Install macOS no usb dvd boot

Discussion in 'macOS' started by colinzim, Jun 23, 2017.

  1. colinzim

    colinzim MDL Senior Member

    May 14, 2007
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    If you want to re-install macOS on a running older Mac or have no usb or dvd boot option:

    Shrink boot drive by size of the macOS Install DMG. 5 or 6 gb

    Create new partition with new free space

    Restore macOS install DMG to new partition space.

    Go to preferences > startup and select your "macOS install" as startup.

    Reboot.

    Install macOS to bootable partition.

    Works on new macs, older macs and even Windozzz :)

    Tested on my mac mini G4 which has no usb boot option and Leopard over 4.7 gb dvd.
     
  2. jesuis999

    jesuis999 MDL Novice

    Jul 28, 2017
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    Hi, thanks for sharing.
    I have an old MacBook Pro (Aluminum) OS El capitan. An tried for fun to put windows on it didn't like it.
    So i tried put back a genuine DVD to restore it but get stuck, cannot turn o n the MAC anymore, i hear only the sound of the processor that's it and even the DVD doesn't get out. Any idea to resolve that issue?
     
  3. colinzim

    colinzim MDL Senior Member

    May 14, 2007
    439
    90
    10
    duplicate
     
  4. ARCIGA

    ARCIGA MDL Junior Member

    Mar 23, 2015
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    I Need to Format An Apple Mac Desktop PC With Intel Core i5 Processor, it Does Not Have A DVD Player
    Which Program Is Used To Load In USB MacOS_High_Sierra_10.13.6?
     
  5. piercekalton

    piercekalton MDL Senior Member

    Apr 2, 2010
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    This is like playing with mac floppy disks in 1986. I WAS FOUR! gimme a break. ok back to windows