Bootcamp Partitioning Error?

Hello
I am trying to use bootcamp to partition a disk of windows 8.1 onto my Mac. I can go through up until the point where it tells me to install. Then it starts installing and gives me this error message after a few seconds:
Your disk could not be partitioned
An error occurred while partitioning the disk
So I really really need to figure out a way around this.
I am using a mac from mid 2011 and I am trying to install windows 8.1 64 bit.
If you can help me out that would be great.
(P.S. I did set up this windoes 8.1 disk with parallels on my computer originally but then I uninstalled it so I could use bootcamp and then use parallels with it later. Could having already used the disk be the problem?)
Thanks for reading my problem

Maybe this can help
I have been trying to make a partition lately for windoes 8.1
I have OSK Mavericks and I tried both using bootcamp to make a partition and then I tried using disk utility to make a partition. I have looked up how to fix it such as verifying the disk or verifying the disk on the repair drive. I have also tried typing in that command in the Command+S startup.
(Btw the first time I tried partitioning through Bootcamp it was working but then I ejected my usb as it was making the partition and it gave me an error. Partitioning has been giving me errors ever sense that.)
(sorry about the weird white highlighting)

Similar Messages

Help needed with delete of bootcamp partition, error message 'Couldn't unmount disk'

Hello all
Sorry if this issue has been repeated elsewhere, I did search but there wasn't a discussion relating to my specific issue.
When we bought the iMac a couple of years ago, my husband partitioned the hard drive to run Windows via Bootcamp. Having got used to the Mac and experiencing the frustration between having to reboot to access each partition I have decided to restore the Mac to factory settings and install Parallels 8 so I can continue to use Office and Coreldraw).
So having backed up all of my files, I started the Mac up holding the 'Alt' key and then loaded the Recovery HD mode followed by Disk Utility. I then selected Bootcamp and erased all data from the partition. [Note: there are 2 files left which it won't allow me to erase through this method]
I then selected the main drive and the tab 'Partition', from the layout I then selected Bootcamp and clicked the minus button. I get the message confirming which partition I am about to delete and hit remove. I then get the error message 'Partition failed: couldn't unmount disk'.
I would be very grateful for some help please? I am not the best techy person but happy to give anything a go.
Just to mention there is nothing left on the Mac that I want to keep, therefore if there is an easier way than having to delete the partition then happy to hear it.
Thanks
Tara

Hello Tara,
Are you using Filevault?
https://kimmo.suominen.com/blog/2013/03/file-vault-volumes-cannot-be-resized/
Also see the last few posts here...
https://discussions.apple.com/thread/3894449?start=15&tstart=0

Bootcamp partition error.

I get this message appears every time I try to partition my MacBook, The disk cannot be partitioned because some files cannot be moved, message. Underneath it also gives the message, "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." What should I do? I have tried to lower the amount that I partition and doing a 7-pass clear of my free area. I have 45 GB unused and I want to partition 21 Gb.

Hi and welcome to Discussions,
the 'some files cannot be moved' message you saw indicates that the BootCamp Assistant cannot find enough *free contigeous diskspace* to make the Windows partition in the size you want.
A 7-pass clearance of your current free diskspace doesn't help since the free space is too 'cluttered' all over your harddisk.
Have a read in this thread http://discussions.apple.com/thread.jspa?messageID=12132221&#12132221 for maybe a solution.
Regards
Stefan

Bootcamp partitioning error: "enable journaling", but my drive is journaled already.

Hi,
I'm trying to partition my Mac OS X (10.6.8) to install Windows 7, but during the partitioning process an error comes up that tells me my drive needs to be in Extended (Journaled) format, and directs me to Disk Utilities. However, my drive is already in that format, it always has been, and the option to do so is grayed out as a result. I've combed the message boards for similar problems but the only solution I've seen involved already existing partitions that weren't all journaled, but that doesn't apply to my case. Any thoughts?
Thanks!

Are there any other partitions on the drive besides your startup volume?
You might try:
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.

Regaining lost space after error when removing Bootcamp partition?

     I am running snow leopard 10.8.2 and had a bootcamp partition of 115gb for Windows 7. Recently I tried to remove the partition using the bootcamp assistant and it displayed an error message that it was unable to remove the partition, however the icon for the partition disappeared in finder and the startup disk menu. I tried to remove the partition again in the same way and this time the error message did not come up, but the utility froze while it was removing the partition and after waiting for an hour or so I had to force quit the utility and restart my Mac. The bootcamp partition doesn't show up, but I did not get the 115gb back? Any ideas how I can reclaim it? Any help is much appreciated!
-Ethan

Notice the 76GB Free Space in the diskutil cs list output.
Unless Kappy has alternative suggestion, I suggest the following (the last 'b' is bytes).
diskutil cs resizeVolume <UseTheLongStringUUIDAboveTheMacintoshHDLine = DB68...> <UseTheSizeInBytesUnderTheLogicalVolumeGroupEntry = 250140434432b>
diskutil cs resizeVolume
Usage: diskutil coreStorage resizeVolume
        lvUUID|MountPoint|DiskIdentifier|DeviceNode size
Resize a logical volume, which is one of one or more disks that consume storage
out of a logical volume group. The logical volume group will have more or less
available space after this operation, if it was a shrink or grow, respectively.
Example: diskutil coreStorage resizeVolume
         11111111-2222-3333-4444-555555555555 10g

New iMac - 10.8.3 - Windows 8 - Bootcamp error EFI - MBR - GPT - Bios won't let me select Bootcamp partition

iMac late 2012 - Bought - Updated 10.8.3
W8 ISO downloaded (tried with 2) > Bootcamp > USB Booteable created
Bootcamp > Install Windows7 (8) > Partition disk (gave W8 75gb), all fine. After it's ready the iMac restarts.
It restarts and remains in a black screen. I have to force power off, restart manually.
Holding 'Alt' I DO GET into the booteable menu:
I see:
[Macintosh HD]
[Windows]
[EFI Boot]
If I select [Windows] I get to that same black screen I initially got before by bootcamp assistant
BUT WHEN I SELECT [Efi] I DO GET THE WINDOWS 8 INSTALLATOR!!
From there, all fine, language selection > Next > Serial Key > Next... BUT WHEN THE PARTITION/DRIVE INSTALLATION WINDOW SHOWS UP
IT WONT LET ME SELECT THE BOOTCAMP PARTITION
"The selected disk has a MBR partition table. On EFI sistems, Windows can only be installed on GPT disks"
"You can't install Windows in this disk. It is possible that the Hardware is not able to boot in this disk. Make sure he dis controller is able in the system BIOS"
I try from there to FORMAT THE DRIVE (it gives you a chance) But still theres NO WAY I CAN GO "NEXT" in the next installation step.
It has been 3 days trying and trying, PLEASE HELP BOOTCAMP GURUS!

From my experience last week installing Windows 8 on a 15" MacBook Pro (Mid 2010).using 10.8.3 OSX.
I used BootCamp Assistant to partition the OSX drive.
I have a Full Version Windows 8 x64 DVD and inserted that into the Internal DVD of the MBPro on reboot after BootCamp was finished.
I restarted and got nothing but a Black Screen.
I powered off and restarted using the Option Key.
Three Icons appeared MacintoshHD, Windows DVD Icon, and EFI Boot
I thought the DVD might be FU'd so I tried EFI Boot which did nothing.
Before burning another Windows 8 DVD I tried to hook up my LaCie FireWire external DVD with the Win 8 Install DVD inserted.
Again nothing.
So I removed the Win 8 Install DVD from the external La Cie and inserted it back into the Internal MBPro DVD.
Did a Power Off Reboot with the Option Key depressed at the chime.
Again the three icon choices.
This time selected the Windows DVD Icon and got a Black Screen agian.
BUT THIS TIME I JUST PATIENTLY WAITED!
After about 20 minutes the Windows 8 Installation Process started and I got to Install everything to the new BootCamp Partition.
I had to format the BOOTCAMP Partition to NTFS using the advanced option and had to choose NEW installaltion NOT UPGRADE.
Windows 8 installed perfectly and I installed the drivers after installation completed from the Internal DVD from another DVD I had burnt with just the Windows 8 Support Software..
I was surprised that that the MBPro took so long to recognize the Internal Win 8 Installation DVD but it did eventually recognize it and installed flawlessly.
Try the PATIENT approach and let us know if we may have found a clue here.
BTW I used System Recovery Boot Disk Utility to both Repair Hard Drive and Repair Permissions before attempting any of the above and also made a Full Time Machine Backup.
Better Safe than wiping your drive.

B-tree error, cannot mount Lion partition, but can mount bootcamp partition. Unable to reformat because it won't mount. How do I reformat?

Hi everyone:
So earlier today I was taking a screen shot with (command+shift+4) and right when I took it, the spinning wheelcame up on the screen. It was there for a long time, so I decided to turn off my macbook by holding down thepower button. When I turned it on, it stayed at the grey apple logo with the loading circle underneath.
I turned it off again, and this time I started it into the Recovery HD. I ran a disk verify and it said my disk was corrupt and needed to be repaired. I tried to repair it and it said it could not be repaired. Next, I tried to erase the hard drive and it still didn't work because it cannot mount the hard drive.
The thing that baffles me is that I have 2 partitions on my hard drive, one for mac, the other for windows bootcamp and the windows hard drive is able to be mounted. I tried to completely delete the entire hard drive, but it won't let me. What are the next steps I should take into solving this problem? Any/All help is appreciated. Thanks

Sounds like the drive may be faulty or have suffered a problem. Bummer mate, but it happens.
Disk Utility won't let you do a complete erase? Probably not what you want to do anyway as you'd lose your bootcamp partition.
I would recommend you replace the drive and re-install OS X. Once they get faulty like this you're into a greatly increased risk window. You'll need to have a bootable DVD / USB stick of Lion or a RecoveryHD USB created by the Lion Recovery Assistant.
If the MBP is under warranty or you have Applecare you could get the drive replaced under warranty.
To retrieve your files and Apps etc you can restore from a backup, or if you don't have one then you could get a sata enclosure for the old drive and attach it as an external drive then attempt to copy the content from it once you've re-installed. Time Machine backups will make this much easier for you though.
For bootcamp, you're going to need a 3rd party program such as Winclone (www.twocanoes.com) to allow you to take an image of the bootcamp partition and restore it to the new bootcamp partition on the new drive.
I can heartily recommend the Seagate Momentus XT 750GB hybrid drive (ST750LX003) if you're going for a replacement. You won't believe the difference in performance it provides.
Good luck!

Partitioning error in bootcamp

also why do i get a partitioning error that says "The disk cannot be partitioned because some files connot be moved"
the seubtext says "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."
ps sorry about the link, its the only way to copy and paste

It means one of two things:
1. You are trying to create too large a partition and are running into a part of the drive OS X is currently using.
2. Your request needs contiguous space, but the drive is slightly fragmented and Boot Camp Assistant cannot allocate the amount of contiguous space requested.
You can try configuring a smaller Windows partition if that's feasible. Otherwise, you need to defragment your hard drive.
Defragmenting a Drive
1. Get an empty external hard drive and clone your internal drive to the external one.
2. Boot from the external hard drive.
3. Erase the internal hard drive.
4. Restore the external clone to the internal hard drive.
Clone the internal drive to the external drive
1. Open Disk Utility from the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Check the box labeled Erase destination.
5. Select the destination volume from the left side list and drag it to the Destination entry field.
6. Select the source volume from the left side list and drag it to the Source entry field.
7. Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
Restart the computer and after the chime press and hold down the OPTION key until the boot manager appears. Select the icon for the external drive and click on the downward pointing arrow button.
After startup do the following:
Erase internal hard drive
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your internal hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed. Do not quit Disk Utility.
Restore the clone to the internal hard drive
1. Select the destination volume from the left side list.
2. Click on the Restore tab in the DU main window.
3. Check the box labeled Erase destination.
4. Select the destination volume from the left side list and drag it to the Destination entry field.
5. Select the source volume from the left side list and drag it to the Source entry field.
6. Double-check you got it right, then click on the Restore button.
Destination means the internal hard drive. Source means the external startup drive.
Note that the Source and Destination drives are swapped for this last procedure.

Upgrading MacBook Pro Hard Drive - cannot get Bootcamp partition to work

Hello,
The other day, I decided to replace my 320 GB hard drive with a 1 TB hard drive/SSD hybrid. I did a little bit of research about cloning the drive before that, and it seemed pretty straight forward to clone the OS X partition, but I wasn't really sure about cloning my Windows partition. Originally, my 320 GB hard drive had 2 partitions: 220 GB for OS X Mavericks, and 100 GB for Windows 8.1.
I bought the new drive with an external enclosure and plugged it in. The first thing I did was open Disk Utility and partitioned the new hard drive (750 GB HFS+, 250 GB NTFS). I figured I would need to partition it first and clone each partition separately. I used Carbon Copy Cloner to clone the OS X partition, and it worked with no problem (I immediately could restart my computer and boot with the partition on the new drive, while it was still plugged in by USB).
Next, I tried using CCC to clone the Windows partition the same way (I realize now that CCC cannot do this). 7 hours later, the cloning was complete, but there was an error that a couple files couldn't be copied. I tried copying them manually but it didn't work. I wasn't sure if the Windows partition would work, so to find out, I switched the hard drives and put the old 320 GB one in the external enclosure. I booted my computer and it booted the new OS X partition with no problem. It also mounted the Windows partition that I cloned with CCC, and I can access all of the files in it. However, when I restarted and held down "option", it would not let me boot the Windows partition.
After some googling, I realized CCC is not able to clone a bootcamp partition and make it bootable, so I opened disk utility and deleted the Windows partition (using the minus button), then recreated it (using the plus button). I downloaded Winclone (paid $30), which supposedly can clone a bootcamp partition. I opened Winclone and it seemed pretty simple: you just choose the source partition on the left, and the target on the right. I plugged in the USB enclosure with my old hard drive, and in the Winclone menu the original Windows partition popped up. I chose that as my source, and chose to copy it to the new NTFS partition on the new drive that I created. I left it on overnight, and when I woke up it said it was completed.
I now had two drives mounted: my NTFS partition that I created, and a new one that said "EFI". I have no idea what EFI is. My NTFS partition looks like it has all of the files from my original Windows partition on it; however, when I restart it does not allow me to boot with it, although I now have the option to boot EFI. When I select EFI, I am given the Windows 8.1 start up screen (with the blue Windows logo), but then an error message pops up saying something like there is an issue and it needs to restart (it restarted before I could read the whole thing).
When I boot in OS X, I only have the NTFS partition (with all my Windows files) mounted, and no EFI. When I restart, I can still boot EFI, but I always get the same message and then it restarts.
Is there any way I can fix my Windows partition so that it works the same way it did on my old drive? What is EFI? Can I delete it? How can I make the NTFS partition, which seems to have all of my files, bootable? I only want 2 partitions: one for OS X, and one for Windows. Also, can I do all of this without having to reinstall either of the operating systems?
Thanks

Hmm, that's a good question!
I headed over to the twocanoes website (the folks that make Winclone) and their guide mentions something about running Sysprep before you create the Windows image. If you skipped that step, that may be why you're having issues
http://www.twocanoes.com/support/winclone/migrating-a-bootcamp-partition-with-wi nclone/
Step 24 in that guide also mentions copying a Boot file - were you able to/did you do that?
You may have better luck over in the Bootcamp forum, which is here.
~Lyssa

I have a Bootcamp partition on my Imac with Mavericks which I can't delete because the Partition Layout is greyed out and is stuck on 'Current'. What can I do?

I have a Bootcamp partition on my Imac with Mavericks which I can't delete because the Partition Layout in Disk Utility is greyed out and is stuck on 'Current'. What can I do? I was trying to install Windows 8.1 but apparently, this is not yet possible.
I was originally able to restore to my original Mac OSX partition using Boot Camp Assistant but then after entering Disk Utility and re-RAIDing the default RAID 1 to RAID 0 in the BootCamp partition (I suspect this is the cause of the problem but why was it defaulted to RAID 1 in the first place?!!!!), forever afterwards, I couldn't restore the single OSX partition.
Whenever I used BootCamp Assistant my choice to 'Install or remove Windows 7 or later version' was greyed out. Finally I went to Disk Utility to repartition but the Macintosh HD and BootCamp disk partition functions were also greyed out (even if I started up from Recovery mode holding down option, command and 'R' and choosing Disk Utility). BootCamp Assistant gives the error message 'The startup disk cannot be partitioned or restored to a single partition' with additional small script 'The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows', and DU gives the error message 'The full size of the Fusion drive is not available for repartitioning'.
What can I do to fix this problem? How can I make the Partition Layout button active in DU so I can change the partition to all OSX? I'm prepared to wipe off all my data etc to repartition and have backed up all to disk using Time Machine.

My problem is fixed now, thank you. It was caused by my changing the Boot Camp partition's 'RAID1' to 'RAID0'. If I hadn't done that, Boot Camp would still have been able to 'restore' back to the one partition. It was fixed with the help of Applecare by using a terminal and typing a command to erase the IP of the Macintosh disk (not the volume) as well as the IP of the Bootcamp partition (if I remember correctly), but then I had to restore the OS and all my applications and data etc which I had previously backed up using Time Machine. I haven't taken note of the exact command terminology used. It would be wise to speak to Applecare about this if possible.
Two words of warning, 1. According to the cause of this problem, it might be wise, after reinstalling the ops system to reinstall all extra applications one by one, manually, in case a similar problem arises again. Then manually copy back all data. Or the Mac user could use the Time Machine backup and then uninstall all the added apps then re-install them one by one manually. 2. Beware as after all this the user might not have the 'Recovery partition'. There is a small recovery partition (a few 100 Mb is size) which comes with all later Macs. After all this is done this tiny partition might not be there anymore and the user might have to re-install Mavericks again to get it back, or just install the upcoming update of Mavericks due in a month or so.

How can I restore Windows 7 to Bootcamp partition - not reformat the entire hard drive?

Hello Apple (Mac) Community,
I originally posted this question over on answers.microsoft, but no help was forthcoming. Hope someone can help me with a problem that's (almost) making me nuts! I teach graphics to college students. In brief: I run Windows 7 Pro 64 on a Mac Pro tower, along with Snow Leopard (OSX). Windows is loaded on one partition of a 1TB drive. The other partition is a Mac backup. The Mac OS is on a different drive. Everything was going swimmingly with both OS, until recently. Unfortunately, the drive with Windows showed problems and I determined that the HD was either toast or needed a total reformat. My Mac data was all backed-up. Now I wanted to backup Windows so I can easily get back to the relatively happy point of my Windows 7 experience (drivers loaded, dual monitors all working, etc.). I did some online searching and the recommendation was to create a "system image" of the existing Windows 7 install by attaching an external drive, formatting that to NTFS and selecting "backup to image" in Windows. I did that and also took the opportunity to "create a backup disc" on a DVD. (Windows recommended). Next I rebooted back to Mac OS and completely reformatted the problem 1TB disc to a single partition, zero all data, just to see if it would actually reformat. It all worked! So far, so good. Next I used Bootcamp to create two partitions, one for Windows. I then restarted using the Win7 Pro (64) install disc, reformatted the Bootcamp disk to NTFS (as required) and installed Windows 7. After all that is completed and all working, I next try to use the restore from image function while booted in Windows. I'm instructed to restart from the Win install disc, which I do. Here's where things get difficult. When I try to choose restore from image, at that point the installer asks which drives to I want to exclude... but does not show partitions, only full HDs. I do not want to reformat the entire 1TB drive. I only want Windows on the 120gb Bootcamp partition (which is already formatted for Windows BTW). I spent a lot of time online reading through articles with users having the same frustration.
So here (at long last) is my question: How can I either restore Windows just to a Bootcamp partition... using "Windows System Image" or if that can't be done... can I somehow import all of the settings, etc. from the "image" (image is on external HD) into a fresh Win 7 install? So far the "backup disc" also seems useless. I can't even boot to Windows from it. BTW Apple folks: the only response on the MS side was that some "expert" simply posted links on how to install Windows and restore... not helpful with my particular problem of restoring to a partition.
Any help would be appreciated! Hopefully some help that even a Mac user / new Windows user could understand would be better! Thanks!
-melt

WinClone 3 is OS X and saves Windows image it makes for restore - that should work but you will have to try and you would need to make a new image unless it also works with a native Windows system restore image. It is now supported and has come a long way.
http://www.twocanoes.com/
Paragon Clone OS works and does disk-to-disk clone just like CCC you end up with two bootable drives. But does not work with your setup. It would let you clone and move your Windows install to an SSD or another disk drive though and be bootable.
During its clone process it checks for errors which is very helpful and lets you know - something CCC and others should adopt more of.
http://www.paragon-software.com/downloads/demo.html
I wish for our/my sake you had re-read and rewritten the long 'story' and broken it into a brief list of facts we needed.
OS X
Windows
Backup (though external is much safer) and you want bootable OS X clones as well as TimeMachine
https://support.apple.com/kb/HT1427
https://support.apple.com/kb/HT1553
There are a number of things to do like chkdsk and others as well as Windows DVD to do automatic system repairs and find out why.
AppleHFS - the abilty to mount and read HFS volumes can be notorious.
I would rearrange and redo your storage setup and how you use the 4-5 internal hard drive bays.

Recovering bootcamp partition - is there a solution that works?

Dealing with bootcamp issues after a Lion upgrade seems to be a common problem with no agreed solution.
When I upgraded my iMac to Lion, the upgrade process couldn't create a recovery partition so Apple support advised me to use Disk Utility to create a small (5 GB) block of free space on my harddisk for the recovery partition to use and then to use Disk Utility to enlarge the OSX partition again to recover whatever remaining free space was left after the Lion upgrade had completed.
This I duly did. However, after I enlarged the OSX partition using Disk Utility to recover the free space I found that a) the Bootcamp partition had been renamed "disk0s4" and b) when holding down the Option key when booting, the Recovery option was now labelled "EFI Boot" and appeared to boot from the regular OSX partition. Attempting to boot windows in Bootcamp results in a "missing operating system" error message.
I'm not so worried about the recovery partition as I have a bootable DVD and USB flash drive.
What I would like to do is recover some files from the Windows partition. There is a lot of opinions in the Apple suport forums about what works such as, booting Windows from the install disk and running the "fixmbr" and "fixboot" commands or using rEFIt or BootPicker (which doesn't seem to work on Lion).
Is there a reliable approach to fixing this problem so that I can at least read the contents of the partition, even if I can't boot from it? If I can't actualy recover the partition I'm not too fussed, so long as I can get the data off it.
Thanks...Macs

Why do you suggest installing Lion on an external h/disk? Is this because of problems with Lion or just suggested standard procedure?
Some of the options may work although I am unable to mount the partition at all (in OSX or by booting from a Linux live CD and trying to mount it from there) so I'm not sure how far any of them will get.
I haven't tried booting from the Windows DVD as yet.
If I run Verify on Disk Utility I get this:
2012-03-20 22:18:41 +1100: Verifying volume “disk0s4”
2012-03-20 22:18:41 +1100: Starting verification tool:
2012-03-20 22:18:49 +1100: Checking file system2012-03-20 22:18:49 +1100: ** /dev/disk0s4
2012-03-20 22:18:49 +1100: Invalid BS_jmpBoot in boot block: ba9a97
2012-03-20 22:18:49 +1100: Error: This disk needs to be repaired. Click Repair Disk.
2012-03-20 22:18:49 +1100:
2012-03-20 22:18:49 +1100: Disk Utility stopped verifying “disk0s4”: This disk needs to be repaired. Click Repair Disk.
Repair disk says this:
2012-03-20 22:31:06 +1100: Verify and Repair volume “disk0s4”
2012-03-20 22:31:06 +1100: Starting repair tool:
2012-03-20 22:31:12 +1100: Checking file system2012-03-20 22:31:12 +1100: ** /dev/disk0s4
2012-03-20 22:31:12 +1100: Invalid BS_jmpBoot in boot block: ba9a97
2012-03-20 22:31:12 +1100: Volume repair complete.2012-03-20 22:31:12 +1100: Updating boot support partitions for the volume as required.
2012-03-20 22:31:12 +1100: Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
2012-03-20 22:31:12 +1100:
2012-03-20 22:31:12 +1100: Disk Utility stopped repairing “disk0s4”: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
I wondered whether the entry in the partition table had been completely screwed so I had a look with FDisk and GDisk.
GDisk says this about the partition table:
Disk /dev/disk0: 976773168 sectors, 465.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): FB4FA8FD-D192-4589-93E1-A19A9F0F29D7
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 8-sector boundaries
Total free space is 13 sectors (6.5 KiB)
Number Start (sector)    End (sector) Size       Code Name
   1              40          409639   200.0 MiB   EF00 EFI System Partition
   2          409640       869550263   414.4 GiB   AF00 Customer
   3       869550264       870727719   574.9 MiB   AB00 Recovery HD
   4       870727720       976773127   50.6 GiB    0700 Untitled
And this about partition 4:
Partition number (1-4): 4
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 94C06328-9817-4012-9C30-C97592E671C1
First sector: 870727720 (at 415.2 GiB)
Last sector: 976773127 (at 465.8 GiB)
Partition size: 106045408 sectors (50.6 GiB)
Attribute flags: 0000000000000000
Partition name: 'Untitled'
For its part FDisk says:
Disk: /dev/disk0     geometry: 60801/255/63 [976773168 sectors]
Signature: 0xAA55
         Starting       Ending
#: id cyl hd sec - cyl hd sec [     start -       size]
1: EE 1023 254 63 - 1023 254 63 [         1 -     409639] Unknown ID
2: AF 1023 254 63 - 1023 254 63 [    409640 - 869140624] HFS+
3: AB 1023 254 63 - 1023 254 63 [ 869550264 -    1177456] Darwin Boot
*4: 07 1023 254 63 - 1023 254 63 [ 870727720 - 106045408] HPFS/QNX/AUX
From looking at the Fdisk and GDisk output I cannot see where the problem is occurring (although I know 2/5ths of stuff all about partition tables). I notice that the Bootcamp partition is now lacking a name although I don't know whether this matters or not and strangely FDisk identifies it as an HPFS filesystem whereas Disk Utility identifies it as MSDOS (FAT).

Bootcamp partition shows up as grey "disk0s4" in Disk Utility

Hello everyone,
So I am a few days into this tiring and discouraging process of trying to get my iMac back to it's original working state. Here's to hoping for a solution:
Ever since I bought my iMac, I've been running OSX Mountain Lion with Win7 installed through BootCamp, without any problems. I recently wanted to increase my Boot Camp partition size from 80GB to 149GB because I was running low on disk space, and that was the start of many problems to come.
Here's what I tried first:
Make a backup copy of my OSX partition through Disk Utility's "Restore" tab (onto external HD 1)
Make a backup copy of my Windows partition through "Create a system image" in Windows Control Panel (onto external HD 2)
Use WinClone to backup a copy of my Windows partition
Erase Boot Camp partition in Disk Utility
Resize Mac OS partition to max
Create new FAT partition (149 GB)
Restore WinClone backup to the FAT partition (hoping it'll "fill up" the remaining free space)
I don't remember all the details, but all of this led to Windows not being able to boot properly, and then soon after, OS X wouldn't work either. The built-in Recovery HD somehow became unusable and showed up as grey in Disk Utility (too chaotic to remember how). After much trial and error, I was left with the Mac's built in Internet Recovery option, which I used to reinstall OS X Mountain Lion (on top of the existing Mac partition). Afterward, I regained the Recovery HD, and resized the Mac OS X partition to cover over the unusable free space that remained.
After that:
Ran Boot Camp Assistant to start the Windows installation process from scratch.
After the installation finished, I used "System Image Recovery" from a bootable Windows Recovery USB that I created.
Upon restart, Windows would not boot (which was fixed using the bootrec commands within Command Prompt off the USB).
This allowed Windows to boot fine, and it was exactly as it was before this all began.
Now, here are my current problems.
I believe the simplest way to achieve my original goal of extending my Windows partition would be to use Paragon's Camptune X, but upon running it, it tells me it can't find any Bootcamp configuration on my system.
While both OSX and Windows appear on the Startup Manager when I hold down the "option" key (which boot and run just fine), the "BOOTCAMP" partition that I would normally see in Disk Utility (under Macintosh HD) is now listed as "disk0s4", is grey, and "unmounted". It's also listed as MS-DOS (FAT), while it shows up as NTFS within Windows.
The Startup Disk preference pane lists Macintosh HD as the only choice.
I'm exhausted from the past week of repeated backup/reinstallations and trying to make this work. I've done my share of research and reading related forum threads, with no real solution. I am hoping "The hatter" will see this, as he's offered much info/advice on this topic on these boards, but I still haven't been able to resolve this issue.
Thanks for reading, anyone have any ideas?

By using Disk Utility to try to resize your Bootcamp partition you messed up your hard disk. You need to backup all your data from the disk, eraze and format your disk, and reinstall OSx, then if you want a new Bootcamp partition run Bootcamp Assistant.
Next time you want to resize the Bootcamp partition use CampTune, not Disk Utility.

Bootcamp partition is no longer visible and bootable

I decided to change size of my bootcamp (windows partition) by following steps in this thread:
how to resize my bootcamp partition without deleting itit
I ended up with having bigger windows partition (which is what I was trying to achieve), that I was able to boot to, but my Windows disk was no longer seen in OS X. I reviewed the thread above once again and it was pointing to another thread where folks were discussing issue similar to mine:
Repairing Boot Camp after creating new partition
Bottom line - Unfortunately, after performing the suggested action plan, I am no longer able to boot to my windows partition nor to see it from OS X
(I am able to select Windows disk while hitting Alt/Option during the boot, but then I get the message 'A Disk Read Error Occured. Press CTRL+ALT+DEL to restart')
Please see the diagnostics below and please advise how this could be fixed - at minimum I would like to boot to Windows partition again, maximum - also to access it via OSX as well.
GycioMPB:~ gytis$ sudo gpt -r -vv show disk0
gpt show: disk0: mediasize=320072933376; sectorsize=512; blocks=625142448
gpt show: disk0: Suspicious MBR at sector 0
gpt show: disk0: Pri GPT at sector 1
gpt show: disk0: Sec GPT at sector 625142447
      start       size index contents
          0          1         MBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6
         40     409600      1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640 531562496      2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
531972136    1269536      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
533241672   27345080
560586752   64555008      4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
625141760        655
625142415         32         Sec GPT table
625142447          1         Sec GPT header
GycioMPB:~ gytis$ sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 38913/255/63 [625142448 sectors]
Signature: 0xAA55
         Starting       Ending
#: id cyl hd sec - cyl hd sec [     start -       size]
1: EE    0   0   2 -   25 127 14 [         1 -     409639] <Unknown ID>
2: AF   25 127 15 - 1023 254 63 [    409640 - 531562496] HFS+
3: AB 1023 254 63 - 1023 254 63 [ 531972136 -    1269536] Darwin Boot
*4: 07 1023 254 63 - 1023 254 63 [ 560586752 -   64555008] HPFS/QNX/AUX
GycioMPB:~ gytis$ sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 0.8.10
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Partition table scan:
MBR: hybrid
BSD: not present
APM: not present
GPT: present
Found valid GPT with hybrid MBR; using GPT.
Command (? for help): p
Disk /dev/disk0: 625142448 sectors, 298.1 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 000066EB-7670-0000-C052-0000E7240000
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 625142414
Partitions will be aligned on 8-sector boundaries
Total free space is 27345741 sectors (13.0 GiB)
Number Start (sector)    End (sector) Size       Code Name
   1              40          409639   200.0 MiB   EF00 EFI system partition
   2          409640       531972135   253.5 GiB   AF00 Customer
   3       531972136       533241671   619.9 MiB   AB00 Recovery HD
   4       560586752       625141759   30.8 GiB    0700 Win HD
Command (? for help):
Thanks!

Hi Loner,
please see the output:
00000000 eb 52 90 4e 54 46 53 20 20 20 20 00 02 08 00 00 |.R.NTFS    .....|
00000010 00 00 00 00 00 f8 00 00 3f 00 ff 00 00 e0 69 21 |........?.....i!|
00000020 00 00 00 00 80 00 80 00 f8 07 d9 03 00 00 00 00 |................|
00000030 00 00 0c 00 00 00 00 00 02 00 00 00 00 00 00 00 |................|
00000040 f6 00 00 00 01 00 00 00 99 bf 2f fc e2 2f fc d2 |........../../..|
00000050 8c 92 fe 64 fa 33 c0 8e d0 bc 00 7c fb 68 c0 07 |...d.3.....|.h..|
00000060 1f 1e 68 66 00 cb 88 16 0e 00 66 81 3e 03 00 4e |..hf......f.>..N|
00000070 54 46 53 75 15 b4 41 bb aa 55 cd 13 72 0c 81 fb |TFSu..A..U..r...|
00000080 55 aa 75 06 f7 c1 01 00 75 03 e9 dd 00 1e 83 ec |U.u.....u.......|
00000090 18 68 1a 00 b4 48 8a 16 0e 00 8b f4 16 1f cd 13 |.h...H..........|
000000a0 9f 83 c4 18 9e 58 1f 72 e1 3b 06 0b 00 75 db a3 |.....X.r.;...u..|
000000b0 0f 00 c1 2e 0f 00 04 1e 5a 33 db b9 00 20 2b c8 |........Z3... +.|
000000c0 66 ff 06 11 00 03 16 0f 00 8e c2 ff 06 16 00 e8 |f...............|
000000d0 4b 00 2b c8 77 ef b8 00 bb cd 1a 66 23 c0 75 2d |K.+.w......f#.u-|
000000e0 66 81 fb 54 43 50 41 75 24 81 f9 02 01 72 1e 16 |f..TCPAu$....r..|
000000f0 68 07 bb 16 68 70 0e 16 68 09 00 66 53 66 53 66 |h...hp..h..fSfSf|
00000100 55 16 16 16 68 b8 01 66 61 0e 07 cd 1a 33 c0 bf |U...h..fa....3..|
00000110 28 10 b9 d8 0f fc f3 aa e9 5f 01 90 90 66 60 1e |(........_...f`.|
00000120 06 66 a1 11 00 66 03 06 1c 00 1e 66 68 00 00 00 |.f...f.....fh...|
00000130 00 66 50 06 53 68 01 00 68 10 00 b4 42 8a 16 0e |.fP.Sh..h...B...|
00000140 00 16 1f 8b f4 cd 13 66 59 5b 5a 66 59 66 59 1f |.......fY[ZfYfY.|
00000150 0f 82 16 00 66 ff 06 11 00 03 16 0f 00 8e c2 ff |....f...........|
00000160 0e 16 00 75 bc 07 1f 66 61 c3 a0 f8 01 e8 09 00 |...u...fa.......|
00000170 a0 fb 01 e8 03 00 f4 eb fd b4 01 8b f0 ac 3c 00 |..............<.|
00000180 74 09 b4 0e bb 07 00 cd 10 eb f2 c3 0d 0a 41 20 |t.............A |
00000190 64 69 73 6b 20 72 65 61 64 20 65 72 72 6f 72 20 |disk read error |
000001a0 6f 63 63 75 72 72 65 64 00 0d 0a 42 4f 4f 54 4d |occurred...BOOTM|
000001b0 47 52 20 69 73 20 6d 69 73 73 69 6e 67 00 0d 0a |GR is missing...|
000001c0 42 4f 4f 54 4d 47 52 20 69 73 20 63 6f 6d 70 72 |BOOTMGR is compr|
000001d0 65 73 73 65 64 00 0d 0a 50 72 65 73 73 20 43 74 |essed...Press Ct|
000001e0 72 6c 2b 41 6c 74 2b 44 65 6c 20 74 6f 20 72 65 |rl+Alt+Del to re|
000001f0 73 74 61 72 74 0d 0a 00 8c a9 be d6 00 00 55 aa |start.........U.|
00000200
So do you think there are there any chances of fixing it?
Though it is sad that resizing of bootcamp is not supported natively (by Disk Utility?) as it seems a lot of people would like to have this.

Windows 7 64bit would not install on bootcamp partition

I have a Windows 7 64bit ISO. I inserted a 8GB usb stick into my New Retina MacBook Pro and ran the Boot Camp to install Windows 7 bootable from the USB stick. It all went fine, booted into Windows install, and when I had to select a partition, I selected the only one that said BOOTCAMP and was 40GB, just as I created it earlier when creating a partition size compared to the total disk. I selected the partition and as I could not select next, I selected to format the 40GB Bootcamp partition. It didnt take long, but afterwards, when I clicked next, it showed up an error about not being able to use the partition or something, I cant fully remember.
But now my OSX will not boot. When I turn off the computer by holding down the power button, it turns off, and then when I hold down the power button to turn it back on it does the grey screen part, and then shows a black screen and shows:
No bootable device -- insert boot disk and press any key
What do I do here?

Hold the option/alt key down on a wired or built in keyboard and boot the machine, you enter Startup Manager and thus can get into OS X.
Next, when your installing Windows, you first have to format the internal Bootcamp partition from the FAT32(MSDOS Apple calls it) to NTFS while booted from the Windows 7 install disk, THEN you can install Windows and it takes a lot longer than a few seconds.
Read the BootCamp manual, there is also drivers you have to install into Windows
https://www.apple.com/support/bootcamp/
Windows in BootCamp or Virtual Machine?
Once you get it up, learn how to clone OS X and Windows Bootcamp
Most commonly used backup methods

Bootcamp Partitioning Error?

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