OS X V10.7 Lion :: Disk Utility Can't Repair Disk (1 Partition) On External Hard Drive

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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MacBook Pro :: External Hard Drive - Disk Utility Can't Repair Disk

Jun 27, 2014

I have a Seagate 1 TB Backup Plus Drive which was working perfectly fine until I plugged it into a USB hub. It detected it while in the hub and I was able to get files off of it, but when I ejected it from the hub and put it back into the USB slot on the computer it was not detected by finder. It shows up in the disk utility and I clicked verify and repair and it says:

Verify and Repair volume “Seagate Backup Plus Drive”
Checking file system
Volume repair complete.
Updating boot support partitions for the volume as required.

Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files. 

Is there any way to get this to work properly again? Or if not is there a way for me to recover my files on the external hard drive? 

I have a Macbook PRO late 2011 running OS X Mavericks.

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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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Feb 22, 2010

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Mac Pro :: External Hard Drive Seen In Disk Utility But Partition Won't Mount?

Sep 2, 2014

I've been running a Toshiba 1TB external drive on my Mac Pro tower and it's been working fine.  But yesterday it wouldn't mount.  I could see the drive in Disc Utility, but the partition wouldn't mount.  I brought it into work where I'm running an iMac and it mounted just fine.  Why would it stop working on one computer (where it was previously fine) yet work okay on another? And how do I get it working on the tower?

Info:
Mac Pro, iOS 7.1.2

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Applications :: Can't Modify External Hard Drive Partition With Disk Utility

Jan 7, 2011

I have an external 750GB hard drive that I previously formatted as FAT 32 because I wanted to be able to plug it into Windows computers as well. I was not very thoughtful at the beginning and I just created one big 750GB partition. I currently have 450GB used and about 300GB free.

I would like to create a new partition in the free space without losing the data I have in the disk, and format the new partition as Mac OS Extended to use it for Time Machine backups. Presumably Disk Utility can do it, but when I go to the "Partition" tab it says "This partition cannot be modified" and the "+" sign below it is grayed.

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Applications :: Disk Utility Won't Format Or Partition External Hard Drive

Apr 18, 2010

The hard drive is a 1TB Western Digital my book I bought it in January I think. I tried to format it to Mac OS Extended (Journaled) when I got it but for some reason every time I try to erase the part thats named disk3s2 or partition the main one it stops a little before half way through. I don't think its the hard drives fault so I called apple about it one day and they helped a little but it didn't work. Thanks in advance if you can help me. Also a few times I waited about seven hours for it while I was at school and when I came home it didn't move.

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Applications :: Disk Utility - FAT32 Partition With Existing MAC External Hard Drive

Jan 29, 2010

I have a 1/3 full external drive that is currently formatted for MAC OS External.

I want to partition the drive in half and use the 2nd partition for Windows FAT32.

However, when I try to do this with Disk Utility it does not give me the FAT32 option.

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OS X :: Disk Utility Partition Erased Hard Drive?

Nov 12, 2009

I was making a partition on my USB external drive in order to put a disk image of Snow Leopard on it, so I could boot off of it.

I added a 10GB partition to the drive, and clicked Apply. The following dialogue box came up:

Partitioning this disk will change some of the volumes. No volumes will be erased.

This volume will be added:
"Snow Leopard"

This volume will be resized:
"XXX HDD"

I clicked Partition, and it finished very quickly. I checked Finder, and the entire drive, BOTH partitions are completely empty.

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OS X Mavericks :: Change Partition Of External Drive Using Disk Utility?

Aug 25, 2014

I wish to change partition scheme, sizes, in an external drive. All the partitions are MacOS extended (Journaled) and they map, according to the layout in Disk Utility, as follows: Partion 1, 2, 3,4 where 1 is at the top and 4, the bottom. I want to make partition 2 larger, so I decreased partition 1 by half. Now the layout is 1 a, 1b, 2,3,4., where 1b is now free space. Disk Utility will not allow me to increase the size of  partition 2 by dragging the corner. Which of the following options (if any) will allow me to increase the size of partition 2, without erasing the data, using Disk Utility:Select partition 2 and manually writing a new value in the size box, equal to the present partition’s size plus the free space?If I delete partition 1 completely, will I then be able to increase the size of partition 2?If I delete partitions 1, 3, and 4, will I then be allowed to increase the size of partion 2?Is there another option?

(Actually, partition 3 is an eDrive, a data recovery utility created by TechTool Pro 7, so I don’t really know how it’s formatted.)

SeagateHD 1.5TB USB drive.

Info:
Time Capsule 802.11n (2nd Gen), OS X Mountain Lion (10.8.2), MacBook Pro, iBook Dual USB

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MacBook Pro :: Lion On Ssd Crashed - Disk Utility 'cannot Repair The Disk'

Apr 25, 2012

Fortunately I got a time machine backup. And its restoring the drive while in Lion recovery mode. Here's what happened... I dont have a router a my place at the moment and so my two phones (iphone 4 and htc android) connect to my internet using my MBP's wifi via internet sharig. For some reason they were not able to get an IP from the mbp. After doing some wifi swtich toggles and forgettig & rejoining the network, i decided to reboot all my devices. I shut down my modem, phones and restarted my mbp. On reboot, after the chime, it showed an unsusal 'progress bar' under the apple logo. The bar progressed to about 10% and then the mbp just powered off. This happened several times even after PRAM and SMC reset.  

So now i booted with cmd+r pressed and in recovery mode ran a 'verify disk'. It said the verification stopped and that i should repair the disk. When i tried to do that it said the disk cannot be repaird and that i should back up as many files as possible and attempt to format the disk and restore it with time machine. It is precisely what im doing at the moment.  

1. Mbp wont sleep even when internet sharing is off

2. Mbp wont lit the onboard display upon opening it in clamshell mode until i removed the 3.5mm audio cable of my speakers from the audio out port! 

Info:
MacBook Pro, Mac OS X (10.7.3), Mid 2010

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Sep 7, 2009

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Apr 28, 2010

I have a Lacie 1TB external drive. I'm trying to create another partition on it using Disk Utility so that I can use one of the partitions for Time Machine. When I go to add another partition, or even just resize the existing one, I get an error saying drive must be HPFS+ with Journaling enabled. It is. I've seen reference to this error in searches, but have not found a solution. Is there a fix for this, or another tool that I can use to re-partition my drive without wiping out existing partition? I have about 450GB worth of data on the drive that I might be able to store somewhere else temporarily, I would just prefer not to have to go through that....

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Jun 17, 2012

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Info:
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Jun 3, 2014

Disk Utility Crashed whilst creating a Partition, and I now have ~100GB missing, which was the amount I had allocated to the new partition.

The new partition didn't get created, and I now have 100GB missing from the Hard drive. I have a 1TB hard drive, and when I go to Disk Utility, it says:  Capacity : 999.35 GB (999,345,127,424 Bytes)Available : 586.1 GB (586,103,844,864 Bytes)Used : 310.52 GB (310,524,317,696 Bytes) 

Which adds up to about ~900GB.

I tried Repairing Disk in Disk Utility, booting into Recovery Mode and Repairing Disk there, but neither made a difference. 

Info:
MacBook Pro (15-inch Mid 2012), OS X Mavericks (10.9.3)

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Apr 11, 2010

I am considering purchasing diskwarrior but want to make sure it can help my situation before I purchase it. My imac will not boot from the internal hard drive (Intel processor) When I use disk utility to try and repair the disk, I get error messages and it won't repair. I can see the HD but cannot repair it. When I connect using target mode with my mac book pro, the hard drive does not appear on my host (macbook pro) computer. I have reloaded OS X (Leopard) onto a firewire external drive and can boot my imac that way but I can not find my original internal Macintosh HD. Will disk warrior be able to help with this scenario. I would really like to access that internal Macintosh HD and retrieve my files.

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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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Aug 10, 2010

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Aug 6, 2010

I have an external 500GB Freecom USB HDD with two Data partitions on it (FAT32 and NTFS). With a Windows tool, I made the two partitions smaller in order to free up some space (ca. 200GB) for an additional Mac OS Extended (Journaled) partition. This partition I wanted to create with the Mac OSX 10.6.4 Disk Utility. When I pluged in my USB HDD in my new iMac it mounted the two partitions, NTFS and EXT32 and the Disk Utility tool also showed the free (unpartitioned, almost 200GB) space on the HDD. Then, I chose to create a new Mac OS Extended (Journaled) partition and let the tool do it. ...which I probably shouldn't have done. Disk utility stopped and showed an error message saying that it cannot read the partitions anymore and that it needs to be closed. No partitions can be mounted anymore since then on this HDD. Here is the logfile entry of Disk Utility (unfortunately, it's in German):............

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I've recently converted to the Mac-side:

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Disk Utility won't allow me to mount the drive, I've tried using a number of softwares to read it (working under the assumption that it's an NTFS drive), including Tuxera and Paragon. I have too much stored on the hard drive to empty it back onto my old computer, and so I'm not able order to re-format it.

Info:
MacBook Air, OS X Mavericks (10.9.4)

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Jun 10, 2012

I had downloaded some files to add to an external hard drive, the hard drive was assigned to a pc before adding these files so it wouldn't let me add files from my MacBook.. 

Had a look around online and made some changes (well thats what I thought) and I was able to transfer files form my MacBook onto the external hard drive. 

What I then figured out was that there was nothing left on the hard drive except for the two file sI just transferred.. 

It turns out I deleted everyting without noticing.

The stpes I followed was to go to disk utility then select the hard drive and click erase (not knowing this would erase evrything). 

So now I have two files on my hard drive and no idea how to recover the 'delted' files. 

I tried using Disk Drill, which found the files but then it said I need to buy the full version to recover them. 

I am wondering if there is any free methods to recover these files at all

Info:
MacBook Pro (13-inch Early 2011)

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Jan 2, 2010

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Is it something I should heed and what to do in that case?

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Information:
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May 14, 2012

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Info:
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Info:
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Sep 12, 2014

Macbook Pro running on OSX Mavericks is having problems. 

Today I turned my Mac on, and it started up with a loading wheel and a loading bar. When the loading bar finished, the Mac turned itself off. I tried many times, same happened every time. I then went into OSX Recovery, started repairing Macintosh HD, but the error message saying "Disk Utility can't repair Macintosh HD" came up and now I don't now what to do. 

Is there any way I can back up my files in this situation? Is there any way I can repair the disk without having to erase all data and reinstalling OSX? Or do I really need to bring it to a Apple Store for repair? 

Info:
MacBook Pro, OS X Mavericks (10.9.4)

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