Enterprise administrators: Download from Apple, not a locally hosted software-update server. Download on a Mac that is using macOS Sierra 10.12.5 or later, or OS X El Capitan 10.11.6. Download on a Mac that is compatible with that version of macOS. If the installer opens after downloading, quit it without continuing installation. So Please Make Sure not to Purchase this if you don’t have a Mac System to avoid disappointment later as if you insert this bootable Drive in a Window’s PC or Laptop, you will get a Format Error Message.The installer for macOS Monterey, macOS Big Sur, macOS Catalina, macOS Mojave, or macOS High Sierra downloads to your Applications folder as an app named Install macOS. WARNING] This macOS Bootable USB Drive is only Compatible with Apple Mac Systems & it will NOT work on Window’s PC or Laptop. You can choose to erase/format the hard disk before installation – recommended. Once the start options appear on the screen, you can release the ALT key, select the Install option and follow the instructions. Restart by holding the Alt key (or Option key, depending on the keyboard model). This is the simplest possible install procedure: 1. SUPPORTED MODELS FOR MAC OS X: iMacLate 2009 or Later, MacBookLate 2009 or Later, MacBook AirLate 2010 or Later, MacBook ProMid 2010 or Later, Mac MiniMid 2010 or Later, Mac ProMid 2010 or Later Product Dimensions : 6.69 x 4.72 x 1.18 inches 0.63 Ouncesĭate First Available : September 26, 2020 Please keep in mind that shipping could take between 5-7 days for Standard shipping and 3-6 business days for Expedited. I would be glad to help you through all the necessary steps. What you see in the pictures is what you will receive! For any issues that you might have during the installation please CONTACT me for assistance (more than 30 years of experience in MAC system). 
Step 3: Upgrade your hardware, piece by piece as much as the system will accept. Step 1: Reverse any hardware upgrades and bring the machine back to its original mac approved hardware. The ideal install / upgrade would happen on an original machine.
It will work with some qualifiers: your hardware must be functional and your hardware must be as close as possible to the original mac machine approved for the system.
This USB will allow you to re-install Mac on a new SSD Hard Drive, or recover your existing version if you are having system or software failure.
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