Install macOS no usb dvd boot

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

  1. colinzim

    colinzim MDL Senior Member

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    #1 colinzim, Jun 23, 2017
    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

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    #2 jesuis999, Jul 29, 2017
    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. sebus

    sebus MDL Guru

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    #3 sebus, Jul 30, 2017
  4. colinzim

    colinzim MDL Senior Member

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    #4 colinzim, Jul 30, 2017 (OP)
    duplicate
     
  5. ARCIGA

    ARCIGA MDL Senior Member

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    #5 ARCIGA, Nov 22, 2018
    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?
     
  6. LatinMcG

    LatinMcG Bios Borker

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    #6 LatinMcG, Nov 23, 2018
  7. piercekalton

    piercekalton MDL Senior Member

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    #7 piercekalton, Nov 24, 2018
    This is like playing with mac floppy disks in 1986. I WAS FOUR! gimme a break. ok back to windows