So would like to share here hope can help anyone who has similar case as mind. My situation was a bit different from you guys but I managed to solve it. Video of El Capitan Internet recovery issue: I have tried installing using a different USB port. I have used the El Capitan installer terminal set the correct system time. I use the installer Disk Utility to format the Macintosh HD partition. The computer is a mid-2015 15" MacBook Pro. The computer does have Windows 10 installed on to a Bootcamp partition, and that seems to work fine. I'm guessing there's no restore partition. The second Apple support guy I talked to said to do a regular restore (CMD+R), but it always goes to internet recovery. It just keeps doing that for hours and hours. The count-down timer gets to 0, then goes back up to ~30 minutes. The problem there is it tries to install El Capitan, but never completes. The first Apple support guy I talked to said to do an internet recovery. I have tried recreating the installer USB stick with a fresh download. This leaves the computer without a bootable version of macOS. To ensure that everything goes smoothly, we'll take the extra step of deleting your existing partition before installing macOS.I've tried doing a clean install of Sierra multiple times, and every time, the installer gets to the end and then shows the message "The installer payload failed signature check". Once your installation files have been copied, it's time to install macOS from scratch. Once you hit Enter, you'll need to enter your admin password to approve the command, and then hit "Y" on your keyboard to confirm that you're OK with the contents of the USB drive being overwritten. Here's another example that creates a macOS High Sierra install USB on a drive named "MacOS Installer": sudo /Applications/ Install\ macOS\ High\ Sierra.app/ Contents/Resources/createinstallmedia -volume /Volumes/MacOS\ InstallerĬommand to list all connected volumes, which will include your USB installation medium in case you need to check the label. For example, "Install macOS High Sierra.app" would become Install\ macOS\ High\ Sierra.app Be aware that any spaces will need to be preceded by a backslash. You can change various parts of this command to suit your own circumstances, with the main one being the name of the installer. Sudo /Applications/ Install\ macOS\ Big\ Sur.app/ Contents/Resources/createinstallmedia -volume /Volumes/macos_installer You can find out which Mac you have by clicking on the Apple logo in the top-left corner and selecting "About This Mac" to see the name and year of release. If you're not sure what your Mac came with, head to Apple Support and search for your exact model. Your Mac's "earliest" supported version of macOS is the one that it came with. Older versions were written for Intel chips, which use the x86_64 instruction set, while the newer Apple Silicon chips use the ARM instruction set. It's common knowledge that new macOS releases often drop support for older hardware, but the same is true for newer Mac models and older software, too.įor example, you cannot install any version of macOS prior to Big Sur (released in 2020) on a Mac with an Apple Silicon chip, including the M1. It's important to understand that not all versions of macOS (or Mac OS X) work with all hardware configurations. While the process is pretty straightforward, getting your hands on older releases of macOS isn't so easy.
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