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Preliminary remark Like bmike already mentioned: the path back up the CoreStorage Volume to Time Machine and then erase / repartition both and start over with a new fusion drive should be preferred. Preparation: Detach any external drive (especially your external Time Machine backup drive) Restart to Internet Recovery Mode by pressing alt cmd R ...


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Usually this situation occurs when you use BootCamp to carve space out of the fusion drive to let the spinning HDD hold a windows partition. Apple's tools don't easily let you resize things since the fusion layer is actually several components. The stock answer is to back up the volume to Time Machine and then erase / repartition both and start over with a ...


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Where did you fail? Where ever you could. The disks are GPT. Windows thinks they are MBR. Apple/Microsoft set it up this way. This means you can not use anything from Microsoft to change the partitions on the disks. If changes are going to be made to the partitions, the software used must come from Apple. The only exception is windows can format partitions. ...


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Theoretically everything is fine with your Fusion Drive. Fusion Drives look like this. Disk0 is your SSD with 121 GB and disk1 is your HDD with ~1 TB (~1.121 TB summed up). The larger parts of your SSD (disk0s2) and your HDD (disk1s2) are pooled to a CoreStorage LVG (Fusion Drive: disk3) with a size of 967.8 GB. The rest is reserved for EFIs, a Recovery HD ...


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Set your Disk utility in to Debug mode. Now you should be able to "see" the hidden partitions like EFI and the Recovery HD. To enable the Debug mode use your Terminal: Enter the following command at the Terminal prompt: defaults write com.apple.DiskUtility DUDebugMenuEnabled 1 Needless to say, there is a reason for those partitions to be hidden, so do ...


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I recommend: Restart to Internet Recovery Mode by pressing alt cmd R at startup. The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated. On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into the recovery netboot image which is loaded from an apple ...


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Boot into Recovery Mode (hold down Command+R on startup) . Restore your computer or try to partion it through the Recovery HD.


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I recommend you backup your data before you running the command below Repair disk via Disk Utility App in Recovery Mode if needed and then run this command in terminal diskutil resizeVolume disk0s2 0b


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yeah I can get rid of it by enter to disk utility and then click at Grey bar of diskOs4, then go to Erase and Erase it, then go to Main macintosh HD and go to "Partition" and look at that space and delete it. PS. I don't know you will success but I can.


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I need some more information before I can answer your question. First, what model is your mac? Second, please run the following commands from the OS X Terminal app. Please post the results for me to read. sudo diskutil list sudo disktuil cs list sudo gpt -r -vvv show -l /dev/disk0 sudo fdisk /dev/disk0 All these commands do is list information about your ...


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To be able to create a multi-boot environment you have to revert from a CoreStorage partition layout to a standard partition layout. Start to internet recovery mode by pressing altcmdR while booting. Open Terminal.app in the menubar Utilities → Terminal enter diskutil cs revert LVUUID and hit the ⏎ key. (LVUUID is the Logical Volume UUID. You get it by ...


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Partition Mac HD again as small as u can. Once that is complete hit the revert key then the unerasable portion will be able to b deleted by clicking the minus button underneath. Wait for that process to be complete. It will look like nothing happened at first. Leave the screen by clicking the first aid button. Then go back and all partitions should be gone ...


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The snap shot of the distutil output helps, but I would have also included the output from the commands: sudo gpt -r show /dev/disk0 sudo fdisk /dev/disk0 Either command would give me the exact start and size of disk0s1. I have read that the EFI partition is not necessary to boot to OS X. My recovery flash drive does not have an EFI partition and I can ...


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I am astonished about complexity of this problem (see @klanomath answer) and easiness to create it. So I tried to play with it and find a work around and succeed. My problem was the following: I had 500GB disk on which I created 150GB Macintosh HD and 350GB of "free space" using Disk Utility. When I tried to format the free space and pressed Apply it ...


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Ok I managed to restore the machine to factory settings by booting to my Kali Distro, using GParted to delete all partitions (since Disk Utility wasn't working correctly), and finally re-installed Mavericks through Internet Recovery. Thanks to ScunnerDarkly for the suggestion!


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If your Mac's a Late 2011 or later model you should be able to use Internet Recovery - Apple support page here. You could always install OS X on an external USB/Firewire/Thunderbolt drive which would then give you option of retrieving whatever you need from your internal drive before thoroughly wiping it clean. Personally I like Fedora Linux for this ...


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You can not do this on an active partition. You need to boot into Recovery Mode which will let you delete the unwanted partition and resize the main partition. Select the whole drive then the Partition tab. http://support.apple.com/en-us/HT4718 PS Make sure you have a Time Machine backup before doing anything.


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You could create another partition that's the size of the other half of the disk. Then, because you can't merge your boot disk, you could make a GParted live USB, boot from it, and merge it.


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looking at your diskutil list output, your disk0s2 partition type is not correct; it should be Apple_CoreStorage, but has remained Apple_HFS (probably due to the interruption of the conversion process). If you are able to access the data on your internal disk, I would recommend backing up your data first. erasing your internal disk and doing a clean ...


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Most obvious reason is your primary partition is full. Can't shrink a partition to smaller than it's contents, and you will need some extra space for rearrangement. Empty the trash (Finder, Mail, iPhoto etc), delete apps you don't need, delete downloads you no longer need etc. You may still have problems resizing the partition as a full partition leaves ...


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Wipe free space, and then try repartitioning. I'm sure that's all the defrag did that mattered.


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For safety's sake, make a good backup before continuing. I really agree with @bmike, I'd like to say, "re-enable file vault" is a bad idea, because it's Unencrypted originally, and also "file vault 2" has so many horrible bugs. if every thing is OK, diskutil cs resizeStack 8F5A679C-06AB-44CC-BD46-33E327446D80 0g should work


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The reason is that disk0 contains your actual drive. If you look there, you see that only 125.4 GB of space is allocated to the "Core Storage". Disk 1 is the logical volume (Macintosh HD) which resides in disk0s2 (also named Macintosh HD) so deleting disk1 won't be what you want to accomplish and the tool is preventing you from deleting that "logical ...


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Last time I was surprised how easy it was to restore the recovery partition using Carbon Copy Cloner (CCC). Basically all you need is a intact recovery partition on an external disk. If you don't have that simply install OSX onto an USB drive. Then CCC lets you clone it onto your main drive.


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I'm using Unlock by Justin Ridgewell to mount my FileVault2 (CoreStorage) encrypted HDD that I have replaced my SuperDrive with. Unlock will loop through your CoreStorage encrypted volumes (sans boot) and ask if you want them unlocked upon booting. The passphrase for unlocking them will then be stored in the System Keychain so that another user could login ...


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What worked for me: Don't format or create new partition, just select "Unallocated Space" during the Windows install and click "Next" Anything else will result in a failure.


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If your Mac OS partition is encrypted with FileVault 2, it will be unreadable when you are booted to Windows. At that point, the only thing malware could do to this partition would be to wipe or delete it.


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The access to the OS X partition on Windows is managed through the HFS+ driver. If you uninstall it from Windows, the OS X partition will become inaccessible from Windows. It does virtually protect you from any kind of attack, unless a malware include itself the drivers (I hardly see that happening) or it simply deletes the whole partition. However, you ...


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a Boot Camp partition could make the computer susceptible to malware that can somehow access the OS X partition. A better way to state this would be: Running Windows could make the computer susceptible to malware that can somehow access the OS X partition. Any booted operating system on any partition has full control of any connected devices. The ...


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May I recommend trying rEFIt? It's a boot loader for EFI partition tables. You can put it on a USB stick and boot from there - it may be able to recognise the OS X partition or otherwise repair your EFI table. You can download rEFIt here.


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Disable FileVault in System Preferences -> Security&Privacy, restart, try again. Worked for me!



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