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

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3
votes
2answers
4k views

Format SD card with FAT and custom file allocation unit size

I'm using Maverick (a offline mapping application) on my Android device which has thousands of files in the tile cache with a size of 168 byte. The SD card is formatted with a file allocation unit ...
1
vote
1answer
3k views

Why is my boot partition listed as Unmounted in Disk Utility?

I recently experienced a kernel panic ("your mac must restart...") due to an issue with Macfusion, so after the reboot I loaded Disk Utility in an attempt to verify the disk in case something was left ...
5
votes
2answers
5k views

How can I mount an encrypted disk from the command line?

When I type diskutil mount disk3 in the terminal, it says Volume(s) mounted successfully. However, the disk is not mounted and I can confirm this by opening the GUI of Disk Utility.app and also the ...
1
vote
1answer
453 views

Recover files from one volume to another on the same Drobo?

One evening we had a momentary power outage, causing sudden shutdown for my Mac mini and the attached Drobo (4 bay). When the system came back up, only one of the two volumes mounted on the desktop. ...
4
votes
2answers
11k views

Deleting a partition in Disk Utility fails. (Error: -69879)

This is the output in Disk Utility: Disk Utility cannot modify this disk because it contains CoreStorage physical volumes. Use command line distil instead. The selected partition won't be ...
1
vote
1answer
2k views

What is the blue section of a partition in Disk Utility?

What is the blue section at the top of this image (above Macintosh hard drive partition)? Is it another partition, it only seems to exist on this partition when I create a new one. Where do I find the ...
0
votes
2answers
340 views

Checking number of reallocated sectors of HDD through Disk Utility, Mac OS X

My MacBook was purchased in 2008. Yesterday I checked the number of reallocated sectors of the hard drive using Disk Utility. It showed there were no reallocated sectors. That seems strange since I ...
7
votes
2answers
685 views

Move complete Lion installation to another physical drive

is there a way to completely move my OSX Lion to my new SSD without reinstalling? I came from Windows and Linux to OSX and i thought maybe it is possible to simply change the bootloader config after ...
3
votes
2answers
2k views

Disk utility in command line

I'm looking for the CLI equivalent of "Check disk" and "repair disk" in Disk Utility. I think fsck is involved but I don't know with which options, and if it's the only program run.
0
votes
1answer
915 views

Solving a problem on a MacBook Pro 5,1 with an OCZ Agility 3 SSD

I installed Mac OS X lion on an SSD (through USB) after checking the firmware was the latest version (2.15). When I transferred the SSD into the MacBook Pro (like i usually do after an install) but it ...
3
votes
1answer
259 views

How do I format a (non-formatted) drive when the menu options in the Disk Utility are greyed out?

So I tried installing Lion on an old (white) Macbook, but first I wiped by my drive clean. Just to find out that I only had 1GB memory and Lion requires 2GB. Now the drive is clean, with no ...
0
votes
1answer
863 views

invalid ISO file created by disk util?

In order to install Windows XP on Virtual Box at my new MacBook Air, I need to create an ISO file of my WinXP install CD. My Laptop (MacBook Pro / Lion) comes with the Mac Disk Util and that app can ...
1
vote
1answer
573 views

OSX Lion Disk Mounter

I seem to have broken something in my OSX Lion install. Whenever I insert a SD/CD-ROM into the machine I have to go into Disk Util to manually mount it. This happens quite a lot and is getting on my ...
3
votes
1answer
4k views

Why won't disk utility let me remove a partition from my external hard drive?

I have an external 1.5 TB hard drive split evenly with a partition for backup and a partition that was used for Time Machine on my previous computer (OS X Lion). Now I'm using this hard drive with a ...
1
vote
2answers
7k views

How can I partition my Macbook Pro's hard disk?

I'm about to install Linux on my new Macbook Pro. In order to do this, I need to resize my Mac OSX partition to allow some free space for Linux. I've booted into the Recovery HD and started "Disk ...
2
votes
1answer
1k views

External HD Shows up in Disk Utility, but I can't access it

I have an External 1TB hard drive that has been corrupted, it was so corrupt that I had to abandon the files on it. So now I'm simply trying to erase it so I can begin using it again. But here's the ...
8
votes
2answers
8k views

How do I resize OS X main partition when I already have other BootCamp partitions?

Short story: partition resizing using Disk Utility fails because MediaKit reports no such partition when I try to shrink it. I also tried the same while booting from the DVD, same result. Details: ...
0
votes
0answers
155 views

Ubuntu Disk isn't showing up at Boot

I recently installed ubuntu on a flash drive, following all of the instructions on the ubuntu website. When I started up my mac, it didn't appear in the boot menu. Has this happened to anyone else ...
2
votes
1answer
680 views

What do Verify Disk and Repair Disk actually do in Disk Utility?

I've recently been suspecting problems with my hard disk and saw another answer here on AskDifferent recommending Drive Genius or Disk Warrior. I thought I'd start thought by using the built in Disk ...
1
vote
1answer
373 views

On the Mac, what if Disk Utility is used to mirror two hard drives, one is 1.5TB, and the other is 2TB?

If I happen to have two external hard drives, one 1.5TB and then other 2TB, and use Disk Utility to mirror the two drives, will there be any problem? Can it be mirroring just for the 1.5TB portion, ...
3
votes
2answers
3k views

How can I reformat my hard-drive?

I am in Disk Utility under the Erase Tab. The Format section is grayed out even though I have my main disk selected. The only buttons active are Erase Free Space, but I want to reformat the entire ...
1
vote
4answers
2k views

chmod/chown hfs+ Volume

I have just saved some data from a crashed PC to my external HD, which is a HFS+ Volume using Ubuntu live (regular copy no dd). Now I am lost: I don't have any privileges in the Folder i copied on my ...
0
votes
2answers
243 views

Ejecting disk after failed mounting

I have a RCA VR5220 voice recorder, with a built-in USB connector. Because this thing was clearly built by Windows-minded engineers, the only way to access the files in Mac OS X is to plug it in and ...
2
votes
2answers
989 views

Disk utility, shrink 1 partition, expand the other

I have two partitions on my external HDD, I shrinked 1 partition (Macintosh Lion) in order to expand the other (Macintosh HD), but I can't drag the lower right corner to expand of the 'Macintosh HD' ...
0
votes
2answers
2k views

How do I partition my computer for Boot Camp?

I want to create a BootCamp partition on my 13" MBP with a 250 Gb hard drive. The DiskUtility shows the partition as Mac OS Extended (Journaled). . When trying to perform a partitioning with ...
1
vote
1answer
7k views

How can I resize my Lion partition to fill up the unused space on the drive?

My MacBook (Late 2007) has an 80GB hard drive. I used to have a 15GB Boot Camp partition, and deleted it at some point -- but I forgot to resize my Snow Leopard partition to fill the 15GB of free ...
1
vote
2answers
228 views

Software/utility to completely erase cookies/cache

What software (or using any other in-built tools) can I use to clear (by clear, I mean scrub from the disk) the cache & cookies in browsers, without affecting the bookmarks etc. I use firefox 4. ...
1
vote
1answer
137 views

Can you run Disk Utility from bootable lion disk?

I've made a bootable lion disk by extracting the InstallESD.dmg from the lion installer app's package contents. - (Contents>SharedSupport>InstallESD.dmg) When booting from this disk, can you run disk ...
1
vote
4answers
4k views

Snow Leopard Clean Install - Zero Out SSD?

I just upgraded from a 2010 13" MBP to a 2011 15" MBP. When I boot off the Snow Leopard DVD and go into Disk Utility to erase the drive, should I do a simple erase or should I also zero out the ...
1
vote
0answers
828 views

Migration Assistant fails to recognize a Time Machine disk (itself migrated using Disk Utility)

So I outgrow my Time Machine disk. I listen to the advice (repeated in multiple places) that one can simply use Disk Utility's Restore tab, select the old time machine disk as source and the new one ...
5
votes
2answers
23k views

How do I change a disk partition map scheme from MBR to GUID Partitions Table?

I just finished the huge download of Mac OS X Lion, started the installer, and now I have a problem. The installer says that I must have the GUID-Partitions Table Scheme. The problem is that when I ...
3
votes
2answers
650 views

Identify connected external disks programmatically

I want to write a shell script that ejects all currently-connected external drives (either USB or Firewire drives). I can use the disktuil eject <disk-path> to eject a specified drive. But I ...
1
vote
1answer
184 views

Expanding OSX partition and deleting Windows paritition

I have created a Windows partition with Bootcamp. Now I would like to get rid of this partition and attach the available space back to the primary Mac OS partition. I have found various tutorials ...
2
votes
2answers
2k views

Password protect folder without disk images?

Is this possible? I know you can protect a .dmg file, but is there a more convenient solution, by using a third party application?
2
votes
3answers
8k views

How can I tell if my iMac's hard drive is dying?

A couple of days ago, my three-year-old iMac locked up. When I rebooted it, it only displayed a folder icon with a flashing question mark. After a couple more reboot attempts, it booted. I ran Disk ...
6
votes
1answer
581 views

How do I clone a hard disk excluding some directories?

In preparation for Lion, I want to make a bootable clone of my system to an external harddisk. I use TimeMachine, but I want to be sure I have a running backup. Of course, there is much stuff on my ...
4
votes
3answers
469 views

Copying Time Machine backup, destination takes more than original size, are hardlinks being expanded?

I'm copying the backup folder of Time Machine, but it's taking too long, the backup is 90GB and the copy already reports 160GB and there's 60% to go yet, so I suspect it's copying hardlinks as ...
0
votes
1answer
1k views

Disk utility hanging

I'm trying to reformat the hard drive on an iMac G5 prior to selling it. I've booted the Mac from the installation DVD that came with it, opened Disk Utility, and told it to erase the drive using both ...
1
vote
1answer
483 views

dd to ISO from disc drive makes unmountable / unburnable image?

I'm trying to dd from a disc in my DVD drive on my MacBook to an ISO, but the image always ends up as unmountable and unburnable. The disc is unmounted when I start the process. I've used dd many ...
2
votes
1answer
199 views

Restoring User from Compressed Disk Image

Is it possible to restore a user's account and home folder from a compressed disk image of the Macintosh HD? The image was created using Disk Utility.
20
votes
2answers
8k views
1
vote
1answer
967 views

can't partition hard drive

I tried to make a partition on my macbook for windows. I was unable to do so, because, apparently, the hard-drive has been damaged. Since I do not have osx installation cd, I tried to recover using 1) ...
0
votes
3answers
2k views

Can't format an external HDD :Error: -9944: File system formatter failed

I have MacOs 10.6.6 and a Western Digital external 2.5'' HDD USB 3.0 pre-formatted to NTFS. I try to format the drive do HSF+ with DiskUtility program, but it says: Error: -9944: File system formatter ...
1
vote
2answers
2k views

Bootcamp and Windows 7 - Mounting the .iso onto a blank DVD-R

So im trying to install Windows 7 Ultimate via Bootcamp on my Macbook Pro 13"....Managed to partition the HDD but for some reason whenever I click install, the Macbook restarts and I'm met with a ...
2
votes
1answer
684 views

HFS on Snow Leopard read only

Snow Leopard seems to have dropped support for the HFS (not HFS+) filesystem in Disk Utility. I have an HFS disk image that I created on a Leopard system. In Snow Leopard, this disk image is read ...
1
vote
3answers
4k views

I have 21.5GB free. Why won't my MacBook Air 2010 let me use Boot Camp?

I'm trying to install Windows 7 on my MBA, 2010. I open up Boot Camp and attempt to use it, but after the first screen it comes up with an error saying it can't install unless theirs 10GB of free ...
11
votes
1answer
6k views

Can Disk Utility format an SD card with FAT32?

In the pulldown for "Format", there are only the following options (other than various Mac OS Extended variations): MS-DOS (FAT) and ExFAT.
5
votes
2answers
407 views

Software update never completes

I have an eMac (PPC G4) with 512 MB RAM, running 10.5.8. When I run Software Update, the "Checking for new software..." process never completes. I have tried deleting my ...