POnfri

Q: Unable to boot MacBook 2015 from external drive.

Hi,

 

I have bought a Anker Type-c hub which has an ethernet, and 3 USB-3 ports. No charging port.mHere is how i'm attempting to boot.

 

1 - Shutdown the System

2 - Plugin the Hub and a seagate external drive on which i have 3 boot partitions on (10.8.5, 10.9.5,10.10.3)

3 - Hold Option Key and boot into he boot select menu

4 - I select the 10.10.3 drive to boot from and have also tried 10.9.5

5 - It goes to a grey screen with the famous circle with slash across screen and never boots to the external drive :-(

 

Any help would be highly appreciated.

 

Thanks

MacBook, OS X Yosemite (10.10.2)

Posted on Jul 18, 2015 5:27 AM

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Q: Unable to boot MacBook 2015 from external drive.

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  • Helpful answers

  • by The hatter,

    The hatter The hatter Jul 18, 2015 8:11 AM in response to POnfri
    Level 9 (60,935 points)
    Jul 18, 2015 8:11 AM in response to POnfri

    Directly connect the drive. Then you know the drive works but the hub likely does not.

     

    Used CCC to create the system? great program for cloning and a must have for backup to have working systems.

  • by POnfri,

    POnfri POnfri Jul 18, 2015 10:06 AM in response to The hatter
    Level 1 (3 points)
    Jul 18, 2015 10:06 AM in response to The hatter

    Im suspecting the Hub but the drive is USB and can't be directly connected. The system came already loaded with the OS. I usually boot into and external OS X and then just make an image. Its the most efficient way for what i do.

     

    Do you know if Apple will be making a hub that has charging , Network and USB ports for this thing?

  • by The hatter,

    The hatter The hatter Jul 18, 2015 11:34 AM in response to POnfri
    Level 9 (60,935 points)
    Jul 18, 2015 11:34 AM in response to POnfri

    hubs often do not work but to directly use it would mean a simple USB-C to USB adapter. Apple or Amazon has that. There is also $79 Apple adapter with three ports for video, hdmi and usb. You can use 3rd party, it may feel safer not to and you should always regardless check comments.

     

    The support page has most of the help and answers you need.

    http://www.apple.com/support/macbook/accessories/

     

    Ports and adapters for your MacBook (Retina, 12-inch, Early 2015) - Apple Support

     

    Using the USB-C port and adapters on your MacBook (Retina, 12-inch, Early 2015) - Apple Support

     

    Use the USB-C port to connect USB-C devices, or use a USB-C adapter to connect displays and other standard USB devices. With an adapter you can connect:

    • HDMI and VGA displays, TVs, and projectors
    • Other USB devices such as iPhones, iPads, and iPods for charging and syncing
    • Other USB devices such as cameras, hard drives, and thumb drives for transferring data

     

    USB-C to USB Adapter

     

    The Apple USB-C to USB Adapter lets you use any standard USB (USB-A) device or hub with your MacBook. It provides data transfer and power to USB-A devices. For example, you can use this adapter to connect your MacBook to these devices:

    • Portable flash drive
    • Hard drive
    • Digital camera
    • Powered USB 3 hub
    • USB to Ethernet Adapter
    • Lightning to USB Cable for charging and syncing your iPhone, iPad, or iPod touch

     

    The USB-C to USB Adapter supports data transfer at up to 5 Gbps (USB 3.1 Gen 1).

     

    This adapter requires no power to operate. However, devices that you plug into it might draw power from your MacBook, so you should disconnect it when you're not using it.

     

     

    https://support.apple.com/en-us/HT204303

  • by Lanny,

    Lanny Lanny Jul 18, 2015 10:57 PM in response to POnfri
    Level 5 (7,900 points)
    Desktops
    Jul 18, 2015 10:57 PM in response to POnfri

    A 12" MacBook would not be able to boot from an OS X version older than Yosemite. They shipped with Yosemite.

     

    It's not going to boot from your Mountain Lion or Mavericks partitions, but it should be able to boot from your external's Yosemite partition.