Chosen Solution
I installed High Sierra using the dosdude patcher tool on my late 2008 MacBook Pro 17 inch. Is there anyway I could go back and reinstall El Capitan which was my original OS version. I tried downloading the installer from the App Store, but it said my Mac OSX version is too new. I also tried going into recovery mode, but it showed the circle with diagonal line through it. I also don’t use time machine. Is there anyway I could go back to El Capitan?
You’ll need to wipe the drive to then reinstall the OS from scratch. i would get an external drive prepped up with your stuff as you’ll need it to restore & boot to get Disk Utility to work.
