Can´t delete a partition. Disk utility greyed out.

I have a problem. I can't delete or build a partition on my Macintosh HD. The options for deleting or build a partition are greyed out. I try to boot from a external drive and open disk utility, but still the same problem. I also tried iPartion but it don't work.
I have a iMac (late 2013) with 3 TB fusion drive on OSX 10.9.4

Macs with Fusion drive use CoreStorage to manage disk objects.
You should use Terminale and command
diskutil coreStorage

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http://www.apple.com/support/mac101/help/
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I just got a WD My Passport 1TB External Harddrive and i have already backed everything up to it but im still a little nervous about erasing things off the physical drive on my macbook pro since it says my disk utility is out of space an implying i need to erase items.
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<Personal Information Edited by Host>

Black_Chevy07 wrote:
I just got a WD My Passport 1TB External Harddrive and i have already backed everything up to it but im still a little nervous about erasing things off the physical drive on my macbook pro since it says my disk utility is out of space an implying i need to erase items.
I cant find the options to erase selected items it only shows that i can erase everything.
I mean technically i suppose i could erase everything an have a fresh start since its backed up to my external. But what exactly are the specific items being erased?
I have bought the newest OS X 10.8.2 an worried that it will get erased also an end up having to repurchase it.
Can anyone help me?
If you are trying to delete some files get out of Disk Utility, it is not for that!
How did you backup and what are you trying to achieve?
Please post the exact error messages(s) you have received.

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Disk Utility won't let me delete the partition disk

can some body help me for that ...?

What specific steps have you tried so far. Is your disk full (with only a few GB left on it)? When you go to Disk Utility, are you selecting your drive device (above the listed volumes) or are you selecting your boot volume or other volumes in an attempt to split them up?

Can't resize/repartition in Disk Utility: "No space left on device"

So I'm trying to get my Macbook (early 2008, base model) set up for triple-booting Leopard, Linux, and Windows XP. I've been using Boot Camp for about a month or so, and yesterday I used Boot Camp Assistant to remove the XP partition and make the Leopard partition 100% of the drive. Fine. After that, I was following this guide, and installed rEFIt to be able to choose from three operating systems on boot (as Apple's included bootloader only lets you choose Leo and Windows). Immediately after that (without restarting, maybe I should have) I tried to partition using diskutil from Terminal, with the following command:
*sudo diskutil resizeVolume disk0s2 60G "MS-DOS FAT32" "Linux" 30G "MS-DOS FAT32" "Windows" 21G*
After going through Verifying, Resizing Volume, Adjusting Partitions, it finally giving me an error: "*Resizing encountered error on disk disk0s2 Macintosh HD: No space left on device (28)*", even though my drive is 120GB (around 111.8GiB) and I entered 60 + 30 + 21 GiB = 111 GiB. As per the above guide, I then tried:
*sudo diskutil resizeVolume disk0s2 60G*
The above command should resize my main volume to 60GiB and leave empty space after. It also fails the same way. I then tried doing it using Disk Utility, but it gave me the same error. (Keep in mind that I am in Leopard during all this). I then attempt to restart, to see if maybe rEFIt changed something. I could not restart, due to my Mac not finding a boot drive (flashing folder with question mark). After a while of troubleshooting, I finally burned a rEFIt emergency CD and booted. I selected something like "Repair boot record" and restarted, which got rid of the flashing folder problem, but gave me "Cannot find operating system". I booted from the rEFIt CD again and selected "Boot from hard drive", which finally got me to boot Leopard. I went yet again into Terminal and tried a repairDisk, but I don't think that worked (since I was running off the internal drive). I booted from my Leopard CD and opened Disk Utility and tried: repairing the disk, repairing permissions, and partitioning. Repairing didn't find any errors, but partitioning gave me the same error as before, even though it is impossible to partition more than available in Disk Utility. I am currently sitting in Terminal, running off my Leopard CD, trying to figure out how to fix this. I have tried searching Google to no avail
Anyone have any idea on how to fix this? I could even do a reinstall if necessary, since I have a backup (good old Time Machine).
Summary:
Can boot from drive after booting rEFIt CD.
Can boot from Leopard CD.
Error when trying to partition.
Goal: make 3 partitions.
Thanks much!
Josh

Update:
If I choose my boot partition as the Startup Disk while booted from the Leopard DVD and let it restart, it boots successfully. If I try to restart after that, I get "Error loading operating system" again.

RAID failed - Can't find status in disk utility

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I did order another hard drive that is exactly the same and it should be here in a couple of days. I also know that this is the hard drive that was accidentally ejected while the server was running before, but when the hard drive was put back in, the RAID rebuilt it and has been running fine till now. I am pretty sure that I shut the server off before when the hard drive got ejected and it would boot, so I'm just not sure exactly what this all means as the Hitachi software tells me there is nothing wrong with the drive.
Help please

I checked the status of the server and hard drive by booting off of the 10.4 installation disk, select utilities and disk utility.
I know very little about terminal, however I'm pretty good at dos so I can figure some things out if given some commands.
Anyway, I ran some commands and here are the results:
megaraid -showstatus
MEGARAID CLI version 1.0.12
No cmd argument
Um, so I think I remebered the command incorrectly and I did -showdevices instead. Sorry.
megaraid -showdevices
Physical devices Available = 3
Drive ID Identification Size(MB) Status
0 Hitachi HDS722580VLSA80 78529 Failed
1 Hitachi HDS722580VLSA80 78529 Online
2 Hitachi HDS722580VLSA80 78529 Online
diskutil list
/dev/disk0
#: type name size identifier
0: Applepartitionscheme *153.3GB disk0
1: Applepartitionmap 31.5KB disk0s1
2: AppleHFSServer HD 153.2GB disk0s3
/dev/disk1
#: type name size identifier
0: Applepartitionscheme *2.6GB disk1
1: Applepartitionmap 31.5KB disk1s1
2: AppleDriveATAPI 4.0KB disk1s2
/dev/disk2
#: type name size identifier
0: untitled *467.0KB disk2
/dev/disk3
#: type name size identifier
0: untitled *95.0KB disk3
/dev/disk4
#: type name size identifier
0: untitled *95.0KB disk4
/dev/disk5
#: type name size identifier
0: untitled *95.0KB disk5
/dev/disk6
#: type name size identifier
0: untitled *219.0KB disk6
megaraid -showconfig
Logical Drive RAID Level Stripe Size(KB) Size(MB) Status
0 5 64 156958 Degraded
megaraid -showapater
FW Version = A130
Bios Version = G117
Product Name = MegaRAID SATA 150-4D
Cache Size = 64MB
diskutil checkRAID
No RAID sets found
Thank you for your help. I really appreciate it and so do the teachers and the students!

Can´t delete a partition. Disk utility greyed out.

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