Boot Camp error: The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Jounraled) volume or already partitioned by Boot Camp Assistant for installing Windows.

Hi!
I am getting the error:
"The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Jounraled) volume or already partitioned by Boot Camp Assistant for installing Windows."
I read up some on google, but all of them says that they have crated a partition and that is the problem, I only have the standard "Macintosh HD".
I tried to create a partition manually in disk utility but then the error message: "Partition failed with error message: Could not unmount disk."
Can anyone help me? It's driving me crazy.
Thanks.

This message, and threads like yours got asked daily for over two years, now it is only a couple times a week!!
Is it so hard to follow through? you were to have backup already, clones are best, then erase/format and restore.
Then partition.
Some have been able to use Disk Utility booted from OS X DVD or another drive, and repair the drive.
You have to use Boot Camp Assistant (99.9% anyway) to create and achieve a proper Windows Master Boot Record partition.

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The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.

The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.

nikasv wrote:
The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.
That's essentially what Solving Boot Camp partition creation problems says. What is your question?

Bootcamp 5 + 3TB HD: The startup disk must be formatted as a single Mac OS Extended (Journaled) volume

Hi all,
I installed a brand new 3TB Seagate Barracuda HD in my iMac late 2009 after read that apple provides a patch to use 3TB discs with bootcamp with 10.8.3.
I tried to install windows in my 3TB disc 4 o 5 times, reinstalling from scratch, formatting the disc from terminal, etc... I tried everything and I keep getting the same message: The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.
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Any idea will be welcome!
Ivan

Hi,
Anybody in the forum have managed to use bootcamp with a 3Tb disc?? or get any answer from Apple...
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Ivan

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I need help with boot camp. "Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again."

This message appears every time I try to partition my disk:
"Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again."
I verified my Macintosh HD disk on Disk utility and then tried to repair it, but I am unable to click the repair button.
It says it's not available because the startup disk is selected.
I don't know what to do or how to go about both these problems.
Please, any suggestions?

This message appears every time I try to partition my disk:
"Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again."
I verified my Macintosh HD disk on Disk utility and then tried to repair it, but I am unable to click the repair button.
It says it's not available because the startup disk is selected.
I don't know what to do or how to go about both these problems.
Please, any suggestions?

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Hardware Information:
          iMac - model: iMac11,2
          1 3.2 GHz Intel Core i3 CPU: 2 cores
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          ATI Radeon HD 5670 - VRAM: 512 MB
System Software:
          Mac OS X 10.6.8 (10K549) - Uptime: up 0:2:53:43
Disk Information:
          WDC WD1001FALS-40Y6A0 disk0 : (931,51 GB)
                    (null) (disk0s1) <not mounted>: 200 MB
                    Macintosh HD (disk0s2) /: 931,19 GB (894,98 GB free)
          OPTIARC DVD RW AD-5680H
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          Apple Internal Memory Card Reader
          Apple Inc. BRCM2046 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple, Inc. Keyboard Hub
                    Apple, Inc Apple Keyboard
          Apple Computer, Inc. IR Receiver
          Apple Inc. Built-in iSight
FireWire Information:
Kernel Extensions:
Problem System Launch Daemons:
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Problem System Launch Agents:
                 [failed] com.apple.Kerberos.renew.plist
Launch Daemons:
                 [loaded] com.adobe.fpsaud.plist
                 [loaded] com.microsoft.office.licensing.helper.plist
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Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).only have one disk to select and my partition map scheme is GUID partition

just bough OSX Mountain Lion, my laptop operating with v10.6.8. Can't install OSX Mountain Lion, on the disk selection screen i cant select the Macintosh HD to install OSX giving a message (This disk cannot be used to start up your computer).only have one disk to select and my partition map scheme is GUID partition table. 24.44gb disk available.

Verify your computer can run Mountain Lion:
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
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         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
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         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
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To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Open Disk Utility and verify the drive is partitioned using GUID and formatted Mac OS Extended, Journaled. If it is then do this:
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Now try installing Mountain Lion.

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How to downgrade from windows 8 enterprise to windows 7 enterprise under volume license? and what are the steps for installing windows 7 enterprise?

The link provided by v-yamliu works good.
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http://technet.microsoft.com/en-us/library/dd919179(v=ws.10).aspx
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Balaji Kundalam

Odd problem with partitioning the disk-- it says it needs to be a single Mac OS Extended (Journaled) volume, but it already is? (Screenshots in post)

I have a 1 TB Macbook Pro running Mavericks.
My disk is a single-volume...
Here is the information on my disk:
And I'm trying to use boot camp assist to partition my disk, like this:
But when I do, I get this error message:
"The disk cannot be partitioned because some files cannot be moved. Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again."
It already is a single Mac OS Extended journaled volume. Right? Here is an image from Disk Utility:
Any ideas?

Hey there!
It sounds like you are unable to install BootCamp due to an error that your some files cannot be moved, and to format your disk as a single volume, but you have confirmed that it already is. I would verify and repair your disk permissions with the following article next, if you have already restarted your computer and tried again:
Disk Utility 12.x: Repair disk permissions
http://support.apple.com/kb/ph5821
Choose Apple menu > Software Update to make sure you have the latest version of Mac OS X.Software updates sometimes change a file’s permissions to improve security, so updating your software can solve some permissions problems.
Open Disk Utility, in the Utilities folder in Launchpad.
Select the disk you want to check.You can verify or repair permissions only on a disk with Mac OS X v10.7 Lion installed.
Click First Aid.
Do one of the following:
Click Verify Disk Permissions to test permissions.
Click Repair Disk Permissions to test and repair permissions.
Disk Utility repairs the permissions for files installed by the Mac OS X Installer, Software Update, or an Apple software installer. It doesn’t repair permissions for your documents, your home folder, or third-party applications.
If that does not resolve the issue, I would next verify and repair the disk with this:
Disk Utility 12.x: Repair a disk
http://support.apple.com/kb/PH5836
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Take care,
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Boot Camp error: The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Jounraled) volume or already partitioned by Boot Camp Assistant for installing Windows.

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