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

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26
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3answers
62k views

How to resolve error: “Couldn't modify partition map because file system verification failed”?

I upgraded to Lion and decided I no longer want 100 GB of my drive devoted to Boot Camp, I never boot into Windows, I just use it as a VM anyways. So I deleted the boot camp partition using disk ...
1
vote
1answer
411 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
4k 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 ...
3
votes
1answer
596 views

How do I move Mac and Windows partitions to single Hard Drive?

I have this scenario: 600 GB Hard Drive, using Master Boot Record 300 GB Windows 7 x64 Parition, NTFS 300 GB free Space 1 TB Hard Drive, Guid Parition Table 730 GB Data Partition, exFat Two More ...
0
votes
2answers
353 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 ...
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.
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 ...
2
votes
3answers
12k views

Changing a Volume's “Device / Media Name”

I know a Mac volume can be renamed... obviously. But if you look at the output of diskutil you will see that a volume also has a "device name" that corresponds to the name it was given when it was ...
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
463 views

Repartitioning after Bootcamp problems

When I first got my MacBook Pro, I installed Windows 7 via Boot Camp. A couple months later I wanted to install Ubuntu and have a triple boot. I followed this tutorial: triple-boot After I finished ...
3
votes
2answers
2k views

What are the purposes and safety to enable the hidden debug menu in Disk Utility?

I'm primarily interested to know whether installation of Lion included the Recovery System. I understand you can enable extra formats and debugging in Disk Utility, using the following commands: ...
4
votes
5answers
11k views

Unable to increase Macintosh HD partition size with data in a subsequent partition

I can't make my main Macintosh HD partition bigger. It's limited by the FAT partition in the middle, which seems to be frozen, I can't move it down to make space for my main partition. To get some ...
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
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 ...
11
votes
7answers
23k 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?
2
votes
3answers
5k views

Unable to resize Lion partition

I decided to do a clean install of Lion on a new partition, then after copying my stuff removed the old one. I'm now stuck with 100~ GB of free space and a 20 GB partition that Disk Utility won't let ...
3
votes
1answer
1k views

Repairing Time Machine volume taking forever

Over 18 hours and counting, currently in the "Checking multi-linked directories" phase, but it's been there all night long. I see disk I/O, not a lot, but some. I assume its from the TM drive as the ...
1
vote
0answers
839 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 ...
3
votes
4answers
40k views

How can I fix an Install Failed error while installing Lion?

I downloaded the new OS X Lion from the App store. I am running the latest Snow Leopard on my 2010 15" Macbook Pro. During the download, it somehow stopped while I was away from the keyboard. When I ...
8
votes
4answers
46k views

How can I resize a partition with Disk Utility?

I have 2 partitions, I reduced the size of one and want to expand the other to fill the now available space. How do I expand the Lion Partition into the empty grey space beneath Macintosh HD ...
5
votes
2answers
24k 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
673 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
187 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 ...
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 ...
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 ...
0
votes
2answers
252 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 ...
1
vote
2answers
230 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
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 ...
6
votes
1answer
619 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 ...
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 ...
2
votes
2answers
1k 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' ...
4
votes
3answers
479 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
3answers
770 views

Time Machine sparsebundle corrupted on disconnect

I've been using Time Machine over wifi and have had a recurring problem with corrupted sparsebundles. The scenario is a relatively new Airport Extreme, a MacBook with Leopard, and a partitioned ...
2
votes
2answers
4k views

Unhide Partitions via Terminal

Is there any way to unhide partitions that have been hidden by a third party partitioning tool on a Mac using nothing more than Terminal via a Mac OS X Boot CD or USB stick? Edit These partitions ...
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
494 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
206 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.
1
vote
2answers
995 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 ...
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: ...
2
votes
1answer
696 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 ...
0
votes
2answers
2k views

Can I repair my system disk (10.6) by booting off a 10.5 install CD?

I'm running Snow Leopard (10.6) and OnyX told me I need to boot from my install CD and use Disk Utility to repair my drive. (It wasn't any more specific as to what the actual problem was.) I can't ...
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 ...
22
votes
2answers
9k views

What is the difference between a “sparse disk image” and a “sparse bundle disk image”?

What are the differences between sparse and sparse bundle disk images?
4
votes
3answers
2k views

How to create a bootable USB drive for Disk Utility?

Disk Utility says my boot drive need repair. Unfortunately my DVD drive is toast, so I can't boot from the install DVD and make the repair. Is there a way I can create a bootable USB drive and ...
4
votes
2answers
3k views

Optimal method to test an external hard drive?

I've got an HFS+ formatted external drive that is starting to act a bit funny, mainly causing my mac mini (finder) to freeze up on occassion when accessing it. Fearing imminent failure, what is the ...
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.
3
votes
4answers
2k views

“Not enough space” on partitioning?

I have a 320GB harddrive with 95GB free. I boot to a 10.5 disk, open disk utility, and add a 40GB partition. Halfway through the progress bar, though, it tells me that there's not enough space. I'm ...