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- Cant Unmount Disk Mac With Boot Camp Download
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- Couldn't Unmount Disk Mac
Learn how to use Boot Camp on an external drive and what you need for an external Windows drive, such as disk utility, terminal, boot camp assistant. Your source for expert tips, special deals, commentary, reviews, and the latest tech news. Oct 07, 2016 Have you ever tried to format a disk in Mac OS X and Disk Utility won't Unmount the Hard Drive for formatting? It can happen for external (USB and Firewire) as well as internal disks.
To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart. Keep holding until the described behavior occurs.
Cant Unmount Disk Mac With Boot Camp Download
- Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. If your Mac is using a firmware password, you're prompted to enter the password.
- Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.
If a key combination doesn't work
![Cant Unmount Disk Mac With Boot Camp Cant Unmount Disk Mac With Boot Camp](/uploads/1/2/6/2/126245866/985177874.png)
Cant Unmount Disk Mac With Boot Camp Windows 10
If a key combination doesn't work at startup, one of these these solutions might help:
- Be sure to press and hold all keys in the combination together, not one at a time.
- Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
- Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.
- If you're using a wireless keyboard, plug it into your Mac, if possible. Or use your built-in keyboard or a wired keyboard. If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
- If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.
Remember that some key combinations are disabled when your Mac is using a firmware password.
Learn more
Cant Unmount Disk Mac With Boot Camp Windows 7
- Learn what to do if your Mac doesn't turn on.
- Learn about Mac keyboard shortcuts that you can use after your Mac has started up.
Couldn't Unmount Disk Mac
I have a 500gb mac drive, with a windows bootcamp partition on it. After using windows for a while, I would always get an error message saying 'Macintosh drive may be damaged. Mount anyway? To which I would always click yes.
Today I tried to upgrade to mountain lion. So I booted into lion, ran mountain lion, and after installing and restarting, I was taken to a sort of recovery window, asking me where I wanted to install lion. All I saw were my 650mb recovery drive and my bootcamp drive, both locked. I didn't see my macintosh partition.
So I went into my recovery partition and ran disk utility. What I see in my disk utility from recovery:
>500.11 GB
>Macintosh HD (Greyed out, repair failed)
>Bootcamp (not greyed out)
Macintosh drive is greyed out. Tried verifying/repairing. Couldn't repair. Tried erasing the whole drive (500.11GB). I get 'could not unmount drive'. I think it is unable to unmount my bootcamp drive?
So I basically cannot boot into osx itself (because I just get to the install osx screen and my macintosh drive, where I want to install osx, isn't even showing up), and I also cannot do anything from my recovery partition. I tried both erase and partition options in disk utility. Right now I am only able to boot into windows which is where I am posting this from. I cannot use a flash drive recovery method either because I can't even run the .dmg on windows. Anyone know how I can restore/erase my drive completely?
Thanks.