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The original post mentions that SSDs have a 1000-2000 cycle limit, which over-simplifies the problem. Individual cells in an SSD may have such a limit, but the SSD implements many different solutions: from over-provisioning and write-levelling to Sandforce's proprietary collection of de-duplication, compression, and data differencing techniques, which it ...


3

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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Read out the following S.M.A.R.T attributes of your SSD with an appropriate tool*: 241 - Total LBAs Written: The total number of 512-byte sectors written during the entire lifetime of the device. 242 - Total LBAs Read: The total number of 512-byte sectors read during the entire lifetime of the device. A second set of attributes is: 174 - ...


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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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The problem turned out to be the PMBR. My first attempt was to copy sector 0 off a GPT formatted memory stick. Examined that with fdisk and it had partition of type EE, but start and end cylinders were the same. I edited partition 1 and accepted defaults. fdisk on mac will report "can't get exclusive access to write sector back, reboot required" It ...


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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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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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I wouldn't suggest continuing to use an external drive for your MBP, apart from anything else it's just not practical. It seems like your internal drive has or is just about to fail. Have you/can you check it's SMART status from disk utility? Either way, I would suggest not worrying about trying to verify or repair it - just try and get your important ...


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My first thought would be that it is a permissions error of some kind… Either the Drive is formatted as NTFS or ExtFS etc The System doesn't have write permissions to the device itself For the first, the simplest, if not cheapest solution would be something like Paragon NTFS or ExtFS or Tuxera NTFS If it is a pure permissions/ownership issue, then for ...


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Boot to the Recovery HD after completing a full back up of the Mac side of things just to be safe. Open Disk Utility Select the Bootcamp partition and delete it. Then drag the bottom right corner of the Mac partition to expand it back to full size. Read the warnings carefully - Disk Utility will tell you which partitions will be deleted and which will ...


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Though the following should be valid for non-encrypted volumes and unlocked encrypted volumes, it doesn't help much because the main volume here is encrypted and locked. So skip to FileVault2-encrypted volumes Non-encrypted volumes Almost no free space on your start volume is a problem. At least 10% free space are recommended. It's indeed possible to ...



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