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13

If I understand your question correctly you are trying to resize the volume group or actually one of the volumes within a group. From what I could gather your disk was converted to a CoreStorage Volume. Could you please verify that by issuing the following command in a terminal and check if you get a similar output to the one in the picture: diskutil ...


10

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 ...


8

The following diskutil cs resizeStack command is vastly undocumented and as such potentially destructive. There might be an easy way outlined first and a long winding, time consuming hard way. Please backup your Mac OS X before proceeding. The not-as-long-as-expected way: A 2nd computer or an iPhone with the stackexchange credentials to enter the site ...


6

I had the same issue since the beta and the official release did not solve this issue. In the terminal I had the following output: diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *251.0 GB disk0 1: EFI EFI ...


6

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 ...


5

After gaining some experience with CoreStorage volumes, I reworked my first answer to generalize and facilitate it by adding some scenarios and deleting some dispensable steps. Basically there is one undocumented command to resize or expand a CoreStorage volume group and an inherent logical volume: diskutil cs resizeStack LVUUID size The command ...


5

Yes you can repartition without losing data. Using Disk Utility, perform a repair on your drive to make sure the drive is free of errors (even better, use Diskwarrior if you have a copy). Then unmount your drive but don't eject it. Select the drive in the left hand pane, then go to the Partition tab. On the Partition Layout section click on the "+" to create ...


4

The Mac hardware stores the boot volume in NVRAM so you could power off the computer and then reset things by holding the Command Option P R keys down. Once you've heard two boot chimes you can release things and if the Mac OS X volume is viable it will boot first. If that doesn't work then it's likely that the OS X volume has issues and the system is ...


4

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 ...


4

I also asked on the developer forums and got an answer there (iOS/OS X dev account required to view). The solution was to boot into a recovery partition (⌘ + R), and change the boot disk from the Apple menu. It needed to be changed to my Mavericks install instead of my Yosemite install.


4

Are you aware of this thread at Apple Support Communities? https://discussions.apple.com/thread/6601122 According to this, Yosemite changed the way the Recovery Partition works when you have Core Volumes. It no longer shows in the list of drives when you boot with the option key pressed. The way to do it is by pressing Command-R. I don't have Fusion ...


4

Quick fix: Fake Bootcamp. "I partitioned the free space (that OS X couldn't use) as MS-DOS, Bootcamp Assistant thought it was Windows, and was able to remove this MS-DOS partition and restore Mac OS to a single partition." This is the easiest solution, so try that first. No luck? Long fix: In my case, I couldn't get Disk Utility to create the ...


4

It seems that i did it using this post Unable to Resize Partitions and your comment. Although it wasn't obvious for me, what I did was this: diskutil corestorage resizeStack LOGICAL_VOLUME_UUID 0G 0G to expand it to the maximum available space that is free. diskutil corestorage resizeStack can provide with info.


4

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 ...


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 ...


3

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.


3

I have never, and I mean never, even back to the "classic" Mac O/S days (going back to system 6) partitioned a drive into smaller chunks. Performance gains were supposedly about different parts of a rotational drive being faster than others (EG quicker seek to sectors near the physical hub). There may also have been some O/S speed gains in some O/S if you ...


3

I have run Mavericks/Yosemite on a 64 GB SD card and after a clean install, there was about 20-30 GB free. I would say that you could install Yosemite on a 20 GB partition, but I would not recommend anything less than 30 GB.


3

There are at least two approaches to solve your problem: One is potentially destructive, vastly undocumented and i don't know if it works (1) and the other one is for sure destructive (2). So please backup your Mac OS X and your Ubuntu partition if necessary. Requirements: USB thumb drive with a full working Mac OS X and iPartition installed or a Linux ...


3

You can't use filesystem commands (cp, mv, ls, etc.) on devices (/dev/*). If you want to copy everything, bit-for-bit, from volume to volume, you'll need an app like Super Duper or Carbon Copy Cloner.


3

Yes! As the disk is the correct format, it will show in the disk list in the installer (click Show All Disks). You can install any version of OS X on a partition of the correct format, regardless of where the partition is located. The OS X installer doesn't partition the disk for you though; do this first in Disk Utility.


3

I had a similar problem. I created a 30 GB partition and after deleting it there was unused space. I couldn't manually get the original full partition back because of disk errors. So I booted into Recovery (Command + R), repaired the disk with Disk Utility and then the resize to original was no problem. Rebooted and now back to normal. Had no need to ...


2

There is no need to delete the CoreStorage Logical Volume Group. Just resize it: Have a backup! Reboot into Internet Recovery Mode (hold Option-Command-R) as the machine is restarting). You'll eventually be presented with a Max OS X Utilities window. In the menu bar along the top of the screen, click Utilities -> Terminal. At the prompt, enter ...


2

You can use the same folder for Mac and Windows versions of iTunes. I would recommend use the exactly same version though. Here is more info on how use it through the network: http://hints.macworld.com/article.php?story=20070424081346722. It's the same logic, but you will be using the same local folder instead a network shared one.


2

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 ...


2

sudo bless --folder /Volumes/yourdisk -label "Title here" bless is the command to set startup disk options. --folder specifies the disk and -label assigns it a label.


2

I would use the terminal to sort things out if you don't see what's happened in Disk Utility. diskutil list From there, you can see all the names and numbers OS X has given to the volumes/partitions. Eject them all (except for the booted OS). diskutil eject disk2s2 etc... At that point, you might need to clean up the bad mount points. ls -l /Volumes ...


2

This might seem like a long shot, but it was also the only option for me to install Windows into my Bootcamp partition a little while back. It's also the only option for a Mac that used to have an optical drive but no longer does, since for some reason these devices are no longer able to boot from USB. Use Disk Utility to create a FAT partition a little ...


2

Using this option, you'll endup with a whole disk encryption. It uses OSX CoreStorage volume management technology and XTS-AES 128-bit encryption, so it's software. Edit : As pointed Alan Shutko, since 2011 Intel added an Intruction set to intel processor to do AES encryption.


2

Reinstall Windows again using BootCamp, then remove it properly using BootCamp Assistant. It takes time, but solves the problem. Dummy Windows entries are gone forever.



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