Hi everyone,
I’m posting this because I haven’t found any existing post describing this exact issue, and I’ve already tried a lot of things before writing this post.
I’m trying to create a macOS Mojave (10.14.6) installer USB using OpenCore Legacy Patcher, but the process always fails with Killed: 9, no matter what I do.
I’ll attach a screenshot of the error.
Target Mac (the one I want to install Mojave on)
MacBook Pro 17-inch Mid 2009
CPU: Intel Core 2 Duo
GPU: NVIDIA GeForce 9600M GT and 9400 m
RAM: 8 GB (upgraded)
Storage: 256 GB SATA SSD (upgraded)
Original HDD removed, and there was no macos installation on it because i ve kinda messed up in the past with, ending up installing windows 10 then linux mint on it, with no macos leftovers, but that was years ago.
Machine is fully functional (USB boot, disk detection, etc.)
My goal OS:
macOS Mojave 10.14.6 (tried to install high sierra with high sierra patcher but got an error too will trying to create it)
Host Mac (used to create the installer)
MacBook Pro (Apple Silicon M1)
macOS Tahoe (latest)
USB-C only (using USB-C → USB-A adapter, tested with different adapters and different USB Disks)
What I’m trying to do
Create a bootable Mojave USB installer
Using OpenCore Legacy Patcher (latest version)
Then boot the 2009 MBP via OpenCore and install Mojave
What i ve tried
Firstly, created a bootable OS X El Capitan USB successfully after downloading .app file with Mist
Installer launches correctly on the target Mac
Installation fails with “This copy of the installer cannot be verified”
Tried all known date workarounds from Recovery:Setting system date back to 2016 / 2017 / 2018 Installing completely offline Disabling SIP
Even with the correct date and no network, El Capitan still refuses to install
Then, while using High Sierra Patcher (failed) :
Installer image is restored correctly to the USB key
During the next step (copying System/Installation/Packages), the process fails
Errors encountered:
cp: /Volumes/USB/... No such file or directory
This happens consistently, even after:
Fully erasing the USB (GPT + HFS+) multiple times, with terminal and disk utility
Launching the patcher from /Applications (not from the DMG)
Ejecting all mounted images
Rebooting the host Mac
Finally, with OCLP :
Using gibMacOS to download and build the Mojave installer (.app)
Installer download and creation attempts (chronological)
First, I tried downloading macOS Mojave using Mist on my Apple Silicon Mac.
The Mojave download failed and never completed successfully.
I then tried OpenCore Legacy Patcher (OCLP).
Mojave did not appear in the installer list, even with “Show older versions” enabled.
After that, I used gibMacOS to download macOS Mojave.
gibMacOS successfully downloaded the full macOS Mojave 10.14.6 installer
A valid Install macOS Mojave.app (~6 GB) was created.
I then used this installer with OpenCore Legacy Patcher:
Selected Create macOS Installer
Chose Use existing macOS installer
Selected the Mojave .app
Selected the USB drive
During installer creation, the USB drive is erased and prepared correctly, but when createinstallmedia starts, the process always fails with the same error:
Killed: 9
This error happens consistently, regardless of the installer source, the usb drive, the USB A to USB C, adaptater or the USB C port used.
At this point, I’m out of ideas. I would really appreciate any input.
Thanks in advance for your help.
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