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?

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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.

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.

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.
The disc has a single 3TB Mac OS Extended (Journaled) partition, but bootcamp keep saying that is not... and doesn't allows me to install windows. I read a lot of discussions here and other communities but as I said, none solution worked for me.
Any of you could manage to fix this issue?? Is Apple aware of that problem?
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...
Regards,
Ivan

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?

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
Thank you for using Apple Support Communities.
Take care,
Sterling

Bootcamp Yosemite 10.10.1 "The startup disk cannot be partitioned or restored to a single partition."

I'm trying to install Windows on my Mac via Bootcamp. I start up Boot Camp Assistant, the introduction pops up, I press continue and then I get this error message.
"The startup disk cannot be partitioned or restored to a single partition.
The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows."
So I head over to Disk Utility, the only partitions I have are Macintosh HD and EFI. I thought there might be some hidden partition, so I went into debug mode in Disk Util and there's nothing (Also used terminal, I'll put results below*). So that brings me to my current problem; it's already "formatted as a single Mac OS Extended (Journaled) volume" and I can't make it "partitioned by Boot Camp Assistant for installing Windows." because this error message prevents me from doing that. Maybe there's an easy fix, but the information provided is so unhelpful/circular it makes me want to laugh and punch something at the same time. I saw that someone fixed this problem by merging their partitions, but as I already have the minimum number of partitions so that wouldn't fix anything (unless EFI is unnecessary, which I'm fairly sure it isn't).
-Running 10.10.1 OSX Yosemite
-Trying to install Windows 8.1
diskutil list
sudo gpt -vv -r show /dev/disk0
sudo fdisk /dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            3.0 TB     disk0s2
Thanks for your help in advance ;3, I hope this is an easy fix

I had a similar issue after doing a fresh install of Yosemite. Bootcamp assistant seems to want a Core Storage scenario before it will continue.
To convert your drive use the following command in Terminal:
diskutil cs convert disk0s2
Bootcamp will then let you proceed as normal. Be warned though!
After the windows install completes you may end up with something like my situation:
https://discussions.apple.com/message/27472857?ac_cid=op123456#27472857

How to fix this error? The startup disk cannot be partitioned or restored to a single partition.

Hey guys,
I am trying to install windows 7 ultimate 64 bit via bootcamp assistant. I open bootcamp assistant from utilities and i get the second window and try to click continue and i get a pop up, saying "The startup disk must be formatted as a single Mac OS Extneded (journaled) volume or already partitioned by Boot Camp Assistant for installing Windows." I looked around on the internet, i found that my internal HD must be set to OS Extended (Journaled). I went into disk utility and i clicked partition tab and the option was set to OS extended (journaled). Any ideas on how to overcome this error so i can install windows 7?

Error is:
1: common
2: misleading and poorly worded
3: space must be:
A: contiguous, that means unfragmented and in ONE section, not multiple
B: files cannot be loced, anchored or in such a manner as to prevent or block partition operation
C: to move, unlock and shuffle files requires booting from another drive or device
Shrink the HFS+ volume by as much or more than you need to set aside to use
If that does not,
Try iDefrag from another hard drive or by burning and using its own CD that is just for consolidating free space
Clone your system (should have backups already, clone is just bootable)
Erase and restore from clone - SuperDuper does consolidate files and free space and result in unfragmented (99% success rate)
None of which has to do iwth what that error message says. This error has been almost a daily threat topic - has gotten less but has not "gone away."

Installing bootcamp, pauses and reads "Back up the disk and format it to a single Mac OS extended journaled"

I just ran disk utility as promted and checked, the main disk is already formatted to a single Mac OS extended (journaled).
It previously had parallels partitioning, it is still installed and I can't uninstall it, could this be the problem?

Siat Mauk wrote:
I just ran disk utility as promted and checked, the main disk is already formatted to a single Mac OS extended (journaled).
It previously had parallels partitioning, it is still installed and I can't uninstall it, could this be the problem?
No, Parallels does not create a partition, it's just another program.

I had formatted external HDD as Mac OS Extended(journaled) earlier, but now i want to format the same as ExFAT so that i can copy files between PC and MAC. But it is giving 'Can't unmount' error while i try to run Erase

I had formatted external HDD as Mac OS Extended(journaled) earlier, but now i want to format the same as ExFAT so that i can copy files between PC and MAC. But it is giving 'Can't unmount' error while i try to run Erase

Use the PC to reformat the drive.

If I want to install windows 8 in on my mac through boot camp, can I install windows 8 directly from my pendrive? whats the procedure?

If I want to install windows 8 in on my mac through boot camp, can I install windows 8 directly from my pendrive?
I do not have bootable CD.
whats the procedure?

Hi Rajthumar,
Welcome to the Apple Support Communities!
You can install Windows 7 or Windows 8 ISO using a USB flash drive. Please read over and reference the attached link for information on using Boot Camp to install Windows.
manuals.info.apple.com/MANUALS/1000/MA1636/en_US/boot_camp_install-setup_10.8.p df
http://manuals.info.apple.com/MANUALS/1000/MA1636/en_US/boot_camp_install-setup_ 10.8.pdf
Have a great day,
Joe

I've bought Mountain Lion but my iMac's HD isn't the correct format (Mac OS Extended(Journaled) instead of GUID partition what do I do?

Can I just back up to Time machine, then reformat disk then re down load?

As mende1 stated, the two are different and must be both.
If you open Disk Utility and select the hard drive (the type, size, and serial number), not the volume (Macintosh HD), it will tell you at the bottom of the screen what the Partition Table is. It should be GUID. If not, then you will need to back it up, then repartition the drive. Also, copy the Mountain Lion installer onto another drive so you don't have to download again. It is in the Applications folder.
There are a few methods to get back where you are, including wipe, install old OS, restore from TM, install ML.
You might search the web for a tutorial on creating a boot/install disk using the Mountain Lion installer.
Another easy way is to use something like Carbon Copy Cloner or SuperDuper to clone your current OS onto another drive. Then, boot using the external you cloned. Use Disk Utility to re-partition the internal drive as noted below, then Clone your current OS back to the internal. Then, use the installer you tucked away to reinstall.
If running Snow Leopard, you need to boot using your install disk, then open Disk Utility.
If running Lion, you need to boot into the Recovery HD by holding down cmd-r on restart.
From there, open Disk Utility, select the hard drive, then the Partition tab.
Select 1 partition from the partition layout dropdown (or however you'd like, just don't use current).
Set the Name of the disk. Macintosh HD is the norm, but you can name it anything you want.
Set the Format to Mac OS Extended (Journaled)
Click the Options Button.
Set the Partition Table to GUID Partition Table.
Back on the partition tab, click Apply.

How do I remove the Windows partition? Boot Camp Assistant does not allow me to select the remove option.

I am using an iMac, 8.1, early 2008. I installed Windows XP at that time. I am now using OS 10.8.5 and want to remove the Windows partition to free up disk space. Boot Camp Assistant does not allow me to select the "install or remove" option. How can I get rid of the Windows partition?

You can try removing it in Disk Utility.
To resize the drive do the following:
1. Open Disk Utility and select the drive entry (mfgr.'s ID and size) from the left side list.
2. Click on the Partition tab in the Disk Utility main window. You should see the graphical sizing window showing the existing partitions. A portion may appear as a blue rectangle representing the used space on a partition.
3. Select the bottom rectangle/partition. Click on the Delete [-] button below the sizing window to remove it. Click on the Apply button. Wait until the process has completed.
4. In the lower right corner of the sizing rectangle for the remaining partition is a resizing gadget. Select it with the mouse and drag it all the way down to the bottom. Click on the Apply button and wait until the process has completed.
You should now have a restored single volume on the drive.
It would be wise to have a backup of your current system as resizing is not necessarily free of risk for data loss. Your drive must have sufficient contiguous free space for this process to work.

Boot Camp - Startup disk must be formatted as single partition

Hello,
I have recently came across an issue. After reinstalling OS X, I wanted to install Windows 7. I went to the assistant, and it stated that it needed
to be formatted as one partiton. The thing is i have formatted only last night while installing os X, with the partition "Macintosh HD", as a Mac Journaled partiton. Now, when i see in disk utility, i see another partition, "Recovery HD". As a Mac owner for several years, the Recovery Partition never appears on Disk Utitliy, and now it thinks its a second partition! I have not touched the partitions since reinstalling only a couple of hours ago. Any help would be much appreaciated.

Thanks, i just deleted the recovery partition because mac has the internet recovery feature!

Plese Help. Me have FAT32 USB, ISO. Boot camp:Can't install Windows Support Software because the Software Update Server "(null)" can't be found. It asks me to network Diagonostics, but internet ok. Plese Help

Plese Help. Me have FAT 32 USB, ISO, Boot cam say can't install windows support software because the software update server "(null)" can't be found.
I know there are many other threads, but I guess I couldn't find clear answer to this problem. Is that the Apple's server problem or just me?
I'm trying to install Windows7 via Bootcamp, with FAT 32 formated USB with ISO, on Macbook air 2012.
Thanks!

The problem is the encryption and how your notebook handles it rather than a Time Capsule problem. I had similar problems until I updated the WLAN drivers on my IBM T41.
The way I convinced myself it wasn't an Apple problem was to connect my IBM T41, via ethernet, to my AEBSn. I was able to connect to internet so I knew it was a conflict between my wireless card and the AEBSn.
I am now using the WPA2 encryption for the AEBS without issue and connecting many different types of hardware; three iPod Touches, two MSI Wind Netbooks (Win XP SP3), one IBM T41 (Win XP SP2) wirelessly and both my 20" iMac and Dell 8250 Win XP (SP2) by ethernet
The MSI Winds are brand new and they would connect to the AEBSn but couldn't get an IP address from the internet (Limited or No Connectivity error message). The AEBSn was using WEP encryption. After doing a little research I found that WEP was a very common cause of this error message so I switched the AEBSn to WPA2 and everything works fine now.
Don't assume that because you can't connect via OPEN it isn't a encryption issue because my Winds wouldn't connect that way either...it wasn't until I changed to the WPA2 Personal that they connected.
You may also need to change the program that handles the WLAN connection, sometimes Windows handles it better but for the newest addition to our household, the MSI Winds, I am using the Realtek utility that matches the WLAN card and everything is hunky dory...
Finally sometimes firewalls will prevent getting the IP address...doesn't happen often but it has happened to me so I would double-check that by turning off the Windows Firewall and just verify that it isn't the firewall (that's never been a problem with my Apple AEBSn but it was a problem with an older Dlink g model).

Startup disk cannot be partitioned - Message

I have a new iMac with the Intel 3.06 and running 10.5.6. I am trying to use Boot Camp. I cannot get to the point to partition the drive. I have a 1 tb drive with 700GB of space. I launch Bootcamp Assistant and get the following message:
*The startup disk cannot be partitioned or restored to a single partition.*
The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.
This is a stock imac and I have not done anything to the HD. It says that it is Mac OS Extended Journaled.
What am I missing? Do I have to boot from the Mac OSX DVD?

Asked and posted, the number of identical threads is almost 'staggering.'
Try seeing if you understand the tips that error message mentions:
backup and boot from another drive and format, and then restore.
SuperDuper, Apple Restore in Disk Utility.
You NEED an external backup drive.
http://discussions.apple.com/search.jspa?objID=f1244&search=Go&q=cannot+partitio ned

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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