Mac pro 1,1 upgrade to 4,1 - mlpostfactor

Discussion in 'OS X Yosemite (10.10)' started by Sebct, Jun 12, 2017.

  1. Sebct macrumors regular

    Dec 18, 2010
    London, UK.
    Hi all,

    Not entirely sure where to post this but this seems where the threads on mlpostfactor are.

    I've just purchase a mac pro 4,1 and want to my existing SSD that was in the mac pro 1,1 as the boot drive (Yosemite installed using mlpostfactor).

    Is it possible to remove the post factor files and just have it as a standard yosemite install without losing my files.

    When i put it in the 4,1 mac pro it just boots into OSX utilities.

    Could i just install a fresh copy of MacOS over the top?


  2. parrotgeek1 macrumors 6502

    Jun 14, 2016
    CA, USA
    replace /System/Library/CoreServices/boot.efi on the disk with one from a non-hacked Yosemite and it will boot
  3. jbarley macrumors 68040


    Jul 1, 2006
    Vancouver Island
    parrotgeek1's suggestion will work but your own idea of installing Yosemite over top works as well.
    Word of caution, make sure to make the right install selection...(keep all existing files).

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