Cannot resize main partition

I installed Bootcamp and obviously Bootcamp Assistant reduced my main partition so that it could create a new one for me to install Windows on. I finished my project and decided I wanted the space back. Something must have gone wrong when the Bootcamp Assistant removed Bootcamp, because I am left with a 40Gb empty space on my HD.
I can't get Disk Utility to resize my main partition into the empty space. I have looked at many "how tos" and they all show a resize handle at the bottom-right of the partition that can be dragged to expand the partition into the empty space. I don't see that.
I tried running Disk Utility from the recovery mode Command-R on startup, but I have the same issue there as well.
Any help appreciated. I would prefer not to have to wipe everything and start again.

Dr Mac, thanks:
eds-macbook-pro:~ ed$ sudo gpt -r -vv show disk0
gpt show: disk0: mediasize=251000193024; sectorsize=512; blocks=490234752
gpt show: disk0: PMBR at sector 0
gpt show: disk0: Pri GPT at sector 1
gpt show: disk0: Sec GPT at sector 490234751
      start       size index contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6
         40     409600      1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640 410430536      2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
410840176    1269536      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
412109712   78125007
490234719         32         Sec GPT table
490234751          1         Sec GPT header
eds-macbook-pro:~ ed$ diskutil resizevolume /dev/disk0s2 limits
Volume format does not support resizing

Similar Messages

Cannot resize system partition due to recovery partition

Hello.
I have a 500GB HD (momentus XT) that replaced my default 320GB HD.
i cannot resize the system partition due to the recovery partition. System keeps on telling me that "map is too small".
Tried diskutil under osx, under lion bootable recovery usb stick, under diskutil through console.
Here is what diskutil tells me.
~ > diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            319.2 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
~ > diskutil resizeVolume /dev/disk0s2 400G
Started partitioning on disk0s2 Macintosh HD
Verifying the disk
Checking file system
Performing live verification
Checking Journaled HFS Plus volume
Checking extents overflow file
Checking catalog file
Checking multi-linked files
Checking extended attributes file
Checking volume bitmap
Checking volume information
The volume Macintosh HD appears to be OK
Resizing
Error: -5341: MediaKit reports partition (map) too small
I want to resize the partition to use the remaining new space i have, of course, and create a bootcamp part.
I am wondering if i can kill the recovery partition without destroying my lion. As i have the recovery transfered successfully to usb stick using the apple utility, i am able to use it anytime.
But... just wondering if that would crash my OS or not.
Or, if anyone sees a way to move the recovery partition to end of the HD so that i can enlarge successfully...

Thanks to you both, luckily there's only 600GB on that drive at the moment.
I was wondering, though, why won't it let me make it bigger?
I already had a 1TB partition in the space below it. The screenshot shows me having already deleted it - but still no option to resize the other (larger) 2TB one.
If there is a reason why I can't resize now, then I can take that advice and try and make sure it doesn't happen when I reformat it again.
I would understand if the partition were MBR, but it's not, it's a GUID Partition Table (bottom right), so I'm confused - what is it's problem? ;-)

Cannot resize guid partition

I can't resize my partition on a GUID partition table.
It says "This partition can not be modified"
I don't understand this as I specifically wiped this drive from being a MBR (DOS compatible) and reformatted it with GUID.
Can anyone explain this or what I need to do to resize it? (Hopefully not including wiping the entire drive again)

Thanks to you both, luckily there's only 600GB on that drive at the moment.
I was wondering, though, why won't it let me make it bigger?
I already had a 1TB partition in the space below it. The screenshot shows me having already deleted it - but still no option to resize the other (larger) 2TB one.
If there is a reason why I can't resize now, then I can take that advice and try and make sure it doesn't happen when I reformat it again.
I would understand if the partition were MBR, but it's not, it's a GUID Partition Table (bottom right), so I'm confused - what is it's problem? ;-)

Cannot resize root partition

i used gparted live in order to maximize the size of root partition but i can't
Device Boot Start End Blocks Id System
/dev/sda1 2048 718847 358400 7 HPFS/NTFS/exFAT
/dev/sda2 * 718848 586656347 292968750 7 HPFS/NTFS/exFAT
/dev/sda3 612048894 976771071 182361089 5 Extended
/dev/sda4 586657792 612046847 12694528 83 Linux
/dev/sda5 967215104 976771071 4777984 82 Linux swap / Solaris
/dev/sda6 612048896 967213055 177582080 83 Linux
Number Start End Size Type File system Flags
1 1049kB 368MB 367MB primary ntfs
2 368MB 300GB 300GB primary ntfs boot
4 300GB 313GB 13.0GB primary ext4
3 313GB 500GB 187GB extended
6 313GB 495GB 182GB logical ext4
5 495GB 500GB 4893MB logical linux-swap(v1)
i minimize the size of sda6(home folder) in order to give more space to my root partition sda4 but i can't .gparted don't give the option to add the unallocated space to sda4.when i tried to adjust the partitions the swap partition was off
Last edited by kosgeter (2014-04-30 21:52:13)

That's a no-no, you can't do that
To increase the size of sda4, there must be continuous free space after it.
In your case it's like
sda4
sda5
sda6
You first reduce sda6 and you get free space after it, you need to move sda6(not just resize it). Also you will need to delete sda5(which is your swap) and remake it.
Example:
sda4 - 10GB
sda5 - 4GB
sda6 - 100GB
delete sda5 and resize sda6:
sda4 - 10GB
4GB free space
sda6 - 50GB
50GB free space
move sda6:
sda4 - 10GB
50GB free space
sda6 - 50 GB
4GB free space
resize sda4 and create swap(sda7):
sda4 - 60GB
sda6 - 50 GB
sda7 - 4GB
Might I suggest that you use console tools instead of gparted(imho gparted is buggy). The tools in the arch install iso should do fine. Also you can't resize mounted partitions, so you shouldn't try to touch your arch root partition while using it
Last edited by rand_x0r (2014-05-01 16:06:31)

Cannot resize the partition C

Hi,
I have a problem with resizing my partition C on Windows 8.1. It only has 28 GB and I have run out of every space. The Disc manager for resizing partitions is not working (every option for a Disc C is greyed out). I downloaded three partition managers: Paragon,
Aomei and one more (don't remember the name, cause I deleted it already). All of them were supported by Windows 8.1 32 bit. And still it was not possible to do anything with the disk C, even though I have a lot of unallocated space to use.
I also deleted disk D, so that only Disk C was left, and still I couldn't allocate any space to it, only to shrink it.
Can anyone tell me what else can I do?
It is driving me crazy already. Help please.
Marta

Hello,
I used aomei partition assistant before in my windows 8.1, it worked well. do you use "resize partition" in aomei partition assistant to extend you c drive? if you do like this, the unallocated space on your hard disk should be contiguous behind
the partition c, or you can't extend partition. but if the unallocated space is not contigous behind partition c, you an use extend partition wizard or merge partitions to extend partitionc
extend partition wizard: http://www.disk-partition.com/windows-8/change-partition-size-windows-8.html
merge partitions: http://www.disk-partition.com/help/merge-partition.html
hope can help you

Boot choice disappear after resizing main partition Mac

I wanted to resize the partition mac for more space later on Windows partition. But when the operation ended and I rebooted, I had no choice boot between windows and mac.
Now it boot, without asking my opinion, directly on the Mac partition.
How to fix this problem, so I can restart my Windows partition.
Thank you in advance for any help or advice.

Hi and welcome to Discussions,
use Diks Utility in OSx to check if you maybe inadvertently made a partition between your OSx partition and the Windows partition while shrinking your OSX partition.
If so, then the 'partition numbering' has been changed and the Windows partition is not found.
For XP have a look at this thread http://discussions.apple.com/message.jspa?messageID=11783594#11783594 for a solution.
For Vista or Windows 7 EasyBCD http://neosmart.net/dl.php?id=1 would be my tool of choice.
Hope it helps
Stefan

I cannot resize my partition

So i'm trying to resize my partition, my Macs memory (500gb) is partitioned in half and it shows 250gb for one partition and 250gb for the other which is free
space... it wont let me drag to resize and I don't know what to do

Back up your data, create a new partition in the free space, restore the contents of Yoseimite to it, select it in the Startup Disk pane of System Preferences, delete the partition on the bottom, and resize the one on the top to the drive's capacity.
(121309)

Cannot resize HFS+ partition

I am trying to shrink my OS X partition on my HD, as I need more space on other partitions. When I try to get resize info from diskutil, I get the following error:
%diskutil resizevolume disk0s2 limits
Error obtaining resizing information (is this a Mac OS 9 compatible "wrapped" HFS volume?)
Here is my disk partition:
%diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUIDpartitionscheme *320.1 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS Turbo Broccoli 233.8 GB disk0s2
3: Microsoft Basic Data DMZ 7.5 GB disk0s3
4: Microsoft Basic Data Boot Camp 78.3 GB disk0s4
I don't know if line 2 should say Apple_HFS+ or not, but Disk Utility.app does say its format is "Mac OS Extended (Journaled)." And running Verify Disk on the partition reveals no errors.
Any idea what is happening here? Thanks for any input.

Thanks to you both, luckily there's only 600GB on that drive at the moment.
I was wondering, though, why won't it let me make it bigger?
I already had a 1TB partition in the space below it. The screenshot shows me having already deleted it - but still no option to resize the other (larger) 2TB one.
If there is a reason why I can't resize now, then I can take that advice and try and make sure it doesn't happen when I reformat it again.
I would understand if the partition were MBR, but it's not, it's a GUID Partition Table (bottom right), so I'm confused - what is it's problem? ;-)

Cannot resize my main partition, random left over space?

So as you can understand from the topic I can't resize my mac main partition. There is some grayed out area of the parition and when i try to resize it, it then jumps back to the original size with the grayed out area.

No, you are starting up using your Recovery partition, so that you can use Disk Utility from there without the limitations that happen when you are booted from the main HD. And in fact, the unrecoverable section is probably your Recovery Partition.

Cannot resize partition...

Before mods delete/close/move my post 'cause I'm sure there exist hundred of related problems to this let me explain.
I study Engineering in Computational Systems, for my Digital Design class I need some software that only exist for Windows (I've been searching the web looking for alternatives for Mac without success)... So I decided I'd install BootCamp and Windows 7, but I got the **** "cannot resize partition" error...
So here's the deal... I CAN'T make a backup, my external hard drive is damaged, I've been searching and I found that this problem is 'cause BootCamp can't move big files or stuff like that so to fix the problem I have to defrag the hard disk and here comes another problem, I can't afford iDefrag neither...
Any help for defrag or resize my Mac OS X partition?

Usually when I see "Cannot resize..." it is because the Windows partition was too small, or they need more room for OS X files. Not because they got the error message from Boot Camp Assistant (which tells you to reformat and restore after you have a backup).
Step #1 is (always) backup before making changes.
Real easy... buy an external, you will need backups for Mac OS and probably Windows. you will want to be able to run OS X off external too at some point.
It isn't because there are big files, it is that they can't be moved.
The free space has to be contiguous, not fragmented, also, in order to create a slice for Windows.
I assume it won't work with a VM running under/inside OS X so you need to run Windows natively.
Some people have bought iDefrag ($49?) and results are anywhere from good to mixed to didn't work.
You are right, the question has been asked... about 999 times in the last two years.

Cannot resize partitions on yosemite !!

cannot resize partitions on yosemite !!

Do they have data on them? Are these partitions you could resize before? Is this a new machine? Is it formatted GPT or something else? Are you using boot camp?
It would be helpful, also, if you would phrase your question in the form of a question

Hello, I am trying to upgrade to yosemite, but I get the "disk cannot be used to startup your computer" error. Resizing the partition does not work, I get the error "MediaKit reports no such partition" probably because I installed linux in dual boot

Hello, I am trying to upgrade my macbook pro to yosemite, but I get the "disk cannot be used to startup your computer" error.
Resizing the partition does not work for me and I get the error "MediaKit reports no such partition" probably because I installed linux in dual boot and the disk manager is lost.
Anyway to tell the yosemite installer that it should not pay attention whether the disk is bootable or not ?
If I am doomed, any way to delete the installer and downloaded OS from my hard drive ?
Thanks for your help

As usual, the Linux installer wrecked the partition table. You would have to boot from your OS X installation disc and repartition. Doing so will of course remove all data from the drive, so you must back up first if you haven't already done so.

Unable to resize a partition.

Hello everyone
I `ve recently created a new partition on my MacBook Pro running OS X 10.9.4, and that was for install the public Beta of Yosemite, then i decided to delete that partition with Utility disks, then that space now appear gray, but the problem is when i tried to resized the partition dragging the lower right conner above, and then i clic "apply", nothing pass, So i was unable to resized the partition.
Could someone please help me .
here is a picture of UD.

As I suggested on your first post of this topic:
Install Mavericks, Lion/Mountain Lion Using Internet Recovery
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Internet Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
Partition and Format the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
After you have installed OS X you can use Boot Camp Assistant to create a new Boot Camp partition for Windows. Do not attempt to use Disk Utility or Boot Camp Assistant to create a third partition. You can have at most two partitions: OS X and Windows. You created a third partition which you then removed, and that is why this problem arose.

How to back up Boot Camp and how to resize FAT partitions

I suppose someone has already addressed this topic herein, but in case someone needs help I am leaving with you what I learned.
I started with a partition sized to 18 gigs and installed Windows XP on it. Soon the drive became full after I installed software and various disc images so I can play games. I wanted to resize the partition to 28 gigs without losing my data, leaving 46 gigs on my Mac partition.
I was not sure what would work so I chose several methods of possible restoration. The easiest was to boot to the Mac and use Disk Utility to make a Disk Image of Boot Camp. The next precaution I took was to back up my settings with the Windows Files and Settings Wizard. Lastly, I booted to Mac and turned on viewing of hidden files. Then I copied all the files off the Windows XP partition onto an external drive. I also tried Acronis True Image while in Windows but it was not compatible.
I also discovered a free program called Winclone (http://www.tuaw.com) that makes an image of the Windows partition and restores it for you, much like Disk Utility works.
In OSX, I ran Boot Camp Assistant again to rejoin the partitions. Then I ran it again to partition the new drive to 28 gigs.
The first thing I tried to do was to use Winclone to restore the Winclone image. That failed with errors. Then I tried to use Disk Utility to restore the drive and Disk Utility would not allow me to restore the disk image onto the drive. I am not sure why Apple is so unsupportive of implementing their Disk Imaging technology within the context of their own self-created Boot Camp technology.
Anyway, the last thing I could try was to copy the files back onto the new partition or to give up and reinstall Windows and use Files and Settings Transfer Wizard to restore my Windows settings.
After partitioning the drive with Boot Camp Assistant, I copied the files over and rebooted. Windows said there was an unsupported drive. Then I realized that I missed a step in the installation instructions provided by Apple for Boot Camp. I forgot to format the drive again using the Windows XP install CD, that the Apple says is necessary.
So I booted up the Windows cd and erased the Boot Camp partition and made it a FAT drive so that I would be able to copy my files over to it from OSX, which I would not have been able to do had the drive been formatted as NTFS.
As XP started to install its software, and it started to copy files from the cd, I pressed the power button to shut down the Mac. (Do this at your own risk. I am warning you that this could damage your computer, so do NOT try this if you feel uneasy about it.)
I booted into OSX. Then I trashed the few files that Windows had started to install on the Boot Camp drive. Then I copied all my backup files back onto the partition.
Here is a widget that will allow you to view hidden files in OSX: http://www.apple.com/downloads/dashboard/developer/hiddenfiles.html
I rebooted the Mac and held down the Option key while restarting. When the Mac and Windows drives appeared at the startup screen, I selected Windows, which booted up successfully. It then recognized the partitioned drive as new hardware and required me to restart, which I did.
I wanted to convert my drive from a FAT drive to a NTFS-formatted drive.
This is how I did that:
http://technet.microsoft.com/en-us/library/bb456984(TechNet.10).aspx
After converting Boot Camp to NTFS file system I noticed an immediate speed increase in Windows XP. I
In conclusion, Disk Utility is a good method of backing up your partition, as it allows you to use a password to make a disk image of your drive. It also allows you to copy the files off the disk image onto the Windows partition. But it would be a lot simpler if Apple allowed them to use Disk Utility to restore the whole image back onto Boot Camp.
Other methodologies I did not get to explore because I am happy with my results:
http://forums.macosxhints.com/archive/index.php/t-71165.html
http://forums.macrumors.com/showthread.php?t=241035

After copying your files back to the Boot Camp partition you may get this error message when you boot up Windows XP. Notepad opens with this message "[.ShellClassInfo] LocalizedResourceName=@%SystemRoot%\System32\Shell32.dll,-21787". If this happens to you please see this article from Microsoft. I had to perform both Methods 1 and 2 to remove the messages. http://support.microsoft.com/kb/330132

Cannot resize the albums in album view in Itunes 11. For those of us with large libraries (160gb), this is extremely frustrating. I want to make the artwork smaller. This seems to be a serious oversight.

Cannot resize the albums in album view in Itunes 11. For those of us with large libraries (160gb), this is extremely frustrating. I want to make the artwork smaller. This seems to be a serious oversight.

I agree.
It was very useful to reduce everything to small and quickly scan down looking for missing artwork.
Particularly useful when I only connect to the machine with iTunes via screen sharing, so everything can be a bit slower to scroll through at times.
In fact, itunes 11 when used purely as a server for Apple TV etc is a downgrade in usability IMO, as they've got rid of some of the useful views that helped me manage my library remotely.

Cannot resize main partition

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