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How Make Bootable Usb Mac

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  • Confirm the BIOS boot sequence lists the USB drive first, or make that change as needed. After the USB flash drive is inserted into the USB port, press the Power button for your machine (or Restart if the computer is running).
  • If you want to use your USB stick with an Apple Mac, you will need to restart or power-on the Mac with the USB stick inserted while the Option/alt (⌥) key is pressed. This will launch Apple's ‘Startup Manager' which shows bootable devices connected to the machine.
  • Make sure the USB drive is connected to the Mac. Next, click on the Apple logo from the top left and choose Restart. When you hear the startup sound or see the Apple logo, immediately press and hold the Option key. Select the bootable installer as the startup disk, and follow the instructions.
  • Using Usb bootable to install macOS for real Mac user and hackintosher. For Mac user: For Mac user your USB bootable now ready for installing fresh macOS system. To use the bootable installer on Mac, connect the volume containing the bootable installer to your Mac. Use Startup Disk preferences or Startup Manager to select U SB volume as the.

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By default, Mac starts from its built-in hard disk, but a startup disk can be any storage device that contains bootable contents that compatible with your Mac. For example, if you install macOS or Microsoft Windows on a USB drive, your Mac can recognize that drive as a startup disk. This guide provides 2 ways to boot a Mac from a USB flash drive.

Starting with Disk Drill 3, anyone can create a bootable Mac OS X drive in a matter of minutes. Make sure you have an extra storage device, which is at least 2GB in size. Connect it to any Mac, run Disk Drill and use the 'Create Boot Drive' option on the main toolbar.

Requirement

Starting up your Mac from an external disk requires the following:

  • Intel-based Mac.
  • Bootable USB thumb drive formatted with a GUID partition type and containing an OS X installer or a usable operating system.

Let's see how to boot a Mac from a bootable USB drive and what to do if your Mac doesn't start up from it.

Way 1: Boot Mac from USB Drive using Startup Manager

Getting your Mac to load from a USB drive is fairly straightforward. Use the following steps, you can easily set Mac boot from an external drive in Startup Manager, so it'll only boot from USB that one time.

Step 1: Insert the USB boot media into a USB slot.

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Step 2: Turn on your Mac (or Restart your Mac if it's already on).

Step 3: Press and hold the Option key immediately after you see the Apple logo. Holding that key gives you access to OS X's Startup Manager. Once the Startup Manager screen appears, release the Option key. The utility will look for any available drives that include bootable content.

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Step 4: Using either the pointer or arrow keys on the keyboard, select the USB drive you wish to boot from. Once selected, either hit the Return key or double-click your selection. The machine will start to boot from the USB drive.

Way 2: Set a Mac Boot from USB Drive using Startup Disk

When you use Startup Disk preferences to set Mac boot from an external drive, so it'll boot from that disk until you choose a different one. Here is how:

Step 1: Go to Apple menu > System Preference, then click Startup Disk.

Step 2: Click the locked icon and then enter your administrator password.

Step 3: Select External drive as the startup disk, then restart your Mac. How to enhance photos on mac.

What to do if your Mac does not boot from the selected drive

If you see a message prompts that your security settings do not allow this Mac to use an external startup disk, check the External Boot setting in Startup Security Utility, and then allow your Mac to use an external startup disk.

Step 1: Open Startup Security Utility.

Turn on your Mac, then press and hold Command (⌘) + R immediately after you see the Apple logo. Your Mac starts up from macOS Recovery. When you see the macOS utility window, choose Utilities > Startup Security Utility from the menu bar. When you're asked to authenticate, click Enter macOS Password, then choose an administrator account and enter its password.

Step 2: Select 'Allow booting from external media'.

If you want to select an external startup disk before restarting your Mac, quit Startup Security Utility, then choose Apple menu > Startup Disk.

Note: If you're using Boot Camp in a dual-boot Windows/OS X environment, you may be unable to boot negatively into supported versions of Microsoft Windows XP, Windows Vista or Windows 10 operating systems installed on external USB hard drive.

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Make sure disk has been formatted with a GUID partition type

Intel-based Macs support starting from an external USB storage device's volume that has been formatted with a GUID partition type. If you wish to boot from the drive, it's important to format the partition as 'GUID Partition Table' rather than either of the other two ahead of time when you use that drive as a bootable drive.

How To Make Bootable Usb Mac

Make sure your disk is bootable

How Make Bootable Usb Mac

Volumes that aren't bootable and don't contain a copy of a valid operating system aren't listed in Startup Disk or Startup Manager. Make sure the external drive you're trying to start from contains a usable operating system.





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