It is completely free and no need to download additional software for this purpose.įirst, download macOS from Mac App Store. This is the most reliable way to make bootable macOS installer on Mac as it is backed by Apple. Create a Bootable Installer for macOS with Official App In addition, it is also possible to make a bootable macOS installer from DMG file. And Apple provides an official tool to create bootable USB installer from macOS installation app with the help of Terminal command, which is totally free. MacOS is the native operating system for all Mac computers. Create a Bootable Installer for macOS on Mac The other is macOS dmg file, which is made by third-party developers or system administrators. One is the official macOS installation app, which is only available from Mac App Store. Reinstall macOS on Mac from Bootable Installerīefore getting started, you should know there is only two types of installation media for macOS. Create a Bootable Installer for macOS on Windows PC Two more points you'll want to place some electrical tape on the upper case where the cable crosses as the cable tends to abrade against the rough aluminum. Yes! This is the part you want! The older part is not as well engineered. Here is the IFIXIT guide you'll need to follow: MacBook Pro 15" Unibody Late 2011 Hard Drive/IR Sensor Cable Replacement and you'll want this newer version of the part: MacBook Pro 15" Unibody (Mid 2012) Hard Drive Cable - Apple P/N 923-0084. This is important if you've upgraded the drive to a SSD.
You also may want to replace the HD SATA cable as this series had issues with it. In the case of El Capitan you need to manually back wind the year to 2013 as the installer has an end date which will give this error.
Double check the date is now manually set (make a new folder and check its creation date) Manually set it and then reboot your system. Here we want the year for Sierra to be last year (2016). Are you using Apples Time server or manually setting it? You'll get the error like this if the date is incorrect (month & year).
You'll need to check your date setting within Prefs. So if you try installing an older OS release when a newer one is out you need to back wind the date to the year the OS was introduced Apple is being very sneaky!! To help push people to the newer OS's they have a time bomb in the OS installer.
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