Yosemite.
  11. Unmount all the Yosemite installer volumes by ejecting them; you must eject “OS X Base System” before “OS X Install ESD”.

Re-configure the Finder to hide system files. Run these commands in the “Terminal” app:

# Configure Finder to not show hidden system files.
defaults write com.apple.finder AppleShowAllFiles FALSE
# Close all Finder instances (and re-launch so settings take effect).
killall Finder

Boot With USB Flash Drive

To boot a Mac with the USB flash drive:

  1. Insert the USB flash drive.
  2. While holding the “option/alt” key down, turn on the Mac to display the boot Startup Manager.
  3. You should see one or two icons, one for the internal hard drive and/or another called “OS X Base System” for the USB flash drive. (The internal hard drive may not be visible if it does not have a bootable partition installed.)
    • Note: If you don’t see the USB flash drive’s “OS X Base System”, try removing and re-inserting the USB flash drive while viewing the Startup Manager screen. The USB flash drive should then appear after a few seconds.
  4. Select the “OS X Base System” and hit the “return/enter” key to boot from the USB flash drive.

Hopefully, this post will help you to create your own bootable USB flash drive installer for Mac OS X 10.10 Yosemite or Mac OS X 10.9 Mavericks.

OS X Yosemite download 10.10.1 released on November 2014 with a number of updates after the previous original Yosemite version 10.10 release. The Yosemite 10.10.1 was the most flexible operating system for the time being for Macintosh computers. Most of the Apple Mac users were shifted to this update because the update solve number of bugs on the system and it improves the reliability than the original OS X Yosemite download release.

Os x yosemite bootable usb terminal

System requirements

Aug 14, 2015 OS X Yosemite is Apple's operating system for Mac. An elegant design that feels entirely fresh, yet inherently familiar. The apps you use every day, enhanced with new features. And a completely new relationship between your Mac and iOS devices. OS X Yosemite will change how you see your Mac. And what you can do with it. Redesigned interface. Jul 05, 2019 Download Mac OS X Yosemite 10.10.3 latest free latest standalone offline bootable DMG image. The MacOS X Yosemite 10.10 is a very powerful operating system for Macintosh with better stability, security, and compatibility features.

Os X Yosemite 10.10.2 Bootable Usb Dmg File Software

Opening the dmg does produce an installer, terminal indicates this is 'Install OS X Yosemite.app' which appears consistent with the Apple usb boot installer instructions. The dmg has been packaged by inmac.org, who appear associated with quite a few mac-specific torrents. See How to make a bootable OS X 10.10 Yosemite install drive at macworld.com. Option 2 worked for me: Find the Yosemite installer on your Mac. It’s called Install OS X Yosemite.app and it should have been downloaded to your main Applications folder (/Applications). Sep 22, 2018 A DMG file, which is also known as a DMG image is a mountable disk image created for the Mac OS X. It has the raw block data normally compressed and sometimes encrypted. DMG files are often used to install OS X software that is downloaded from the internet to mount a virtual disk on the Mac PC when opened. Whereas, Mac OS X general public (non-developers) and developers can also install OS X 10.10.2 via iTunes for manual installation through Bootable USB and Bootable DVD for Free after Download OS X Yosemite 10.10.2 Final Setup / Update (Delta / Combo).DMG Files via Direct Links. Ps4 remote play dmg 10.10.5.

All the Macintosh computers that run the Mac OS X Mountain Lion are eligible for running the OS X Yosemite download 10.10.1. But if need to get the maximum of the performance please consider the system requirements mentioned below.

8GB storage

2 GB RAM

Compatible Mac Devices for the OS X Yosemite 10.10.1

iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, Mac Pro, and Xserve

  • It increases the connectivity of Wi-Fi
  • Mailing is very comfortable when you are using more than one email service providers.
  • Time machine displayed older updates. Solve the problem with the update.
  • Using Microsoft Exchange Server shows more reliable than OS X Yosemite original release.
  • Connecting to remote computers improves with the update of Yosemite.
  • Solve the problem was in the notification center widgets and actions.
  • Show the updates on Mac Apps store previously didn’t show.
  • Solve the problem courses with the Japanese language in the system.

Method one

You can download the OS X Yosemite from the Mac Apps Store


  1. First, you need to sign in to the Mac Apps store before you are going to download the OS X Yosemite.
  2. Then search for the OS X Yosemite installer from the search bar appears on the top- left the corner.
  3. You will be able to see some links for the download the file. Choose the correct link for downloading and go through the download process. ( for the downloading you must need to log in to the Apple Mac Store using the Apple ID).
  4. After the downloading complete, a window will pop up asking to install the OS X Yosemite. You can continue this process, but it is very important to remember, please keep a backup of your files and data.
  5. Or you can stop the normal installation and create a bootable USB installer with the downloaded OS X Yosemite download installer.
  6. Learn about how to create a bootable USB installer to install the Mac OS X Yosemite.

Method two

You can install the OS X Yosemite download on your Mac computer on empty volume as a clean install

Os X Yosemite Bootable Usb

This is an easy method to install the Mac OS X Yosemite. Because you are installing the OS X version on an empty volume which is no any available data on it. So you do not need to keep any backup to use. You all have to do is just clean all of the volumes on your Mac computer and install the OS freshly on it. You can use bootable USB installer for installing the Yosemite OS X version. Also, you can learn about creating a USB installer for the Google, YouTube, and websites. The Apple official website also gives information about creating a bootable installer for Mac OS installation.

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Os X Yosemite Usb Bootable 08/1

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Create Os X Yosemite Bootable Usb Flash Drive

Download the OS X Yosemite 10.11.1 update from here…