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If your partition turned into Logical Volume Group (you can't resize or delete Yosemite partition), you can revert partition type with few command line. Open Terminal type "diskutil corestorage list" Find Yosemite partition UUID string. type "diskutil corestorage revert " Your Yosemite partition is now revert to default partition type. Now, you can resize ...


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Yes. Reformat and partition the HD. When you unplugged the drive, you severely damaged the directory information on the 'My Passport' partition, rendering it unusable. If there is nothing of value on the drive, this is your best bet. In addition, make sure to reformat with Mac OS Extended (Journaled) selected.


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I contacted Apple Support and got this solution directly from them. It's a simple fix, actually. WARNING: ONLY FOLLOW THESE INSTRUCTIONS IF YOU HAVE EITHER: Backed up the precious contents of your drive, or... After a thoughtful and deliberate count to 10, decided you couldn't care less about the worthless contents of your drive. Reboot into Recovery ...


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When it's telling you to review your account I think it's just telling you to go into the Apple account settings and confirm some of your account details. Probably just wants you to enter the three digital code from the back of your card, or something like that to confirm the payment details.


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The hard drive randomly started working again after an hour or so left alone.


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I don't have enough points to add a comment yet. How long ago did the drive stop mounting? I am going to ask the basic questions: Have you disconnected the drive and rebooted? Do you by any chance have any other computer you can try it on? Have you tried using diskutil from the command line? This is an older post, man diskutil looks like the utility ...


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I used Disk Warrior and it fixed the problem.


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I suggest you borrow or purchase an inexpensive external DVD drive to see if you can boot from the install disc. This Sanyo drive is only $28US and works just fine read/write on all the Macs I've attached it to, old and new. I can't guarantee you will be able to boot from it, as I've never tried that, but if it won't boot your laptop you can always send it ...


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If your MacBook is capable of upgrading to 10.7 or newer (the current 10.9, OS X Mavericks is available for free from the AppStore, 10.7 - Lion and 10.8 - Mountain Lion are for sale on DVD at the apple online store for under €20,-) you can use the disk utility from the recovery partition (after installing a newer version of OS X, in this case from a bootable ...


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You should try to create a bootable USB stick with some kind of recovery LiveCD (Ubuntu, BackTrack, ...) I recommend using Ubuntu because it is the easiest to create. There is a little tutorial on Ubuntu's website: http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx (If you Have trouble be sure to ask a question on AskUbuntu) After you ...


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Try to run Disk utility upon system start up, this may increase functionality. So delete second volume and extend Macintosh HD by dragging it down to make as a single unit. Also repair disk and permissions. From the screenshot I noticed that you selected your boot disk, which is not possible to edit while OS is running, however second split of HD should be ...


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Actually Mavericks since 10.9.3 has had a filesystem bug where files are not deleted properly, thus the disk "fills up" with files that don't exist, and then when you try and repair it it fails the first time, but may work if you try again.


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The problem is that the system goes into a fail-safe mode when the directory structure cannot be presumed to be safe for a new write. You did the correct triage step by booting into recovery mode and attempting to repair the volume with Disk Utility. At this point, you should back up any files you need. Test that your backup is complete and run Disk ...


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Well, just I case this happens to someone else. It seems Yosemite (beta 1) messes up with the HDD, as Fyrefly pointed out, Apple_CoreStorage represents two disks acting as one (for speeding up a HDD with an SSD). My MacBook Pro only has one HDD so that's strange. After I deleted the recovery partition I rebooted my MacBook Pro and it died. So the only ...


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The simple solution is to reformat the whole disk and reinstall Mavericks from scratch. Doing so will get your Mavericks recovery partition back and you can migrate your data back from time machine. I get the feeling you don't want to do that however?


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I think most disk imaging utilities will do what you are looking to achieve. Try Partition Magic or Macrium Reflect. In fact I know for sure that Partition Magic will automatically estimate the needed and resize the space as needed based on the original hard disk (and its partition) and the destination disk.


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If Disk Utility can't repair the volume, it means that its directory structure is damaged to point where it can't find all catalogued files any more. While you can now try copying all files to another disk, this may result in lots of errors, and you may also not get all files that are still theoretically recoverable. Therefore, I recommend that you use the ...


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For me, Disk Utility on Snow Leopard works at repairing permissions for drives but not on Mavericks. Strange.


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I highly recommend completely backing up the machine before attempting this, either using TM with no exclusions set, or better yet, cloning the whole drive using a program like Carbon Copy Cloner. Unmount the Logical Volume: sudo diskutil unmount force /dev/disk1 Remove the Logical Volume Group and all of its contents: sudo diskutil cs deleteLVG ...


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The HDD cable physically attaches the internal drive (2.5'' 9mm traditionally for notebooks) to the logicboard, typically via the SATA (II or III) bus. The cable can wear out and cause I/O problems, such as you've as described. Here is an image of the cable via iFixit. I added brief descriptions: Using iFixit, identify your machine's model and find the ...


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Testing cabling is more of an empirical exercise. First you disconnect and reseat both ends of the cable. Next, you put in the new cable and if the problem goes away it was the cable. If you suspect the cable on an intermittent problem you replace the cable and leave it in after reseating doesn't reduce the frequency of the issue. I'd start with reseating ...


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This resolved it: sudo chflags nohidden /Users


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Make sure the Users & Groups > Advanced Options options for your moved user account is correct. Launch System Preferences.app Select Users & Groups Unlock the panel Control + Click on the moved account and select Advanced Options…* Update Home directory: to the correct, full, path to your moved home folder.



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