OS X Mountain Lion :: Can't Partition With Disk Utility - Options Greyed Out
Dec 4, 2014
Bought a used 4 TB Seagate drive, formatted it , checked the speed 150 MB/s read/write and made a partition. Apparently it worked perfect.
However after this first partition the drive is behaving erratically. I can not modify partitions anymore nor delete them. Repair disk is not finding any problem either from the system or from the recovery partition.
I am starting to believe the disk is damaged. Beside the partition problem the disk is behaving fine.
Info:
Mac Pro, OS X Mountain Lion (10.8.5)
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Sep 9, 2014
I had an external hard drive that was formatted to NTFS that was used on my PC but I want to switch it over to mac now. I erased the partition on Windows, then plugged it into my mac but it's stuck at 'preparing to partition the disk'. What should I do, it's been stuck for ages!!
Info:
MacBook Pro with Retina display, OS X Mountain Lion (10.8.5), 13" Late 2012 model
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Aug 28, 2014
I have a 3 TB hard drive which I'd previously partitioned into a 1 TB and a 2 TB partition. I've emptied and erased the 2 TB compartment, but when I go to the partition section on Disk Utility, and select that partition (now called Free Space) and select it, only the + button is alive, and the - button is greyed out.
How can I delete this entire partition?
Info:
iMac, Mac OS X (10.7.3)
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Mar 19, 2012
I'm running Mac OS X (10.7.3). I need to make an image of my boot disk, before I install a larger HDD in my MBP. My boot disk is greyed out in DU:I had already dragged my com.apple.DiskUtility.plist file to a separate disk (I actually found two - both dragged away), and that disk was selected in DU All I want is to create an image to restore to the larger HDD. I have a 4TB Raid drive on which I have created previous images; now I can't.
Info:
MacBook Pro, Mac OS X (10.7.3), iPhone4S, iOS 5.1; iPad2, iOS 5.1.
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Apr 24, 2012
I have a 2TB Western Digital My Book Studio FW800 external that has 5 partitions, connected to my 2011 iMac. I had help doing the partitions and don't really remember the reasoning, but one is just for my SuperDuper! backup, one is Miscellaneous, one for movie clips off my camcorder, one for misc scanned photo's and one for my genealogy research. I back up using Time Machine to a Time Capsule and also to this WD hard drive with SuperDuper!
Recently I'm getting a pop up message that "Mac OS X can't repair the disk "Genealogy"'. And it needs to be reformatted. It's become a read only disk. When I look in Disk Utility it shows all the partitions as "Mac OS Extended (Journaled)" EXCEPT for the one in question. I also noticed that there are a lot of files with "date created" being the same date in 1969! These files may be letters I've written or photo's I added to that partition within the last few years.
I think I have to completely reformat the entire external hard drive to repair this, but I want to make sure. Because it's going to be a major hassle backing it all up to another external (having to get one first) and then figuring out how to make the files that have turned "read only" in that one partition, back to their original state! Does this sound right, that I have to reformat the entire external hard drive? And how do I get the read-only files back to their original state.
Info:
iMac, Mac OS X (10.7.3)
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Apr 6, 2012
I have run the Disk Utility verify function against my system partition. It tells me there are minor issues that need fixing up and I should run the repair disk function, by booting using Command-R and using the Disk Utility to repair the drive.Problem is, when I boot using Command-R and select Disk Utility the partition is shown greyed out and the Verify and Repair options do not work.I think this could be because the partition is encrypted. The utility does not offer me the chance to unlock the partition with my passphrase.How can I repair the filesystem errors on this partition?
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Mar 21, 2012
after i erased the partition in the list in left i couldn't delete a partition in disk utility "File system resize support required, such as HFS with Journaling enabled" error, i think it came with REfit program!?
Info:
iMac, Mac OS X (10.7.3), intel core i5
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Jul 1, 2012
I installed Ubuntu on my Macbook but it didn't really work for me so I deleted it. I used Disk Utility to delete the Ubuntu partition, but when I want to delete a Linux-swap partition I made while installing Ubuntu nothing happens. I press the minus button and it will delete it. But after deleting it just stays there, and I can't change the partition in any way. How can I delete the partition?
Info:MacBookPro, Mac OS X (10.7.4)
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May 6, 2012
I have a MacBook Air with solid state hard drive. The Disk Utility partition tool shows that "This partition cannot be modified". What can I do?
Info:
MacBook Air, Mac OS X (10.6.8), Total Capacity : 121.33 GB (121,332
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Jan 12, 2010
First some background info. I recently purchased a 1TB hard drive for my 13" MBP, and I am about to do a clean install of OSX 10.6 and Win7 64bit on separate partitions.
And I want to setup the partitions before I install using Disk Utility. The reason for this is because I'm under the assumption that when creating a NTFS partition its better for the disk to be blank so it can put the MFT(Master file table) and MFT Mirror wherever it wants instead of some random spot on the disk (that way disk writes will be faster). The MFT thing was true when converting a FAT32 disk to NTFS. Nativity formatted NTFS disks were always faster then ones converted from FAT32, because the MFT was spread out instead of at the start of the disk.
I'm worried that installing OSX and then using the bootcamp utility will cause the MFT on my NTFS partition to end up in a un-optimal place and disk Reads/Writes will be slower.
Ok, so here's my questions.
1.) Should I be using a GUID Partition Table or Master Boot Record(Remember OSX 10.6 and Win7)?
2.) Should I use Disk Utility to Create a the OSX partition and then leave the second partition as Free Space? / Or should I use a third party utility and make the OSX partition and the NTFS partition at the same time?
3.) If I do create the partitions Manualy, will bootcamp still work correctly?
4.) Should I Use Journaled or Case-Sensitive Journaled on my OSX partition?
I know all of the questions were stupid, but there isn't any info on the web about it.
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Oct 9, 2010
I had windows vista installed but suddenly the audio decided to become faulty, after spending a day trying to fix it i realized I have a windows 7 install disc so i might as well just replace vista with windows 7. I didnt take care of vista or ever register it so it became quite a task to upgrade so i just deleted the partition and went to create a new one and just do a full install of windows 7.
I made the partition but the wrong format, so i removed it through boot camp assistant and created another, except now it keeps giving me the "back up the disk and use disk utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using boot camp assistant again" Now, I'd love to do this, except I have no idea what I'm doing and WHY this error has occured. After becoming frustrated I switched from my imac to my macbook pro and received the same error when trying to create a partition. So any help on exactly what I need to do would be a HUGE help. I only use windows for music production (I know, seems backwards, but I use Sony Acid and FL Studio so I'm stuck with Windows)
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Sep 7, 2009
Anyone knows why my external HD (USB disk connected to Airport extreme) does not show up in disk utility? (It sits on my desktop just fine and is fully functional) I' want to erase a partition but now i don't know how.
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Sep 8, 2010
My new 2010 hexacore Mac will have 24G memory, an OWC Extreme Pro 120G SSD (positioned in the lower optical bay) and four 2TB WD RE4 drives. I'll use my old Synology 209 NAS (two 1TB WD Green Raid 1 drives) for TM backups over 1000Mbps Ethernet. Yes, I'll need to upgrade to a larger NAS very soon. This will be my first Mac Pro (have MBPs and iMac) and will be used for web design and development (mostly Adobe CS5 products).
The SSD will be used for boot and application files. I plan to use Disk Utility to create a 1+0 Raid array for data files. For a Scratch disk, should I:
1) create a partition on the 1+0 Raid Array for Scratch
2) partition a chunk of the SSD for Scratch
3) attach a spare external 2.5" WD drive via Firewire 800 for Scratch
Based on my reading, it seems that option 1 makes the most sense but I'm not entirely sure if you can partition a 1+0 array with Disk Utility. I'm pretty sure option 3 is quite silly but wanted to toss out the idea. Lastly, are there any generic recommendations on scratch volume sizing?
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Nov 20, 2009
I have a 640GB external USB hard drive that I use for time machine currently. I would like to go in and add a partition to load movies to and plug it into my PS3. Can I use disk utility to create a new partition without erasing the stuff already on the disk?
And then is it possible to format a partition larger than 32GB as FAT?
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Oct 17, 2010
I have an external hard drive that was used on a PC. I want to use it on a Mac. I went into disk utility and did an erase. (Extended Journaled and in security options changed it to zero out data). I can now use it on the Mac how ever it is telling me that there is 54.1 MB of used space. I want to have access to this. How do I do it?
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May 7, 2009
i want to partition my external hard drive to OS journaled so i can store files over 4 gb.
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May 8, 2012
currently have 2 partitions bootcamp and lion. and have read alot about how if you create said partition it will mess up windows bootcamp. but have yet to see any actual answer as to how to creat the 3rd partition. correct me if wrong but is it better to delete bootcamp creat partition then install bootcamp and restore from system image?
Info:
MacBook Pro (15-inch Late 2011), Mac OS X (10.7.3)
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Dec 26, 2010
I own an iMac with a 250 GB HDD along with a Macbook that originally had a 120 GB HDD. So when I purchased my 1 TB external HDD this summer, I partitioned the external so I could back up both my iMac and Macbook via Time Machine. Seeing how small the Macbook HDD was, I allocated roughly 300 GB of my external to it, with the iMac getting the rest.
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Mar 8, 2009
I'm trying to partition my hard drive. It's currently one whole 160 GB unit. I want to split it into a 135 GB partition and a 25 GB partition.
Currently Used Disk Space: 95.10 GB
Currently Free Disk Space: 53.51 GB
However, whenever I try to create the 25 GB partition in Disk Utility (formatted as Mac OS Extended - Journaled) it gives me an error message:
And here's a screenshot of my hard drive's info:
What's going on here?
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Apr 2, 2009
Originally I had 2 partitions on the internal 500gb hd in my MBP, one was 455gb the other was 10gb that I used to mess around on. I do not remember what format the small partition was in last, it may have been FAT32. I wanted to delete the small partition and consolidate into one partition. My OSX partition is formatted macos extended. I went to Disk Utility and deleted the small partition by selecting it and clicking "-." There was grey space where the partition used to be. No problems here. Most of the options in Disk Utility are greyed-out.
I cannot select a different partition scheme. When I try to resize the partition either by dragging it to cover the grey space or by manually typing in a larger size, there is no way to apply the changes. The "Apply" button is continually greyed-out (See Image). If I try to resize the partition and then close the window, Disk Utility alerts me that I have an operation in progress and that unsaved changes will be lost. Disk Utility is not letting me resize my main OSX Partition, it appears that I do not have appropriate permissions to make this change - I am the only user/admin of this machine.
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Feb 3, 2010
I having trouble resizing an external harddrive of mine. It is a 500gb Lacie drive, and inside it has two partitions: time machine (250gb) and my stuff (250gb). I want to make time machine 150gb and make My Stuff occupy the remaining space. However, when I enter Disk utility, there is no dot between the partitions that I can drag. When I pull the corner, the disk gets smaller, but after resizing there is still a blue rectangle outlining where the old disk was. The partition "time machine" is used for time machine backups, but I have deactivated backups in Preferences, and Time Machine is currently "off". I have included an image for clarification. How can I resize the partitions the way I want them?
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Jun 16, 2008
i am trying to format a brand new 120 GB hard drive via an external USB 2.0 enclosure. About 25 minutes ago, I selected the "erase" option and slected the Mac OS Extended (Journal) Volume format. For the last 25 minutes, disk utility has been saying that it's creating a partition map. It's doing nothing.
I have reason to believe my enclosure may be faulty. (I had a similar problem on an old hard disk and thought that the problem was with the disk; now I know.) I need to know: How do I disconnect/eject the hard disk without damaging it? The eject option in Disk Utility is grayed out. If I attempt to quit Disk Utility I get a warning telling me I could leave my disk inoperable.
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Nov 21, 2008
I installed Ubuntu on my iMac, and it made 2 new partitions: DISK0S3 and Linux Swap. Here's what my disk utlity looks like: When I try to remove Linux Swap, it says that the partition (map is too small. When I try to remove DISK0S3, nothing happens and it keeps running forever before I press +Q to quit.
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Aug 28, 2009
I would like to know the difference between the options 'erase' and partition' in disk utility. Under 'erase' there are several options: under 'security options' there are 4 options: don't erase data, zero out data, 7-pass erase and 35-pass erase.
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Sep 5, 2009
I have installed 2x Intel X-25M Gen2 (SSDSA2MH160G2C1) 160GB SSDs in RAID 0 (striped) in my 17" uMBP. Second SSD was installed using a MCE Optibay in place of CD-ROM. I used the OSX Disk Utility to create the stripe partion with no problems. I currently have 10.5.8 loaded and will be loading 10.6.0 tonight and doing some simple GeekBench benchmarks.
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Nov 19, 2009
I have a Mac Mini and on the internal drive I have Snow Leopard installed on the first partition and I'd like to install Snow Leopard Server on the same drive on another partition (I'm new to Mac, this is my only machine and my only drive, and this is only for testing purposes, so don't bother with stupid questions about why etc).
The problem I have is that I can't seem to create the necessary partition in Disk Utility. I have shrinken the Snow Leopard partition to get some free space and I've created a second partition for Server but for some reason I can't choose the options button to select GUID. The button is grayed out, see attached image.
What am I doing wrong? Or is it not possible to have two OS partitions on the same internal drive?
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Dec 3, 2009
I just bought a 1TB Lacie d2 Quadra and want to partition it in 2 partitions. As said in the instructions, if you want more than 32 GB on my "PC" partition I need to use Mac's disk utility. The thing is I don't have the option to partition in NTFS, only MAC OS extended (journaled, etc..) and FAT32. But I need a lot more than 32 GB for my PC stuff. Now how can I do that? I need to backup some stuff from my Windows XP (bootcamp) really soon! And I want to be able to plug it in another PC and be able to transfer both ways. How can I get the NTFS partition option with disk utility? or is there other softwares for that? In all what I want is about 500 GB for MAC and 500 GB for PC (NTFS)!
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Apr 13, 2010
First off I am new to Mac's and I am trying to repartition my harddrive. i did it once before and was successful and when i tried to adjust the size, windows kept getting errors.
On the advice of my friend he told me to completely wipe out my machine and reinstall Mac OS 10.4. I have since reinstalled SL 10.4 and downloaded bootcamp. However, I do not see a boot icon in my applications or utilities folder, but I do see a disk utilities icon.
When I click that and click the only hard drive that is there and try and partition it, the slide bar will not work for me to divide the hard drive into the size i want and none of the fields or dropdown boxes will work.
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Jun 7, 2010
I just restore my Mac OS to a single partition and then I tried re-partitioning but it's giving me an error.
I've tried several times, tried using different sizes every time. My HD's capacity is 250GB, and I've got 108.95GB free. So I am sure that making a new partition of 35 - 40 GB is not a big deal. I also tried using Disk Utility, both from the Mac OS install disc and while using the Mac OS itself, but it keeps giving me this error. I do not want to format my Macintosh HD's partition because I don't have an external HDD on me at the moment so I will not be able to back up. I have a lot of important data that can not be deleted.
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Aug 22, 2014
This is what get when I go into Disk Utility and I want to delete the partition Macintosh 2. I see these 3 things. The "Logical Volume Group" and the 2 partitions. Where is my main hard drive? How do I get rid of the Macintosh 2.
Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.4)
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