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

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10
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7answers
15k views

What format for my external drive allows use with Mac and Windows?

How can I use my external hard drive on Mac OS so I can modify/edit files on both OS's: Mac and Windows? How should I format it?
1
vote
1answer
387 views

Installing OS X 10.7 on new HDD from DVD

I have a macbook A1181 model core2 duo3.1.3gb RAM. I lost my old HDD so I bought a new harddrive. Since I lost my old HDD I do not have the option to clone the old drive to the new drive. Mac OS X ...
0
votes
1answer
20 views

Move data from 1 hard drive to the other

I have a bootable partition on an external drive with some old data that I want to move to a new external hard drive. The partition on the old drive is 500GB however theres only 320GB of data. So i ...
1
vote
0answers
60 views

Error while erasing my system disk in recovery mode

My macBook Air failed to start. I have the grey screen and when the progress bar is at 100% it shutdown. I tried 4-5 times with same result. I try in recovery mode pressing Alt key during boot. I ...
1
vote
0answers
49 views

How to change ISO volume label on OS X?

I have some ISO files here with weird volume labels. I want to rename them to something I can easily remember. I know in Windows using either winiso or poweriso (both are non-free?) it can be done ...
0
votes
0answers
49 views

How to fix permissions with Repair Disk Permissions?

I just installed Xcode 5.1 and the latest round of updates. I followed that with a Repair Disk Permissions. For some reason, Apple installs its software with broken permissions. I then ran Repair ...
3
votes
2answers
2k views

Error-“Unable to write to the last block of the device.”

I am trying to setup a new hard drive into my Macbook Pro. However, I keep getting an error in disk utility that states, "Unable to write to the last block of the device." I saw another person was ...
1
vote
2answers
187 views

Unable to determine the Mac OS X version on the targeted disk (-69831)

I recently moved my home folder to another internal HDD on my MacbookPro (early 2011 OSX 10.9.4). I'm having an issue where in-app file dialogs cannot display my new home directory or its contents. I ...
9
votes
1answer
8k views

Can't ever remove partition?

Running Mountain Lion. I added a partition with Disk Utility and then had second thoughts about it. I'd like to remove the partition i created, MacSSD2 and hand over its space back to MacSSD. As you ...
0
votes
1answer
35 views

Disk Utility - 3 Pass Erase

Just for my curiosity and knowledge, I read on a book that Disk Utility can erase a Volume/Partition by using different option of security. Among these options there is one called: 3 Pass Erase, ...
2
votes
1answer
287 views

MacOS Extended (Journaled, Encrypted) uses h/w encryption?

I have a LaCie 2big, connected via Thunderbolt 2. When I select as a disk-partition MacOS Extended (Journaled, Encrypted), does that uses some type of hardware encryption or is it all software?
0
votes
1answer
34 views

Disk partition interrupted

So I was partitioning my macbook's hard disk so as to install addition operating system. But as disk utility was in the process of partitioning, I closed the disk partition (for a reason) thinking ...
0
votes
4answers
567 views

Reformat / resize an external hard drive removed from a NAS

I have a 3TB hard drive that I removed from a NAS that is only showing as 800MB on my Mac. Have tried Disk Utility (and terminal diskutil) but the hard drive keeps showing at the wrong size. ...
0
votes
0answers
110 views

Restore Bootcamp after deleting Ubuntu partition in triple boot

I currently have a Macbook Pro Retina on which I have triple booted Mac OS X Mountain Lion, Ubuntu 12.04, and Windows 7. I am using the rEFInd Boot Manager. I was no longer using the Ubuntu ...
0
votes
2answers
339 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 ...
0
votes
2answers
38 views

Why does my 2.5 TB HDD appear as a 2.2 TB HDD and a 300 GB HDD? How do I merge them?

I have a Western Digital 2.5 TB hard drive. (Model WD25EZRS) It's connected through an external USB dock to my iMac, running Mac OS X Mavericks. In Disk Utility there are two volumes, totaling 2.5 TB ...
2
votes
1answer
102 views

How do I copy files off a failed system partition without encountering permissions problems?

So I'm about to copy files off a system partition, and I'm afraid I'll have problems with permissions. A bit of background - OS X won't boot (looping progress bar) and Mavericks Recovery's Disk ...
1
vote
1answer
145 views

Creating a EFI partition

I have been having trouble installing OS X Mavericks and I think I found the problem. It told me I couldn't boot up with Macintosh HD, so I verified my disk and I got this error: This disk doesn't ...
1
vote
2answers
139 views

How can I mirror two macbooks [duplicate]

I have two macbooks. I want them to be exact copies. They have different CPUs, RAM, but they have the exact same drives. I work on both of them. I never work on them simultaneously. Can I setup ...
-1
votes
2answers
2k views

MacBook Air with Mavericks does not start up, no disk utility available

I have a severe problem with a MacBook Air. It does not start up, it hangs at wether a pure white background or white with the Apple logo. I tried to go into disk utility but pressing the option key ...
1
vote
1answer
47 views

Incorrect amount of free space on 2009 Macbook

Recently, I've been noticing that my 2009 Macbook's storage has been plummeting. Despite cleaning my computer up, nothing seems to be working. I went to the apple store and we ran tests (which I ...
1
vote
0answers
87 views

Disk Utility Crashed whilst creating a Partition and I'm now missing hard drive space

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 ...
0
votes
1answer
47 views

How to fix broken partition process - lost space

I've started to partition my SSD in my MacBook Air (2011). Somehow it get stucked in this process for quite a while. I decided to stop it and restart my Mac. But now: My allocated space on my hard ...
1
vote
1answer
293 views

cannot boot. volume disappeared from boot option after Disk Utility (GUI) repair

I have a 13-inch MBP with the latest OS X version. Problem Yesterday, I went to the Recovery Mode and performed Repair on my boot volume. I was not having a problem, but I just wanted to verify and ...
0
votes
0answers
64 views

Disk I/O error on a superdrive?

The hard disk of my late 2011 MacBook Pro 15" died and I replaced it with an SSD. I wanted to have more space, so I bought a 1 TB hard disk and put connected it instead the superdrive. The problem is ...
4
votes
3answers
8k views

“Warning: SUID file has been modified and will not be repaired” after repairing disk permissions

Warning: SUID file “System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAgent” has been modified and will not be repaired. I keep getting this after running Disk Utility ...
0
votes
2answers
108 views

how to create a 128MB HFS+ partition using diskutil

I have a ~ 500GB disk in my new Mac, and I would like to create a 128MB HFS+ (Journaled) partition using OS X, but when I tried to do this earlier today the smallest HFS+ partition I could create was ...
0
votes
1answer
80 views

Macbook pro, disk utility and external hard drive

I have a Macbook Pro running on Lion. My external hard drive is a Buffalo and used as data backup only, and is formatted to Macs. I have used the ext. hard drive for two years with no issues. I am ...
1
vote
0answers
103 views

Can't format USB Key

I've got an issue with my USB key, I can't write on it, nor format it... Here's what the erase option of Disk Utility outputs: Here's the Verify/Repair output: Verifying volume “NO NAME”Checking ...
1
vote
2answers
113 views

How to keep data from an old Mac to restore later

I have a new Mac, and I want to selectively move files over from an old Mac. I've sold the old Mac and need to ship it today, so what I really want to do is simply take a complete copy of the HD in ...
1
vote
2answers
1k views

Remove “Windows” Entry from Mac Boot Loader

Background A while back, I installed Windows 8 on my MacBook Air (mid 2013 model) using Bootcamp. It never really worked, (it would freeze all the time, the WiFi would cut in and out, etc.) so I got ...
1
vote
0answers
27 views

Finder stuck at starting

I have a big problem with my mac book pro 15" - maverick. Yesterday I was using my mac normally and I shutdown it normally. Today, I turn on and everything is fine until when I have to insert my ...
6
votes
5answers
1k views

How to identify and fix files with corrupted / inaccessible disk blocks

I have a late 2011 Macbook Pro, running Mavericks 10.9.2. Its sole HDD is a 750GB drive, formatted with Bootcamp. It's still running reasonably well, but in running a defragment pass on it, I've ...
2
votes
1answer
284 views

Install knoppix on usb with disk utility?

I have downloaded the linux distro knoppix. I have snow leopard and i want to make a bootable usb with the above distro with the disk utility. I put the source to be the iso of the distro and ...
0
votes
1answer
34 views

Raid 0 - Why am I constantly losing data?

I have a Mediasonic 4 bay drive enclosure like this with four 3TB Toshiba HDD's attached to my hackintosh machine. The drives are in a RAID 0 configuration setup with Disk Utility. I've had this ...
0
votes
1answer
30 views

Apple to Windows External Hard disk file system error

I have a Toshiba 1tb hdd. I bought an apple laptop few weeks ago and the hdd has been working properly. Today I wanted to move some files from my old windows pc to the mac. When I connected the hdd ...
1
vote
0answers
1k views

Error occurred while removing boot camp partition with Boot Camp Assistant

While attempting to remove a boot camp partition with Boot Camp Assistant I encountered an error. Boot camp assistant gave me an error message along the lines of "An error occurred while restoring the ...
1
vote
2answers
1k views

How can I repair a hard drive that Disk Utility and Disk Warrior can't fix?

I have a Mac Pro running Mac OS X Lion, and one of my hard drives has acted weird since attempting to repair permissions. I used Disk Warrior, but it says the HD can't be rebuilt. When I try to format ...
0
votes
2answers
35 views

Recovery HD tries to delete itself

My configuration of Mavericks-Ubuntu-Windows has gone nuts, so I deleted the windows partition and rebooted to Recovery HD to try and reformat the whole HD. Recovery HD at first appeared in disk ...
0
votes
1answer
316 views

Partition failed

Trying to shrink my default full disk partition to create some free space (for Ubuntu, incidentally, which I'm longing for even more now). Partition failed Partition failed with the error: Couldn't ...
0
votes
1answer
59 views

Time Machine backup to a networked (no Airport or Time Capsule) drive

I followed this tutorial to backup with Time Machine to a hard drive shared on the network (no Time Capsule, Airport). However, when I go to Time Machine and click select backup disk, it simply opens ...
1
vote
1answer
72 views

Create new partition from brand new MacBook Air

I just purchased a macbook air, and when opening Disk Utility, I see the following: 251 GB Apple - Macintosh HD I want to have a 10GB partition besides the current one, which will have the format: ...
2
votes
1answer
96 views

Hard Drive Formatting Error in Terminal

I have tried formatting and partitioning this brand new hard drive and it has failed on multiple computers using multiple methods. It is a LaCie Porsche Design 4TB hard drive. Here is the commands I ...
2
votes
1answer
3k views

MacPro Hard Drive 3 TB or Larger formatted to Logical Volume Group by Disk Utility

I have an Intel MacPro in which I recently installed a new internal 3TB hard disk. I attempted to format it in Disk Utility using the standard GUID partition map and encountered a strange problem. ...
1
vote
1answer
59 views

Where is the temp file created by Disk Utility during erasure of free space kept on a non-boot volume?

I used Disk Utility to perform a secure erase of free space on an external non-boot drive, and ran into a problem and the process was aborted. I see that the file is still there because the drive ...
1
vote
0answers
30 views

What to do if repairing one disk made the other unrecognized?

Originally I had two drives, an HDD and an SSD (my boot drive). The HDD had a 100gb partition on it that used to have windows installed on it, but that partition got locked and became unusable. When I ...
1
vote
0answers
21 views

Can you change the volume name when creating a disk image from an optical disc in disk utility?

I know how to create a disk image from an optical disc using Disk Utility. The problem is that I need to change the volume name for the resulting disk image.
1
vote
0answers
455 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 ...
0
votes
1answer
301 views

Disk Utility reports “missing thread record” on my external HDD

I have an external 500 GB HDD that's about five years old. I just turned it on and it made a bunch of clicking noises and failed to spin up immediately, though it did so after a few seconds. To be ...
0
votes
1answer
322 views

Is SDHC Card compatible with a MBP mid-2009?

I have a Mac Book Pro, mid-2009 model that has a SD card slot. I just bought a SD Card from SanDisk, 8gb, SDHC. When I insert the SD card in the slot, it is recognized by the MBP: I have a new icon ...