My best guess as to why this is happening is that the installer is unhappy with the fact that I'm using a 3rd party hard drive in my Macbook. So, I'm now stuck without an idea of what to do.
#MACBOOK PRO OS X SIERRA INSTALL#
I rebooted back into the installer, and this time I was able to accept Apple's conditions and select a drive to install High Sierra on- however, the installer then fails with the message " The operation couldn't be completed. Tried some other recommend things like restoring my Hosts file to its default state and disabling SIP, no dice.Īt someone's suggestion, I booted back into El Capitan and then deleted the "ist" file from the package contents of my High Sierra usb installer. Removed the 3rd party RAM I had installed, and tried again- same issue. During this week’s Mac Geek Gab 679 we discussed how many people have emailed us asking for a macOS Sierra 10.12 installer download link and no one can seem to find one.
#MACBOOK PRO OS X SIERRA FULL#
This time, I downloaded the full 5gb+ installer from the app store and created USB install media from it, also creating an El Capitan installer for backup if I needed it.īooting from the High Sierra installer on the USB drive and attempting to install resulted in an error of "This copy of the Install macOS High Sierra.app application is damaged and can't be used to install macOS". Last night, I decided to try my hand at installing High Sierra again, not out of a desire to use the new OS so much as not wanting to be defeated.
What did end up working was erasing the hard drive with Disk Utility and reinstalling an OS over the internet (I believe it went with Mavericks or Yosemite though I upgraded back to El Capitan thereafter). Reply Helpful (3) b.driesen Level 1 (11 points) 3:49 AM in response to OGELTHORPE Thanks a lot for your answer. If it is 2010 or newer, Sierra will be the newest compatible OSX.
If it is 2009 or older, El Capitan is the newest OSX that will be compatible. In recovery mode, attempting to reinstall the OS returns an error of 'An error occurred while preparing the installation. A A1286 is a 15' MBP that can be from late 2008 through mid 2012.
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