Formatting my Macbook

Discussion in 'MacBook Pro' started by MrMoris, Jul 20, 2017.

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  1. MrMoris, Jul 20, 2017

    MrMoris macrumors newbie

    MrMoris

    Joined:
    Nov 24, 2015
    #1
    Hey,

    I have the latest Macbook Pro with the Retina.
    I would like to format my Macbook Pro and to have it as I just received it. How can I do it? I tried inserting the OSX Sierra installation I have on my USB and it displays an X sign when I try to boot it. What can I do?


    Thanks!
     
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  2. Cergman, Jul 20, 2017

    Cergman macrumors 6502a

    Cergman

    Joined:
    Jan 1, 2013
    Location:
    my tesla
    #2
    Restart the mac, and hold command r immediately after you hear the boot chime. Then you can reinstall from there without needing the USB.

    What utility did you use to create the USB?
     
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  3. treekram, Jul 20, 2017

    treekram macrumors 68000

    Joined:
    Nov 9, 2015
    Location:
    Honolulu HI
    #3
    If you have the 2017 MBP, a standard 10.12.5 installer won't work. You would need to use the Internet Recovery install (as mentioned by Cergman) or you need to do a new download (10.12.6 was just released yesterday - I'm presuming they now have the new hardware drivers in 10.12.6). The new MBP's had a custom install of 10.12.5 since it was introduced after 10.12.5 was released.

    If you're looking to go back to a fresh install of the custom 10.12.5 version, unless you have a backup copy taken right after you got your MBP, I think that will be difficult to do.
     
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