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I tried everything from apple.stackexchange and other blogs but none worked. But this method worked like charm: Make a bootable Windows USB using bootcamp. Do not partition or download support files. Restart your comp holding "option" key. Open Windows partition and keep clicking next until you have to choose to format a disk. Choose the block with the ...


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You have several possibilities to repartition your CoreStoraged drive: You may resize the Logical Volume Group non-destructively with diskutil diskutil cs resizeStack LVUUID size. You get the LVUUID with diskutil cs list You may revert the Logical Volume Group to a native volume diskutil coreStorage revert LVUUID and check and resize the volume afterwards ...


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Something went totally wrong and your Logical Volume Group is fragmented. You have to rebuild your Fusion Drive from scratch: Preparation: Backup "Macintosh HD" to an external drive with Time Machine Detach any external drive (especially your external Time Machine backup drive) Restart to Internet Recovery Mode by pressing alt cmd R at startup. The ...


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Actually you have a CoreStorage Logical Volume Group on your physical disk named "Macintosh HD" containing a Logical Volume also named "Macintosh HD". The latter is the volume usually visible on your desktop (depending on your Finder settings). The Logical Volume Group already extends across your whole physical disk except an invisible EFI partition (200 MB) ...


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To delete CoreStorage volumes you have to use the CLI: please backup your volume "mainHD" boot to Internet Recovery Mode (hit altcmdR immediately after the start-up chime) open Disk Utility and check/repair mainHD quit Disk Utility , open in the menubar Utilities/Terminal.app and enter diskutil cs deleteVolume LVUUID to delete the Logical Volume in your ...


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You can't move the start block (=380677208 for LVG2 or "Macintosh HD 2" in your case) of a CoreStorage Volume (Group) non-destructively. The same is valid for non-CoreStorage partitions with on-board tools. AFAIK for the latter only iPartition and gparted work. Therefore you can't easily reclaim empty space with a lower start block and an arbitrary size and ...


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Your Recovery HD doesn't occupy your whole 3 TB drive. It's disk1s3 in the diskutil listing with the common size of 650 MB. Your Logical Volume Family and the Logical Volume vanished though. To rebuild it start to your Recovery HD or to Internet Recovery Mode, open Terminal and enter diskutil cs list. Copy the LVGUUID To recreate the LV enter diskutil cs ...



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