MBP 2012 won’t reinstall OS via recovery mode and bootable USB key created from Windows aren’t detected
Greetings,
The question is regarding a MBP 2012 model A1286 / MBP 9.1 / Order MD104LL/A .
The hard drive was zeroed via Ubuntu and the MBP boots to a flashing folder with a question mark. Booting into recovery mode offers to reinstall Lion. After setting the clock with ntpdate -u time.apple.com , since the battery is faulty, I managed to reach the point where the OS reinstallation would connect with the Apple servers, but it then produces the following error message: “Can’t download the additional components to install Mac OS X”.
1. Why this error message occurs?
The hard drive which has been manually replaced for a SSD has been “erased” via Disk Utility (in recovery mode) to Mac OS Extended (Journaled) and has been partitioned to the same (Mac OS Extended (Journaled)). No APFS format exists under Lion recovery mode; format which I red was for SSD only…
Also, I couldn’t boot from bootable USB key to reinstall the OS, when holding alt / option at startup, as the bootable USB keys aren’t detected. The USB keys were created under Windows (and had their partition table set to GPT). I used TransMac and DMG2ISO to create the bootable USB key and the Sierra and El Capitan .dmg available for web browser download from: How to download and install macOS - Apple Support . (The MBP has no firmware password preventing from booting from external device).
2. How can I reinstall the OS at this point?
I haven’t tried archive.org .dmg / .iso as I can’t be sure the files weren’t edited.
Thanks in advance,
Best regards,
B
MacBook Pro 15″