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You set your Mac or Macbook which disk to start up from when more than one startup disk is connected. This works for USB drives including the NinjaStik
How to create a bootable Windows 10 USB on Mac The last release of Mac OS doesn't have the option to create a bootable USB from Bootcamp like previous versions, and it is a problem because that require uses other tools. After TransMac is installed, open it and insert your USB flash drive and when it appeared there, right-click on it and select Format Disk for Mac. Format Disk For Mac Make sure to select the USB drive to format as others are the Windows drivers so be careful. First, take a backup and then follow here.
For 2018 to 2020 Macs with the Secure Boot T2 Chip, see the 2020 Macbook Pro Boot from USB instructions. Rar terminal mac.
A “startup disk” is a volume or partition of a drive that contains a bootable operating system.
You can set your Mac to automatically use a specific startup volume, or you can temporarily override this choice at startup.
Boot Disk For Mac Os
Make A Mac Boot Disk On Windows
- From the Apple menu choose System Preferences.
- Click the Startup Disk icon in System Preferences, or choose View > Startup Disk.
- Select your startup disk from the list of available volumes.
The next time you start up or restart your computer, your Mac starts up using the operating system on the selected volume.
Temporarily change your startup disk with Startup Manager
Startup Manager allows you to pick a volume to start from while the computer is starting up.
Use these steps to choose a startup disk with Startup Manager:
- Turn on or restart your Mac.
- Immediately press and hold the Option key. After a few seconds, the Startup Manager appears. If you don’t see the volume you want to use, wait a few moments for Startup Manager to finish scanning connected drives.
- Use your mouse or trackpad, or left and right arrow keys to select the volume you want to use.
- Double-click or press the Return key to start up your Mac from the volume you selected.
If you have an optical drive connected to your computer, you can insert an installation disc to see it in Startup Manager. You can also attach FireWire or USB external hard drives that contain an operating system to add to the list of startup volumes.
Startup Manager automatically adds bootable volumes as you connect them.
Restart in OS X from Boot Camp
If you have started up your Mac in Windows using Boot Camp, you can use the Boot Camp system tray to switch your startup disk default back to OS X.
- In Windows, click the Boot Camp icon in the system tray.
- From the menu that appears, choose Restart in OS X.
Start from OS X Recovery
You can also start your Mac from OS X Recovery or Internet Recovery if your Mac was manufactured after 2011.
To start your Mac from the Recovery System, use these steps:
- Start up or restart your computer.
- Hold down the Command and R keys on your keyboard until you see the Apple logo appear onscreen.
If you don’t see a volume listed
If you don’t see the volume you want to start your computer from, check the following:
- If you’re using an external drive, make sure it’s connected and turned on.
- Make sure you’ve installed an operating system, like OS X or Windows on the drive you’re trying to start from. Volumes that don’t contain a valid operating system aren’t listed in Startup Disk or Startup Manager.
- If you’ve installed an operating system on a drive but it isn’t listed, the volume you’re trying to start from might need repair. If the volume contains OS X, start your computer from OS X Recovery and use Disk Utility to repair the volume, or reinstall OS X on the volume using the Recovery System.
- Depending on the Mac you are using and the version of OS X that is installed, the Recovery System volume (Recovery HD) might not show up in Startup Manager. Press Command-R during startup to start your Mac from the Recovery System.
For 2018 / 2019 Macbook Pro with the Secure Boot T2 Chip, see the 2018 Macbook Pro Boot from USB instructions.
It does not matter whether you use macOS or Windows 10. It’s just a matter of time until your device will refuse to start, which could happen for many reasons, including (and not limited to) file corruption, hardware failure, and buggy update. If the unexpected happens with an Apple computer, you can use a macOS bootable USB with the installation media to repair it.
This is one of the main reasons you should consider making a macOS bootable USB when your device is working properly. However, if none of your devices (MacBook, MacBook Air, MacBook Pro, iMac, Mac Pro, or Mac Mini) aren’t working when you need them the most, then you can use a PC to rescue your Apple device. You can use a Windows 10, Windows 8.1, or Windows 7 device to quickly create a USB bootable installation media to reinstall macOS Catalina or Big Sur on your Mac.
In this guide, you’ll learn the steps to create a macOS Catalina bootable USB installation on Windows 10, which you can use to reinstall or upgrade the Apple OS.
Requirements
Before proceeding, you’ll need the following:
- Broken Mac computer running macOS (version 10.12, 11, or later).
- A trial copy of the TransMac software.
- One high-quality USB flash drive with 16GB of storage.
- Copy of macOS (DMG file).
Create macOS bootable USB installation media
To create a bootable USB drive with macOS, use these steps:
- Download and install TransMac on the Windows 10 device.Quick note: This is a paid software, but it gives you a 15-day trial, which is more than enough time. (If this works for you and you want to support the developer, you can purchase the full version.)
- Connect the USB flash drive. (If you have any data on the flash drive, remember to make a backup, as everything on it will be erased.)
- Right-click the TransMac app and select the Run as administrator option.
- Click the Run button. (If you’re using the trial version, wait 15 seconds.)
- Right-click the USB flash drive, select the Format Disk for Mac option from the left navigation pane.Quick note: You want to do this before creating the bootable media because there is a good chance that the drive was formatted using a Windows device. If this is the case, the chances are that it’s using an MBR partition, and the USB drive needs a GPT partition to work on a Mac.
- Click the Yes button to format the drive on the warning message.
- Confirm a name for the drive. For example, “macOS bootable USB.”
- Click the OK button.
- Click the Yes button.
- Click the OK button.
- Right-click the USB flash drive and select the Restore with Disk Image option from the left navigation pane.
- Click the Yes button to confirm the erase of the USB flash drive data.
- Click the browse button on the right.
- Select the .dmg file with the macOS installation files.
- Click the Open button.
- Click the OK button.
- Click the Yes Microsoft remote desktop mac 10 7 5 download. button.
Once you complete the steps, you can now insert the USB flash drive on your Mac computer to install, reinstall, or upgrade the operating system to the latest macOS version, which can be Sierra, Catalina, Big Sur, or higher.
Create a GPT partition on USB flash drive
If the USB flash drive is not working with TransMac, it could still be a partition problem. In this case, you may need to redo the entire process again. However, this time you should use the following steps to use the Diskpart command-line utility on Windows 10 to create the appropriate GPT partition, and then follow the above instructions.
To create a GPT partition on a removable drive, use these steps:
![Boot Boot](https://www.howtogeek.com/thumbcache/2/200/5f765f40277a9cffe263695030428539/wp-content/uploads/2016/03/top-4-650x300.png)
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as an administrator option.
- Type the
diskpart
command and press Enter. - Enter the
list disk
command to view all drives connected to your computer and press Enter. - Type the
select disk
command followed the number assigned for the USB flash drive (for example,select disk 4
), and press Enter. - Enter the
clean
command and press Enter. - Type the
convert GPT
command and press Enter. - Enter the
create partition primary
command and press Enter to complete the process.
Once you formatted the USB flash drive with a GPT partition, you can use the instructions mentioned above to use TransMac to create a bootable media, but this time skip steps No. 5 through 10 and continue on step 11.
After the process completes, which can take up to an hour, connect the USB flash drive and power on your Mac holding down the Option key, select the USB drive to begin installing macOS.
![Disk Disk](https://support.apple.com/library/content/dam/edam/applecare/images/en_US/macos/macos-high-sierra-macbook-bootcamp-hero.jpg)
Making Windows Boot Disk On Mac
If you have problems creating the bootable media, you can get a USB flash drive that comes with macOS Sierra, El Capitan, Catalina, etc., on it with the link mentioned below. (I haven’t tried it personally, but it’s worth the try if nothing works.)