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Mac Not Showing In Boot Camp Startup Disk

In Windows on your Mac, do one of the following: Restart using Startup Manager: Restart your Mac, then immediately press and hold the Option key. Restart using Boot Camp Control Panel: Click in the right side of the taskbar, click the Boot Camp icon, then choose Restart in macOS. This is not intend to be a guide at all, but instead, is just what I did to get dual boot with OpenCore. Pls, feel free to advise if theres any wrong, Ill be much thankful. PREREQUISITES - (1). To cut a long story short, the Startup disk is showing as missing. I tried all the trouble shooting and seem to be unable to identify and fix the problem. I was able to download the OS X on my external hard drive so I can operate the Mac now. But the problem has not been solved. What do I do from here to repair the disk. Feb 21, 2020  When your USB flash drive is not showing up on your Mac, the reasons might be the USB port, or USB contains errors that make the drive undetectable. So your first move is to make USB can be recognized again, and then you can use Mac. Apr 06, 2020  Choose Apple menu System Preferences, then click Startup Disk. Click the lock and enter your administrator password. Select your startup disk, then restart your Mac. This displays icons for all available startup disks and lets you override the default setting for the startup disk that is in Startup Disk preferences (OS X) or the Boot Camp control panel (Windows), without changing that setting. 1 Restart your Mac and hold down the Option key until disk.

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Boot Camp Control Panel User Guide

You can set the default operating system to either macOS or Windows. The default operating system is the one you want to use when you turn on or restart your Mac.

Set the default operating system

  1. In Windows on your Mac, click in the right side of the taskbar, click the Boot Camp icon , then choose Boot Camp Control Panel.

  2. If a User Account Control dialog appears, click Yes.

  3. Select the startup disk that has the default operating system you want to use.

  4. If you want to start up using the default operating system now, click Restart. Otherwise, click OK.

You can’t change your startup volume to an external FireWire or USB drive while you’re using Windows.

To learn how to change the default operating system using macOS, see Get started with Boot Camp.

Restart in macOS

In Windows on your Mac, do one of the following:

  • Restart using Startup Manager: Restart your Mac, then immediately press and hold the Option key. When the Startup Manager window appears, release the Option key, select your macOS startup disk, then press Return.

    If you’re using a portable Mac with an external keyboard, make sure you press and hold the Option key on the built-in keyboard.

  • Restart using Boot Camp Control Panel: Click in the right side of the taskbar, click the Boot Camp icon , then choose Restart in macOS.

    This also sets the default operating system to macOS.

For more information about restarting in macOS, see the Apple Support article Switch between Windows and macOS.

See alsoGet started with Boot Camp Control Panel on MacTroubleshoot Boot Camp Control Panel problems on MacApple Support article: How to select a different startup disk

By default, your Mac starts up from its built-in hard disk, but a startup disk can be any storage device that contains an operating system compatible with your Mac. For example, if you install macOS on an internal or external drive, your Mac can recognize that drive as a startup disk. You can then follow the steps in this article to start up from it.

Use Startup Disk preferences

When you use Startup Disk preferences to select a startup disk, your Mac starts up from that disk until you choose a different one.

  1. Choose Apple menu  > System Preferences, then click Startup Disk.
  2. Click the lock and enter your administrator password.
  3. Select your startup disk, then restart your Mac.

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

Use Startup Manager

When you use Startup Manager to select a startup disk, your Mac starts up from that disk once, then returns to using the disk selected in Startup Disk preferences.

  1. Press and hold the Option (Alt) key immediately after turning on or restarting your Mac.
  2. Release the Option key when you see the Startup Manager window.
    If your Mac is protected by a firmware password, you can release the key when you're asked to enter the password.
  3. Select your startup disk, then click the arrow under its icon, or press Return.
    If you press and hold the Control key during this step, your selection is saved in Startup Disk preferences, so it persists until you change it.

Mac Not Showing In Boot Camp Startup Disk Replacement

If your Mac is using OS X Lion 10.7.3 or later, you can also use this method to start up from your Time Machine backup disk. Startup Manager identifies your Time Machine backup as ”EFI Boot.”

If you can't select your startup disk or start up from it

Check for these possibilities if you can't see your disk in Startup Disk preferences or Startup Manager, or your Mac won't start up from it.

Check for a compatible operating system on the startup disk

Make sure that your startup disk is using a version of macOS that is compatible with your Mac.

To start up from an external disk with macOS Catalina 10.15 or later, the disk must connect via USB-A, USB-C, or Thunderbolt, not FireWire.

Download Boot Disk For Mac

Check startup security settings

Mac Not Showing In Boot Camp Startup Disk Free

If you're using a Mac that has the Apple T2 Security Chip, check the settings in Startup Security Utility. These settings determine whether your Mac can start up from another disk.

Check for Option ROM firmware

If you're in Startup Manager and can't see a third-party startup disk, the startup disk could be using Option ROM firmware. To enhance system security, Mac computers with up-to-date software don’t show devices that use Option ROM firmware until you load their firmware. To do that, press Option-Shift-Command-Period while in Startup Manager. If your startup disk appears, do that each time you want to start up from it or from another disk connected to it.

If you're using a firmware password, the ability to load Option ROM firmware is disabled as an additional security protection.

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