I created a partition when I was running OS X Yosemite beta. Now I can't seem to delete or resize the partitions. Anyone know what I can do to delete it? I've tried erasing it and repairing the disk. Neither has helped. I've attached a screenshot.
Likely its been changed to Core Storage as part of the Yosemite install, you will need to run a couple of terminal commands to remove the CS Logical Groups and Volumes before DU can re-partition/erase etc. I don't have the commands to hand but I'm sure a search on here will find them...
You may want to have a look at the following article - http://awesometoast.com/yosemite-core-storage-and-partition-woes/ It seems that Yosemite tends to convert the boot partition into a corestorage volume, so you need to put in terminal command to revert it back. no data loss should occur but just to be safe, do a backup before performing this.
Disconnect any other drives, then run the command below to turn off core storage on the drive then you should be able manipulate normally in Disk Util. Code: diskutil cs revert /
So I ran this in terminal to try and fix it.. Code: diskutil corestorage revert B1F66C16-978D-452C-9D9C-CB3E14C8BDFD I then get this error: Code: Started CoreStorage operation on disk2 OS X Yosemite Error: -69741: The target disk isn't eligible for reversion because it wasn't created by conversion or it is not part of a simple setup of exactly one logical and one physical volume What else can I do?
Based on your screenshot, "Macintosh HD" was converted as an LVG but the error is on "OS X Yosemite" Can you post the result of: Code: diskutil cs list
Code: CoreStorage logical volume groups (2 found) | +-- Logical Volume Group AC9F4D1F-2370-412F-A7E7-F96D401DF5D4 | ========================================================= | Name: Macintosh HD | Status: Online | Size: 208992047104 B (209.0 GB) | Free Space: 15044608 B (15.0 MB) | | | +-< Physical Volume 1E4B15E1-5FCC-4174-8B7F-975FD20C30A7 | | ---------------------------------------------------- | | Index: 0 | | Disk: disk0s2 | | Status: Online | | Size: 208992047104 B (209.0 GB) | | | +-> Logical Volume Family 91824DA9-7F03-481F-9497-935726743978 | ---------------------------------------------------------- | Encryption Status: Unlocked | Encryption Type: AES-XTS | Conversion Status: Complete | Conversion Direction: -none- | Has Encrypted Extents: Yes | Fully Secure: Yes | Passphrase Required: Yes | | | +-> Logical Volume FD6D8A11-7EB4-4ABF-81B8-3BF262B19B51 | --------------------------------------------------- | Disk: disk1 | Status: Online | Size (Total): 208624680960 B (208.6 GB) | Conversion Progress: -none- | Revertible: Yes (unlock and decryption required) | LV Name: Macintosh HD | Volume Name: Macintosh HD | Content Hint: Apple_HFS | +-- Logical Volume Group F2BB7181-B7F8-4CAC-92E2-6E3C2FB16CB9 ========================================================= Name: OS X Yosemite Status: Online Size: 40498270208 B (40.5 GB) Free Space: 14843904 B (14.8 MB) | +-< Physical Volume 632B2624-CC63-4E42-97FC-32225755D61F | ---------------------------------------------------- | Index: 0 | Disk: disk0s4 | Status: Online | Size: 40498270208 B (40.5 GB) | +-> Logical Volume Family 4A3CC433-41F4-4359-965F-9DC694BD7076 ---------------------------------------------------------- Encryption Status: Unlocked Encryption Type: AES-XTS Conversion Status: Complete Conversion Direction: -none- Has Encrypted Extents: Yes Fully Secure: Yes Passphrase Required: Yes | +-> Logical Volume B1F66C16-978D-452C-9D9C-CB3E14C8BDFD --------------------------------------------------- Disk: disk2 Status: Online Size (Total): 40131100672 B (40.1 GB) Conversion Progress: -none- Revertible: No LV Name: OS X Yosemite Volume Name: OS X Yosemite Content Hint: Apple_HFS It says the logical volume is not revertible.
Looks like you have Filevault switched on. Are you planning to delete the "OS X Yosemite" partition? Can you boot into "OS X Yosemite" and turn off filevault first? http://support.apple.com/en-sg/ht4790
Assuming you want to delete the Yosemite partition, run this command either from recovery or from Mavericks. The earlier revert command I gave you won't work because you have FileVault encryption turned on for the Yosemite partition. Code: diskutil cs delete F2BB7181-B7F8-4CAC-92E2-6E3C2FB16CB9
When I boot up by pressing Option... I'm no longer presented with OS X Yosemite. I see an "EFI Boot" option. EDIT: This worked perfectly! Thanks!