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The recommended method to expand Macintosh HD is to backup and remove your Windows partition with WinClone, expanding your OS X volume and restoring the Windows partition. This can also be done with dd and fdisk. Both methods require an external drive. A very non-conventional method exists to expand Macintosh HD by using the internal Logical Volume ...


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The partition map is completely valid - the CoreStorage stack is messed up though. After creating a CoreStorage stack (e.g by enabling FileVault) the CoreStorage logical volume group should contain at least one physical volume, one logical volume family and a logical volume. In your case the last two are missing due to CS stack corruption. The output of ...


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The only solution I was able to discover is to erase and format the drive. You can do that by following these steps: Boot into Internet Recovery Mode. Erase the drive using Disk Utility. Reinstall OS X. For more information read How to reinstall OS X on your Mac, then click on Erase a drive and reinstall OS X.


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I don't know if it's possible to remove CoreStorage entirely once a disk's been converted, but it is possible to mount the HFS volumes inside (provided they are not encrypted - if so, you'll also need to use libfvde).


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Though similar to the linked question your partition table has some specific differences: you have a second Recovery HD with a false partition type and your main volume is part of a CoreStorage stack. First you have to determine the proper system versions of the Recovery HDs and then remove the older or - if identical - remove the one with the wrong ...


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Your GUID partition table and the MBR are bogus. Your second partition disk0s2 has the wrong partition type. Instead of FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF the type should be 53746F72-6167-11AA-AA11-00306543ECAC. To modify the partition table destroy and create a new proper one. Afterwards you have to re-add the partitions in the old boundaries but with ...


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You should be able to resize the CoreStorage stack by booting to a second boot volume (e.g. Internet Recovery Mode) after modifying the partition table. Afterwards you have to re-add the partitions in the old boundaries but with proper types. Preparation: Restart to Internet Recovery Mode by pressing alt cmd R at startup. The prerequisites are the ...


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I had this problem, and I think the simplest fix is this: Click the "+" sign on the bottom of the Partition Layout, resize the second partition to what you want, and then select the format to be "Free Space". You will see that the second partition in the layout is replaced by empty space. Then, just select "Apply".



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