Dear all,
Apple recommends the Command-Option-R option as the only safe way to reinstall a Mac with El Capitan or earlier versions of macOS if you want to be sure your Apple ID doesn’t persist even after. If your Mac is a 2011 or later you can use Internet Recovery (command-option-r) to erase the hard drive and reinstall the original OS then upgrade to High Sierra from there. If you insist on using El Capitan you will need to sign into the App Store on a Mac that cannot run High Sierra and download EL Cap, then make a bootable usb installer to. Making install media with El Capitan (with access only to Recovery) Manually installing.pkg files. Making install media out of partial macOS installers (“not a valid OS installer application”) a. From the El Capitan download. Installer from Recovery/App Store (any macOS version) El Capitan installer can’t be verified. Yes, it should work just fine. The only reason Snow Leopard needs the DVD is because the Recovery is not built-in. Lion through El Capitan has the Recovery built-in, and it will reinstall OS X using whatever current version you are on.
Another way that would also result in data loss is to use Internet Restore to reinstall Mac OS X, which downloads and tries to reinstall the original version of Mac OS X shipped with your Mac. Neither of these other approaches is covered in this article, but you can learn to clean El Capitan here or clean the Mavericks here.
I’m trying to prepare a 2009 MacBook Pro (my first Mac) for a friend who would take it for himself since neither AppleStore nor Brightstar wanted to recycle it.
I followed all steps here https://support.apple.com/it-it/HT201065 even if it can only support El Capitan 10.11.6.
After erasing the disk, I selected reinstall Mac OS X. It duly downloaded it (~40mins), then rebooted once, white screen with grey Apple appeared, charging line as well, “20 minutes remaining” followed then… big X logo of Mac OS X appeared with the writing, paraphrased from Italian:
”impossible to install Mac OS X. No valid package found. Contact your vendor. Exit installation to restart and try again”
I tried again a few times, with no improvement.
Any idea what could have happened and what I may do to solve this?
The Mac worked beautifully until I started following those instructions and tried to reinstall the OS to make it usable for my friend… it would be a pity if, after all these years of service, it would have to end like this.
Any way to bring it back to factory or to make macOS install work?
Install Os El Capitan
Thank you
El Capitan Os X Download
MacBook Pro 15″, OS X 10.11
Posted on Aug 6, 2021 2:30 PM