Disk layout

[jimmycap]

Hi

As many, I've installed Yosemite on a new partition I created while running Mavericks. Now that I've installed the GM, I want to erase my Mavericks partition and merge it with the one I'm running Yosemite on. That way, I can reclaim the lost diskspace.

However, the order of my volumes doesn't seem to support simple GUI merge via Disk Utility. A screenshot of my partitions:

To be clear: 'Macintosh' is the partition I'm running Yosemite on, 'Misc' is my old partition which used to have Mavericks. 'Synced' should remain untouched. Some more info from the CLI:

$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_HFS Misc 200.0 GB disk0s2
3: Apple_CoreStorage 199.5 GB disk0s4
4: Apple_Boot Recovery HD 650.0 MB disk0s5
5: Apple_HFS Synced 99.1 GB disk0s6
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh *198.0 GB disk1
Logical Volume on disk0s4
B3326AD8-4A77-4B4B-86A3-D443496C4897
Unencrypted

$ diskutil corestorage list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group AA5659A4-5EAD-4995-A086-100B50FC9415
=========================================================
Name: Macintosh 2
Status: Online
Size: 199484215296 B (199.5 GB)
Free Space: 1119457280 B (1.1 GB)
|
+-< Physical Volume E46EE179-9873-4119-A668-C123E37DE841
| ----------------------------------------------------
| Index: 0
| Disk: disk0s4
| Status: Online
| Size: 199484215296 B (199.5 GB)
|
+-> Logical Volume Family 4A5E67BA-CC86-4CFC-BC9C-27DACB4653C0
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume B3326AD8-4A77-4B4B-86A3-D443496C4897
---------------------------------------------------
Disk: disk1
Status: Online
Size (Total): 198012436480 B (198.0 GB)
Conversion Progress: -none-
Revertible: Yes (no decryption required)
LV Name: Macintosh
Volume Name: Macintosh
Content Hint: Apple_HFS

Thanks for your input.

Jimmy

 

[Weaselboy]

Disconnect any other mounted drives then run the command below in Terminal. That will turn off the core storage and allow the partitions to be manipulated.

diskutil cs revert /

Once the revert is done, reboot to recovery with a command-r boot.

Now launch Disk Utility and go to the restore tab. Drag Macintosh into the source and Misc into the destination and click restore. That will clone one to the other.

Now click under the Apple menu and select Misc and the startup disk and reboot.

You should now be running on Yosemite on the Misc volume. Poke around to make sure everything looks okay.

Now start Disk util and click select the Macintosh volume then click the minus to remove it. Then resize Misc to fill the empty space and apply the change.

That should do it.

You can rename Misc in Finder by select then enter if you want.

Of course backup before doing any of this in case it goes badly.

 

[jimmycap]

Hi

Thanks. I'll try this.

So it is because of CoreStorage that this was not possible?

Jimmy

 

[Weaselboy]

Hi



Thanks. I'll try this.



So it is because of CoreStorage that this was not possible?



Jimmy

Yes exactly.