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jamesjingyi

macrumors 6502a
Original poster
Dec 20, 2011
848
155
UK
I don't know how it has happened but my disk utility seems to have gone wrong. It has greyed out bits and a large free space which I see no way of extending into. It happened after I tried to create free space to install Windows but it seems to be permanent after this. Can anybody help?

Attached is a screenshot of what disk utility looks like
 

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maflynn

macrumors Haswell
May 3, 2009
73,617
43,616
It looks like you're using a fusion drive, I think that may have something to do with your inability to resize it. The text on the right says the full size of the fusion drive is not available for repartitioning.

I don't use fusion drives so I'm not familiar with the issues faced with fusion drives and resizing partitions.
 

jamesjingyi

macrumors 6502a
Original poster
Dec 20, 2011
848
155
UK
It looks like you're using a fusion drive, I think that may have something to do with your inability to resize it. The text on the right says the full size of the fusion drive is not available for repartitioning.

I don't use fusion drives so I'm not familiar with the issues faced with fusion drives and resizing partitions.

I have partitioned before and there were loads of errors but now it refuses completely. I can't even create a drive in the free space... Argh it annoys me :(
 

Fishrrman

macrumors Penryn
Feb 20, 2009
28,508
12,640
OP:

First things first -- make sure the internal drive is BACKED UP.

You might try this terminal command that turns off CORE storage:
diskutil cs revert disk1

That may work.

If it doesn't, what I would do:
- Create a bootable cloned backup using either CarbonCopyCloner or SuperDuper
- Boot from the cloned backup
- Reinitialize the internal drive and be sure CORE storage was disabled
- RE-clone the contents of the cloned backup -back to- the internal drive
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,197
15,737
California
I have partitioned before and there were loads of errors but now it refuses completely. I can't even create a drive in the free space... Argh it annoys me :(

Run the command below in Terminal and paste the output up here so we can work through this with you.

If you have not already, do a full backup because we will likely end up erasing your drive here.

Code:
diskutil cs list
 

jamesjingyi

macrumors 6502a
Original poster
Dec 20, 2011
848
155
UK
Run the command below in Terminal and paste the output up here so we can work through this with you.

If you have not already, do a full backup because we will likely end up erasing your drive here.

Code:
diskutil cs list

Right. Firstly I backed up everything. Secondly I formatted everything. I booted from a install USB and I still cannot resize. I will try and post it through the apple support safari bit

----------

CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 238A24D8-4691-4F3E-8214-6C6077ECE094
=========================================================
Name: MacintoshHD
Status: Online
Size: 816256983040 B (816.3 GB)
Free Space: 65536 B (65.5 KB)
|
+-< Physical Volume A93EAA50-905D-431B-A91D-73C35FD6A298
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 127691702272 B (127.7 GB)
|
+-< Physical Volume AB8DDDF7-DE03-4D32-AFDE-CCA1006EB93A
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 688565280768 B (688.6 GB)
|
+-> Logical Volume Family 6FFEE567-124C-456F-A103-6E44CB90785B
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume ACEE7C82-5769-4009-9F23-DD7A8014A0C1
---------------------------------------------------
Disk: disk3
Status: Online
Size (Total): 810364960768 B (810.4 GB)
Conversion Progress: -none-
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
 

Fishrrman

macrumors Penryn
Feb 20, 2009
28,508
12,640
OP wrote above:
[[ Right. Firstly I backed up everything. Secondly I formatted everything. I booted from a install USB and I still cannot resize. I will try and post it through the apple support safari bit ]]

Did you try this:
diskutil cs revert disk1

????
 

jamesjingyi

macrumors 6502a
Original poster
Dec 20, 2011
848
155
UK
OP wrote above:
[[ Right. Firstly I backed up everything. Secondly I formatted everything. I booted from a install USB and I still cannot resize. I will try and post it through the apple support safari bit ]]

Did you try this:
diskutil cs revert disk1

????

It says 'disk1 is not a CoreStorage Logical Volume'
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,197
15,737
California
Right. Firstly I backed up everything. Secondly I formatted everything. I booted from a install USB and I still cannot resize. I will try and post it through the apple support safari bit.

Looks like you made your own Fusion drive yes?

Okay... let's nuke this and start over. Copy this down first then command-option-r to Internet recovery. Once recovery comes up start Terminal from the Utilities menu and enter the following commands one after the other.

Code:
diskutil cs deleteVolume ACEE7C82-5769-4009-9F23-DD7A8014A0C1

Code:
diskutil cs delete 238A24D8-4691-4F3E-8214-6C6077ECE094

That will kill the Fusion drive. Now start Disk Util and reformat both drives that you should now be able to see individually (I think this happens on its own after the commands).

That will leave you with the two bare drives. Now you can rebuild your Fusion like you did before and restore your backup.
 

jamesjingyi

macrumors 6502a
Original poster
Dec 20, 2011
848
155
UK
It may help that this is a DIY Fusion drive.. And that I tried to install Windows and it didn't work... 3 times...

----------

Looks like you made your own Fusion drive yes?

Okay... let's nuke this and start over. Copy this down first then command-option-r to Internet recovery. Once recovery comes up start Terminal from the Utilities menu and enter the following commands one after the other.

Code:
diskutil cs deleteVolume ACEE7C82-5769-4009-9F23-DD7A8014A0C1

Code:
diskutil cs delete 238A24D8-4691-4F3E-8214-6C6077ECE094

That will kill the Fusion drive. Now start Disk Util and reformat both drives that you should now be able to see individually (I think this happens on its own after the commands).

That will leave you with the two bare drives. Now you can rebuild your Fusion like you did before and restore your backup.

Woo I thanks so much!!!! I'm gonna refusion them now :D

----------

Looks like you made your own Fusion drive yes?

Okay... let's nuke this and start over. Copy this down first then command-option-r to Internet recovery. Once recovery comes up start Terminal from the Utilities menu and enter the following commands one after the other.

Code:
diskutil cs deleteVolume ACEE7C82-5769-4009-9F23-DD7A8014A0C1

Code:
diskutil cs delete 238A24D8-4691-4F3E-8214-6C6077ECE094

That will kill the Fusion drive. Now start Disk Util and reformat both drives that you should now be able to see individually (I think this happens on its own after the commands).

That will leave you with the two bare drives. Now you can rebuild your Fusion like you did before and restore your backup.

Oh wait... Umm when I do distil list, there are still other volumes from /dev/disk0 to /dev/disk15
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,197
15,737
California
Oh wait... Umm when I do distil list, there are still other volumes from /dev/disk0 to /dev/disk15

Don't worry about those. Just use the commands I gave you to start over. Those are likely other "virtual" hidden volumes for things like the EFI partitions etc.

If you have any externals, disconnect them while you are doing this.
 

jamesjingyi

macrumors 6502a
Original poster
Dec 20, 2011
848
155
UK
Don't worry about those. Just use the commands I gave you to start over. Those are likely other "virtual" hidden volumes for things like the EFI partitions etc.

If you have any externals, disconnect them while you are doing this.

Ok, thanks so much for your help!
 
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