If you’re still using a Mac OS X the time will come when your computer won’t boot, or a problem may arise where you can’t take control of the device, and booting from an OS X installation media will be required.
But running off a USB drive is invariably slower than running off an internal SSD. Set your bootable USB as your startup disk for the next boot in “Apple Menu - System Preferences - Startup Disk,” then click “Restart” to reboot your Mac. Your Mac will reboot from the USB instead of your default startup disk. Download the latest version of macOS High Sierra operating system from App store. Plug your external drive into your Mac. Power up (or restart) your Mac. Press down on the Option key while the Mac boots. After a few moments, your Mac should display the Startup Manager, which.
This is why it’s recommended that you make a Mac OS X bootable USB when your Mac is in working conditions. However, if you find yourself on a scenario where your device (iMac, MacBook Pro, Air, Mac Pro or Mini) is not responding and you happen to have a Windows 10 device, then you can still be able to make a USB bootable installation media for your Mac OS X to reinstall the operating system using the Recovery Assistant.
These instructions will also work for Windows users who are running Mac OS X on a virtual machine and need to upgrade to the latest version. For instance, to OS X Yosemite.
Create A Bootable Installer For Os XRequirements
Before you dive into this guide, you’ll need a few things:
Now that you have all the necessary ingredients, you’re ready to make a Mac OS X bootable USB using the DMG file of the operating system with the steps below.
Create Mac OS X bootable USB installation media
Before you can use TransMac, you first need to partition your USB flash drive with a GPT partition, as a normal MBR partition may not work. To do this, you’ll need to use the Diskpart command-line utility on Windows 10.
![]() Setting up GPT partitionHow To Download Mac Os Usb Bootable Recovery Tool
Use these steps to set up a USB drive with a GPT partition:
After you complete the steps, the USB flash drive from MBR to GPT format, you can use the steps below to create a bootable USB installation media to install Mac OS X.
Create USB install media![]()
Use these steps to create a bootable media to install Mac OS X:
Once your bootable USB installation media is ready, remove it and insert it into your Mac, power it on, holding down the Option key, and select the USB you just created to reinstall Mac OS X.
If you’re having issues trying to create a bootable media, you can get a USB flash drive that comes with Mac OSX ready to install.
And while users historically would pop a boot media disk into their DVD or CD drive, many computers no longer come with optical disk drives. As a result, booting from USB media is becoming the standard.
How you start that rescue media can vary depending on the operating system you are using, but there are a few general guidelines that can help get your machine started, regardless of the OS you prefer. So if your system is unstable, you need to run a diagnostic tool on the hard drive, or you just want to load a Linux desktop just to see what it’s all about, let’s look at how you start your machine using rescue USB boot media. How to boot a Mac from USB media
Getting your Mac to load from a USB drive is fairly straightforward.
Bootable Usb Mac Os Sierra
NOTE: Have multiple USB devices connected to your Mac? Don’t worry. The Startup Manager only lists drives that include bootable content.
Boot from USB: Windows
Starting your PC using USB rescue media is not difficult, although it first requires an adjustment in the BIOS (Basic Input Output System). That’s because the BIOS settings include the boot sequence the machine follows when starting up. The boot order tells the machine which devices to search for the software needed to launch the computer and the priority each device in that search.
If you’re booting from USB media, you must change the BIOS boot order so the USB device is listed first. Otherwise the computer will load from the hard drive as normal. Start by plugging the thumb drive into a USB port. Then to change the BIOS boot sequence: How To Download Windows 10 Iso Bootable Usb On Mac Os Macbook Pro
In the future, your computer will first check the USB port for boot media when starting up. That won’t be a problem, since the BIOS will move to the next device in the boot sequence .. unless you keep the boot media in the USB port. Then the system will launch from that device every time.
Linux USB Boot Process
To boot Ubuntu from USB media, the process is very similar to the Windows instructions above.
Creating USB boot media
Regardless of the operating system you are using, booting your machine from USB media does not need to be difficult. A general understanding how your system loads can provide the basics needed to understand what is going on when you use boot media.
Creating USB boot media doesn’t need to be difficult either, although there are several options to consider. For Mac users, we recommend visiting Apple’s support page on USB boot media. It provides guidance that is specific to the iteration of OS X you are running (i.e. Sierra, High Sierra, Yosemite, etc.) to help you get the boot version you need. Windows and Linux users might consider Acronis Disk Director 12, which includes an intuitive Boot Media Builder that streamlines the process and offers tremendous flexibility for the type and kind of boot media you can create, including WinPE media. Comments are closed.
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December 2020
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