Apple's built-in disk management utility for the mac. Erases, formats, and restores volumes and drives.

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494 views

Getting loads of Open error 5's when using Terminal to repair permissions

My GF's MBP running on Mavericks broke down 2 days ago. First I tried to copy the contents of her HDD to an external HDD but got the I/O error time after time. Then I tried all the basic things like ...
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1answer
487 views

Failed to make bootable USB drive and now I can't even format it

I want to do a fresh install of Yosemite and I got a brand new 8GB flash drive and I followed this tutorial. I formatted the USB drive and was copying the Yosemite installer, however I got the ...
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2answers
5k views

How do I get detailed SMART disk information on OS X (Mavericks or later)

I'm trying to get a detailed SMART status report on the drives in my Mac. I'm not talking about "Verified," I'm talking about the detailed report that's about 100 lines long listing all the vital ...
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2answers
1k views

JDiskReport is damaged, can't be opened

I have tried downloading and running JDiskReport 1.4 a few times now, and after unzipping it and clicking on the executable I get the message: "JDiskReport" is damaged and can't be opened. You ...
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1answer
58 views

Data partly lost or hidden on external disk

I have an external disk connected to MacBook via USB. From time to time the system alerts that the disk is unreadable, but sometimes it seems to connect and I can browse it in Finder, and even open ...
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0answers
60 views

Newbrand Mac with Yomsemite, 1TB HDD, limited to two partition

I just bought a new Mac , i started to make few partitions as i used to do in the past. I noticed i am not able to have more than two partition :( It says : "you may only split this partition into ...
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1answer
341 views

How to Fix Disk Utility Getting Stuck on “Verifying storage system”

Okay, had a brief power outage today that shut down my computer and external drives, so I figured I should run a quick disk check just to be safe. However, when I run try to verify with Disk Utility, ...
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1answer
3k views

My macbook air wont let me erase my disk?

What the title says. I'm trying to delete all the data off my macbook air. I pressed command+r, went to disk utilities, selected my disk in the slot to the left, went to the erase tab. The "erase" ...
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0answers
202 views

seagate harddrive won't show in finder, appears in disk utility, can't mount

My hard drive seems shows up in disk utility but not in finder. All my finder preferences are set correctly. The partition does not seem to want to mount. Here are the errors found in the console ...
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1answer
550 views

Bootcamp system operating missing error after resizing partition

I resized my partition to increase my bootcamp drive few months ago on Disk Utility on Mac and after that I decieded to have more space on Bootcamp partition so I resized it again by set new size for ...
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0answers
296 views

Can't mount Macintosh HD volume - invalid content in journal

my 2TB external HHD has decided to fail to mount with the error "invalid content in journal" so i removed the journal using the terminal and tried to mount it - still fails ran verify disk on the ...
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1answer
47 views

DIsk Image shows larger size unmounted then when mounted. How to fix

I have an encrypted dmg (Mac OS Extended Journaled) read/write and it shows a size of of 768.46 GB unmounted but only has a mounted capacity of 665.72 GB. I think something may have been corrupted ...
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2answers
844 views

Disk Utility on Mavericks fails because “disk is too small”

I'm on mavericks and I am trying to delete a partition of an external hard drive. This is its schema Partition1: 50GB "MavericksBackup": Bootable backup Partition2: 187GB "Home Data": Absolutely ...
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2answers
50 views

How do I clone my drive to a external USB drive?

I have CarbonCopyCloner but it cannot see my new SSD in the destination section. The destination drive is a USB-attached SSD. How do I clone to this drive in CarbonCopyCloner?
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1answer
869 views

MAC OS X refuses to mount the main volume Macintosh HD, saying that there's an “Invalid content in journal”

I have a problem with my MAC. Yesterday it got stuck while it was trying to connect to a Wi-Fi network, then, since it didn't respond I decided to turn it off using the power on/off button ('). When I ...
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1answer
264 views

Cannot format SSD in optical bay

I tried to install a new SSD with higher capacity in the optical bay. But OS X cannot format the SSD. I also tried to swap with an HDD but same problem with HDD. Failure format or something like this. ...
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1answer
101 views

Trouble with my partitions

I have some trouble with my partitions on my Macbook Pro. I created 2 partitions. One named "Yo" where I have installed Yosemite release. Another one named "Save" where I put all the stuffs I need to ...
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1answer
55 views

How can I reclaim the partition's space from this shrunk volume?

I've already reverted the CoreStorage volume. And I've resized my "Macintosh HD" volume (by dragging it) and want to increase the size of my "Yosemite" volume. How do I reclaim the space (in grey) ...
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1answer
120 views

Do I have a Recovery HD?

I replaced my MBPs HDD with an SSD and put the HDD in the optical bay. Since then, I was missing the Recovery HD partition. That was still on Lion Now I have upgraded to Yosemite, and running ...
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1answer
77 views

Diff between diskutility and finder on free space

I came across this today : At first I was like : "Caching bastard." but no... The finder is right and the diskutil is wrong... Why ?
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0answers
1k views

Macintosh HD not showing in disk utility!

First a flashing file came up on my mac. When i go into disk utility's and it just shows disk0 and Mac OS X Base system. I've followed everything that I've found on the net: I've tried to start ...
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3answers
246 views

Does erasing Macintosh HD then restoring from Time Machine result in the HDD being reformatted?

I recently had a problem with the Macintosh HD that could not be repaired using the disk utility so I erased the disk (using disk utility) then restored from time machine (most recent backup) Does ...
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1answer
747 views

Image files made with Disk Utility creates parent folder

I'm using OS X 10.5.8., updated from 10.5.2. which I installed from the two installation DVDs that came with my MB404 MacBook. I recently found my original 10.5.2. installation DVDs, which I thought ...
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2answers
54 views

Cannot mount encrypted Time Machine

I've an encrypted Time Machine with the password saved on the keychain. Now, trying to plug in, it ask me the password and it's always wrong. I've checked hundreds of times and it also allowed me to ...
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3answers
10k views

Can't create partition on free space with Disk Utility [duplicate]

I have created new partition by selecting free space option and now I can't merge it or recreate it. I have tried to use iPartition to create a new partition on free space but it said I have no ...
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1answer
757 views

Incorrect free disk space on SSD after cloning Yosemite partition because of corrupt “.Trashes” folder

I replaced the Superdrive of my iMac with an SSD. Next, I trimmed down the partition of my existing HDD (2TB) as much as possible using Disk utility. This resulted in a 140GB partition. Then I used ...
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4answers
6k views

Unable to mount Time Machine partition

I have a WD external HDD which is plugged into my MacBook Air more or less all the time; it has two partitions one of which is my Time Machine disk. Just today I noticed that the hard drive is not ...
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3answers
2k views

How do I load the DiskManagement framework in single user mode?

From single-user mode in OS X 10.5, I want to run diskutil repairPermissions / but I get an error: Unable to run because unable to use the DiskManagement framework ... Is there a way to load the ...
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1answer
149 views

Why is my Partition a folder?

I've set up a iMac12,1 with Yosemite (fresh) on a second partition. Then I've formatted my first partition (after i migrated my data from my old installation to my Yosemite installation on the 2nd ...
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1answer
386 views

Can you help me reformat my disk in recovery mode? Seriously botched Yosemite/FileVault installation

I have a mid-2011 macbook air. When I start up my computer, it automatically goes to recovery mode. I have a backup of my data, so I don't care what I have to do to get OS X working again. Disk ...
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5answers
10k views

Forgot my password to a disk image (.sparseimage)

I'm in trouble right now. I used Disk Utility to create a sparse image and I cannot remember the password, when I created the file I didn't select to remember in keychain. Now, I try to enter the ...
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0answers
37 views

Correct Filesystem Setup?

Recently I did a fresh install of OSX Yosemite on my Macbook Pro. I followed these instructions to create a USB install drive, and I then used the Disk Utility app from that booted USB drive to erase ...
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1answer
617 views

Unable to convert dmg to encrypted dmg on Yosemite

When I try to convert a regular (internet downloaded) dmg file to an encrypted dmg (256-bit AES) using Disk Utility on Yosemite it gives me this error message: How do I get this to work on Yosemite? ...
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1answer
61 views

What is the proper way to save Application Information Before Reformatting My macbook?

My mid-2009 17" Macbook running Mavericks is running really slow and constantly freezes. I went to Disk Utility and ran "Repair Disk," but after about 3 minutes it said: "Disk utility can't repair ...
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1answer
149 views

My SSD Drive has been converted to a Core Storage drive and cannot be erased/reformatted?

I put an SSD drive into my macbook pro. I should say that this drive hadn't been formatted and was a bootable drive with Yosemite OS on it, taken from another macbook pro... I booted the system up in ...
6
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1answer
14k views

Unable to format / erase hard drive

I have an external HD that died on me a while ago and I'm trying to see if I can format / erase it to start using it again. The disk does not show up in Finder but I can see it in Disk Utility. When ...
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0answers
102 views

Unable to utilize “Free Space” partition

On my SSD disk I have one partition for Mac OS X Yosemite and one partition for Windows 8.1. I needed more space on my Mac OS partition and therefore a decreased the size of the Windows partition from ...
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0answers
190 views

Deleted partition with Disk Utility, can't add new one

I had three partitions on my 750 GB HDD on my 2012 MacBook Pro top end: - 'Macintosh HD' at 646.4 GB - 'Recovery HD' at 650 MB - 'disk05' at 100 GB Earlier I had Ubuntu 12.04 installed on disk05, ...
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1answer
72 views

Insert third partition in previous 2-partition setup

I've read a few of the articles around, browsed the net for a while, but was unable to find a solution to my problem. I have an MBP with 1TB Flash which is split by 50% into two partitions. One ...
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0answers
245 views

Disk Utility won't let me remove partition. No matter what

Since Yosemite was released this month, I decided to inaugurate it by downgrading from Mavericks to Snow Leopard. I decided to back some files up in a partition (on Mavericks) before wiping the main ...
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3answers
3k views

Disk utility can't add partitions

I have two partitions - one with Mac OS, and another with Windows 7 (created by Bootcamp). Now, I want to create two more partitions for Linux - LINUX and LINUXSWAP. I open Disk Utility and specify ...
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0answers
335 views

Hard disk drive problem with Macbook Pro, can't see and repair it

I have a problem with my MacBook Pro 13'' mid 2012. I have an external HDD and when I insert it, it doesn't appear on the desktop. If I go into Disk Utility I can see it, but it is written in light ...
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4answers
8k views

How do I repair permissions of a specific directory?

I want to repair permissions of a user defined directory along with it's subdirectories. How can I do this? So far, I've looked for options in finder and tried to drag the folder into Disk Utility. ...
2
votes
1answer
309 views

How do I format an encrypted Integral Secure Key?

I just bought an Integral Secure Key from the Apple store but am fed up with having to use its own software just to transfer files to it as it does not appear as a normal USB drive in Finder. How can ...
0
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1answer
150 views

Can't modify partitions

I was beta-testing an Operating System and set up a separate 50 GB partition on my single 500 GB SSD. Now I cannot remove the beta partition. It shows up as another disk entirely. What can I do? As ...
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3answers
440 views

Unable to increase partition size with subsequent blocking partition

I can't make my main Macintosh HD partition bigger. It's limited by the partition in the middle, which seems to be frozen, I can't move it down to make space for my main partition. Also I can't seem ...
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0answers
19 views

Unable to increase size of “Macintosh HD” partition because recovery partition is at the end of it [duplicate]

I've been using Boot Camp with Windows 7 from almost the day I bought my MacBook Air in 2012. Recently, I noticed that I had a lot more free space in Windows than I needed so I shrunk it using ...
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1answer
47 views

Combining two RAIDs

I have an OSX machine which houses 2 RAIDs made of 6 disks. The 2 RAIDs contain 6TB of data; they were set up with Disk Utility: A 'safe' 4TB RAID-1 (mirror) made of 2 x 4TB disks, 3.68TB used A ...
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0answers
17 views

Couldn’t modify partition map because file system verification failed [duplicate]

I accidentally deleted a bootcamp partition within Utility Disk. I tried to reclaim the free space by dragging over the free space but it does not work. Beyond this I verified and checked the disk ...
3
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3answers
2k views

Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...