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IMac (27-inch, Mid 2010) iMac (21.5-inch & 27-inch, Mid 2011) iMac (21.5-inch, Late 2011) iMac (21.5-inch & 27-inch, Late 2012) Note: The Boot Camp Assistant can also be used to download the Window Support Software. Look for the 'Action' pulldown on the Boot Camp Assistant menu bar. Same Problem Here. No boot to USB or CD. Finally I just changed the Hard Drive which was a Seagate Barracuda 7200.12 1TB. These are know to have firmware issues. There is an update you can do if you go to the seagate website and download an iso and burn to CD. USB, being cross-platform, has allowed Macintosh users to select from a large selection of devices marketed for the Wintel PC platform, such as hubs, scanners, storage devices, USB flash drives, and mice. After the iMac, Apple continued to remove older peripheral interfaces and floppy drives from the rest of its product line. S iMac was the first mainstream product with USB and the iMac's success popularized USB itself. Following Apple's design decision to remove all legacy ports from the iMac, many PC manufacturers began building legacy-free PCs, which led to the broader PC market using USB as a standard. Every iMac features two superfast Thunderbolt 3 (USB-C) ports and four USB-A ports, giving you plenty of high-performance options for connecting external drives, cameras, displays, and more. All iMac models come with a 1Gb Ethernet port, and now you can configure the 27‑inch iMac with 10Gb Ethernet for up to 10 times the throughput of the.

What you need to install Windows 10 on Mac

  • MacBook introduced in 2015 or later
  • MacBook Air introduced in 2012 or later
  • MacBook Pro introduced in 2012 or later
  • Mac mini introduced in 2012 or later
  • iMac introduced in 2012 or later1
  • iMac Pro (all models)
  • Mac Pro introduced in 2013 or later

The latest macOS updates, which can include updates to Boot Camp Assistant. You will use Boot Camp Assistant to install Windows 10.

64GB or more free storage space on your Mac startup disk:

  • Your Mac can have as little as 64GB of free storage space, but at least 128GB of free storage space provides the best experience. Automatic Windows updates require that much space or more.
  • If you have an iMac Pro or Mac Pro with 128GB of memory (RAM) or more, your startup disk needs at least as much free storage space as your Mac has memory.2

An external USB flash drive with a storage capacity of 16GB or more, unless you're using a Mac that doesn't need a flash drive to install Windows.

A 64-bit version of Windows 10 Home or Windows 10 Pro on a disk image (ISO) or other installation media. If installing Windows on your Mac for the first time, this must be a full version of Windows, not an upgrade.

  • If your copy of Windows came on a USB flash drive, or you have a Windows product key and no installation disc, download a Windows 10 disk image from Microsoft.
  • If your copy of Windows came on a DVD, you might need to create a disk image of that DVD.

How to install Windows 10 on Mac

To install Windows, use Boot Camp Assistant, which is included with your Mac.

1. Check your Secure Boot setting

Learn how to check your Secure Boot setting. The default Secure Boot setting is Full Security. If you changed it to No Security, change it back to Full Security before installing Windows. After installing Windows, you can use any Secure Boot setting without affecting your ability to start up from Windows.

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2. Use Boot Camp Assistant to create a Windows partition

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Open Boot Camp Assistant, which is in the Utilities folder of your Applications folder. Follow the onscreen instructions.

  • If you're asked to insert a USB drive, plug your USB flash drive into your Mac. Boot Camp Assistant will use it to create a bootable USB drive for Windows installation.
  • When Boot Camp Assistant asks you to set the size of the Windows partition, remember the minimum storage-space requirements in the previous section. Set a partition size that meets your needs, because you can't change its size later.

3. Format the Windows (BOOTCAMP) partition

When Boot Camp Assistant finishes, your Mac restarts to the Windows installer. If the installer asks where to install Windows, select the BOOTCAMP partition and click Format. In most cases, the installer selects and formats the BOOTCAMP partition automatically.

4. Install Windows

Unplug any external devices that aren't necessary during installation. Then click Next and follow the onscreen instructions to begin installing Windows.

5. Use the Boot Camp installer in Windows

After Windows installation completes, your Mac starts up in Windows and opens a ”Welcome to the Boot Camp installer” window. Follow the onscreen instructions to install Boot Camp and Windows support software (drivers). You will be asked to restart when done.

Boot From Usb On Imac
  • If the Boot Camp installer never opens, open the Boot Camp installer manually and use it to complete Boot Camp installation.
  • If you have an external display connected to a Thunderbolt 3 port on your Mac, the display will be blank (black, gray, or blue) for up to 2 minutes during installation.

How to switch between Windows and macOS

Restart, then press and hold the Option (or Alt) ⌥ key during startup to switch between Windows and macOS.

Learn more

If you have one of these Intel-based Mac models using OS X El Capitan or later, you don't need a USB flash drive to install Windows:

  • MacBook introduced in 2015 or later
  • MacBook Air introduced in 2017 or later3
  • MacBook Pro introduced in 2015 or later3
  • iMac introduced in 2015 or later
  • iMac Pro (all models)
  • Mac Pro introduced in late 2013 or later

To remove Windows from your Mac, use Boot Camp Assistant, not any other utility.

For more information about using Windows on your Mac, open Boot Camp Assistant and click the Open Boot Camp Help button.

1. If you're using an iMac (Retina 5K, 27-inch, Late 2014) or iMac (27-inch, Late 2013) or iMac (27-inch, Late 2012) with a 3TB hard drive and macOS Mojave or later, learn about an alert you might see during installation.

2. For example, if your Mac has 128GB of memory, its startup disk must have at least 128GB of storage space available for Windows. To see how much memory your Mac has, choose Apple menu  > About This Mac. To see how much storage space is available, click the Storage tab in the same window.

3. These Mac models were offered with 128GB hard drives as an option. Apple recommends 256GB or larger hard drives so that you can create a Boot Camp partition of at least 128GB.

Critical Requirements

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What you need:

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  • 20 minutes for USB installer creation.
  • To create the USB installer: a PC, Mac or Chromebook running the Chrome browser.
  • An 8GB (or greater) USB stick

In order to function properly, CloudReady needs to communicate with several Neverware services. Every Neverware service communicates via https traffic on port 443, with the exception of final download of update payloads, which are signed and validated after download.

You can see the current list of required URLs and test your ability to connect to them here or below:

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  • Unlike other network services and interactions listed above, CloudReady's update payloads are downloaded via http. This allows caching and peer-to-peer updates to be possible.
  • Like Chrome OS, CloudReady supports peer-to-peer updates. P2P can be disabled by blocking multicast DNS (mDNS) on your local managed networks.
  • CloudReady requires the ability to send https traffic to many Google endpoints in addition to the list above. If you are not already successfully using Chromebooks, you may want to reference:
    - Google's support articles on preparing your network for Chrome devices
    - Google's Enterprise Networking for Chrome Devices guide
    - Google's Networking Best Practices for Large Deployments guide.
  • Transparent inline proxies and other SSL filtering can create significant issues with Neverware and Google network interactions. If you use a tool like this, make sure to add the above Neverware URLs and Google's URLs to your SSL hostnames whitelist.
  • Chromebooks and CloudReady devices update every 6 weeks and in some cases may add or change their network dependencies. Neverware will contact customers in the event of a major change, but you can refer to the links and information above for an always up-to-date list of dependencies.


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If you're unable to resolve networking issues on CloudReady, contact support.

Every computer is different, and many require specific steps to successfully install CloudReady.

Please check that your computer model is on our Certified Models List before proceeding. Click on the 'details' link of any model for specific notes and information about installing and using that device. If your model is not on the list, there is a good chance that it will still work with CloudReady. However, uncertified models may have unstable behavior, and our support team cannot assist you with troubleshooting.