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

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3
votes
2answers
718 views

SSD reporting incorrect amount of free space, not due to local snapshots

I recently created a file of just over 20GB and then deleted it shortly after, however my free space did not increase at all. I am using a 2012 MacBook Air with a 128GB SSD and I've had problems ...
2
votes
1answer
176 views

Very strange partition table: Missing a sector between Main and Recovery partition

So I have been trying to get Windows 7 on my machine using no DVD or USB (I have only an ISO to work with). I used various combinations of Boot Camp, Toast Titanium, Virtualbox / VMWare, Disk Utility, ...
0
votes
1answer
165 views

How do I Create a Macro or Shortcut to run a Command Sequence Terminal

The following was posted as an answer to a question of read/write difficulties on NTFS drive which worked perfectly. Thanks Codler. My question is, is there a way for a noob like me to create a ...
4
votes
2answers
3k views

How do I recover an “invisible” OS X boot option in BootCamp (running on a 2013 MBA)?

Summary Unable to boot into the OS X partition of a 2013 MBA which dual-boots OS X and Windows 8 via BootCamp. Could "Repairing Disk" via "Disk Utility" damage the working Windows 8 partition? What ...
1
vote
1answer
628 views

Merging partitions separated by Bootcamp

In the process of installing windows on my MacBook Pro, I managed to somehow partition the disk this way. Is there any way of merging the UNTITLED 3 segment with the Macintosh HD segment without ...
2
votes
1answer
129 views

Editing Partition

When trying to edit a partition on my hard drive, Disk Utility says: Couldn't modify partition map because the file system verification failed. So I booted into single-user mode and typed in: ...
1
vote
1answer
90 views

I can't boot into single user mode

A while back I partitioned my hard drive into two equal parts. I completely forgot about it and then realized that I only had half of my original drive space available. I startup disk utility and ...
3
votes
1answer
108 views

Does using “rm” command cause journaling corruption?

Some time ago I had some problems with my Mac drive, so I went to the recovery partition and used Disk Utility to check for problems. It reported a huge discrepancy between the journaled free blocks ...
3
votes
1answer
396 views

In Disk Utility, what advantages do “read/write disk image”s have over “sparse bundle disk image”s?

If I want a read/write disk image, then aren't sparse bundle disk images always the way to go? They start at 0 kb in size, and grow to accommodate whatever you add to them, and if you delete stuff, ...
0
votes
1answer
128 views

How do I copy an NTFS partition to a writable disk image?

I have a drive from an old Windows computer. The drive is now in an enclosure, so it's accessible as if it were an external drive. It is formatted as NTFS. I would like to convert this drive (about 50 ...
1
vote
2answers
555 views

Can I make an OS X ESD (or other USB drive) read-only?

I have a USB Flash drive onto which I've used Disk Utility to restore the Mac OS X Install ESD: Is there a way I can make the result read-only, in order offer it at lease some semblance of ...
0
votes
1answer
287 views

Merge two disks to RAID 0 and keep my installation

I've got two 128Gb SSDs installed in my MacBook Pro. Originally I had one for the system (named Calcium), and one for the /Users folder, symlinked into the first (named Users). As I ran out of space ...
0
votes
0answers
19 views

Password Protecting Folders in OS X? [duplicate]

What methods exist (either inbuilt or via third party) to password protect (encrypt) folders within OS X ?
1
vote
0answers
140 views

Increased the Size of Bootcamp Partition but Winclone Restores Old Size Partition

I followed all documented steps to increase the Bootcamp partition size on the Mac OS 10.5.x. I used Winclone, Disk Utility and Bootcamp Assistant to perform this operation. In short, I cloned Windows ...
2
votes
1answer
265 views

Is my SATA cable damaged?

Macbook Pro Mid 2012, original SSD. TLDR; Why could I clone my unmountable drive from an external enclosure but not internally? My SSD broke down a few days ago. It was detected, but I was unable to ...
0
votes
1answer
179 views

I stopped Time Machine and I lost my files

I have a huge problem. It seems that I erased 1TB of my husband´s pictures (he is a photographer). He has a 2TB Verbatim external disk and today I was kind of playing with Time Machine. I don´t ...
1
vote
1answer
43 views

System Images with different Model Identifiers

I have been tasked with creating a default system image to use to both back up and use to deploy to new systems. After checking the stats on the 7 systems in question I've found that there are ...
2
votes
1answer
3k views

Unable to read last block of the device

I'm mid way through replacing the hard drive in my MacBook Pro (mid-2009). I've created a boot disk (10.8) on a SD card which I am booting from. On trying to format the new drive with disk utility ...
0
votes
1answer
253 views

AppleRAID 0+1 failure: [corestorage] LVG missing and cannot repair mirror

I just recently created a corestorage LVG and an encrypted volume that used an AppleRAID 0+1 array, but something has gone horribly wrong. I had four 1TB disks, and created two 2TB stripes, cbs1 and ...
0
votes
1answer
70 views

Time Capsule unmountable: Invalid B-tree node size

Some time ago my Time Capsule suddenly stopped working. Running Disk Utility on it gives me this error: Is there any way to fix this issue?
1
vote
3answers
834 views

Write .iso to USB on Mountain Lion [closed]

I'm trying to create a bootable USB for Windows using Disk Utility on OS X 10.8.4. Downloaded CentOS 6 for 32-bit and tried to use Disk Utility to create a bootable USB drive. This method failed with ...
0
votes
0answers
654 views

Dual partition a large drive for use by Mac and Windows

I have a 3TB USB3 drive that I want to use between my Mac and Windows laptops. A 1.5TB partition will be used for Time Machine and another 1.5TB partition will be used by Windows for file storage. ...
0
votes
1answer
2k views

How To Enable The “Hidden” Debug Menu? [duplicate]

Following on from my previous question entitled "What is the function(s) of the hidden Debug menu in Disk Utility?". How do I enable the Debug Menu via Terminal command or otherwise, thereby ...
3
votes
1answer
234 views

What is the function(s) of the hidden Debug menu in Disk Utility?

What is the function(s) of the Debug menu and why is it hidden by default?
1
vote
0answers
407 views

RAID 1 array degraded, now not being recognized by OSX

I've got a pair of Seagate 3TB HDDs in a mirrored RAID 1 array using a Vantec NexStar MX two-drive enclosure. The setup has generally worked fine for the last four months, but lately I've noticed that ...
0
votes
1answer
98 views

Apple Software RAID: Add disk to array online

I recently purchased a WD Thunderbolt Duo, which has two 4 TB drive, now running in RAID 0 with Apple Software RAID. My question is simple, if I am to get another Thunderbolt Duo next year, is it ...
0
votes
1answer
68 views

Problem with permissions

on my Lion Server I have noticed that the permissions for certain folders seem to be screwed up. When I look at the Get Info for the folder I see strange things in the permissions section. There are ...
5
votes
2answers
864 views

How can I make my computer believe a disk image is a hardware disk?

I'm trying to do some research on TimeMachine right now. I don't want to purchase an external hard drive, just to learn about some software, and so I'd like to be able to tinker with the settings, by ...
2
votes
0answers
340 views

How do I write-protect a partition of a USB drive on OSX that can work cross-platform?

I bought a bunch of USB sticks that I want to give as a gift to friends and clients, with some files on them. I'd like to have the files non-erasable (though I realise they can format the drive, I ...
1
vote
1answer
980 views

What's the difference between enabling Time Machine's “Encrypt Backups” option, and encrypting my disk from Disk Utility?

I'm setting up Time Machine backups on a new external hard disk. I chose to first encrypt the disk via Disk Utility: But I also see these options: Is there any difference between an "Encrypted" ...
2
votes
1answer
5k views

How can I modify a DVD image (ISO) and then burn a new DVD?

I have a (legit) copy of Star Wars Battlefront 1 for the Play Station 2 (PS2). There are game mods available (different character skins etc) that I'd like to try. Apparently this can be done but I'm ...
1
vote
1answer
154 views

fsck_hfs keeps crashing when trying to repair my Time Machine volume

I've got my Time Machine volume (direct attached, USB) corrupted by accidentally flicking the switch while it's running. Now neither Disk Utility nor fsck_hfs can repair the drive. Investigating it ...
3
votes
3answers
1k 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 ...
4
votes
2answers
16k views

installation stuck in a loop due to damaged HD

Right off the bat I'll admit it was stupid to jump into trying to install a new version of OS X to the only partition without having taken adequate precautions (no backups or recovery disks), but ...
0
votes
1answer
31 views

Any need to verify disks after hard reboot?

About every few days I need to reboot my 2012 MacBook Pro Retina. I noticed these messages in the logs regarding "Journal is read-only and journal is dirty. Can not mount volume". Any need to ...
2
votes
1answer
328 views

Does mounting a large disk image require a certain amount of free space on the internal drive?

I've got a bunch of Mac disk images (.dmg files) that are 100 GB or larger. I'm currently on an iMac with a few hundred gigabytes of free space, but I'm going to be moving to a Mac laptop with 128 GB ...
2
votes
0answers
156 views

MacZfs with encryption on os-x

I have followed these steps for setting up zfs (maczfs 74.3.0, OSX 10.8.3) with encryption. Everything works fine, till I restart the computer. After the restart, diskutil informs me that the file ...
1
vote
2answers
510 views

CoreStorage: what does LVG status 'offline' and PV status 'checking' mean and how can it be fixed?

I converted a partition to a CoreStorage volume using this command: sudo diskutil cs convert disk0s2 -passphrase test123 Now when I run `diskutil cs list' the output shows that I still only have a ...
2
votes
3answers
748 views

Understanding how safe boot fixed a boot problem

Background My friend asked me to look at her early 2011 Mac Mini with OS X 10.8.3. She said that: she installed software updates she couldn't remember which updates were installed when the Mac ...
2
votes
2answers
6k views

USB drive stuck on read only

So my usb drive is stuck on read only and I have tried many different options which I have gotten from different websites. I have tried to restore/erase in disk utility but the options are greyed ...
1
vote
0answers
288 views

MacBook Pro Mid-2009 13 inch does not recognize replaced hard drive

As the title states, I recently got a used Hard Drive from another MacBook Pro and installed it into my MacBook. The problem, is the laptop will not recognize it at all. The old hard drive just goes ...
0
votes
1answer
316 views

Carbon copy cloner to image OS X lion and restore from disk image

Is it possible to create an image of my 64gb 2012 Macbook Air using Carbon Copy Cloner so that I can recover from that image (if my Mac does not boot) when I am not connected to the internet? I can ...
1
vote
1answer
186 views

When creating a RAID 1 mirror set, do you need to have both disks available or can one be added later?

I'm planning my transition to Mac OS and I have a pair of mirrored drives I would like to move to my future computer. Since they are currently formatted as NTFS they will need to be reformatted during ...
0
votes
3answers
2k views

Unable to eject or erase USB drives

I'm unable to eject USB drives. When I try, I get this error: The disk "Untitled" wasn't ejected because one or more programs may be using it. To eject the disk immediately, click the Force ...
0
votes
1answer
637 views

Move of time machine backup: unable to “restore”

I want to use a new hard drive for time machine. I try to restore the old backup into the new disk using disk utility. It fails with the following error : source volume is read-write and cannot be ...
2
votes
2answers
585 views

Encrypted/Journaled Seagate won't accept Password

I have a 2011 MacBook Pro Intel running Mountain Lion. I have a 2tb Seagate External Drive with 3 partitions: all three were set up the same way with different passwords as a person who used to live ...
0
votes
1answer
550 views

Can a file be copied to one hard drive in a RAID 1 mirror set (software RAID), and later have the 2 drives sync up?

I think I read that we can set up a RAID 1 mirror set (software RAID) using OS X Mountain Lion using Disk Utilities, and later plug in one drive and copy a file to that drive, and later on, plug both ...
0
votes
1answer
743 views

Is it safe to reformat drive during Recovery Mode install?

I've inherited an almost brand new 13" Macbook Pro Retina. I'd like wipe the hard drive clean and start with a fresh install of Mountain Lion. I've done this a million times before... but never while ...
0
votes
1answer
674 views

Can I “restore” an iso image to my hdd to be bootable?

I removed my superdrive a while back but now I want to install a linux partition on my macbook. I installed rEFInd as my boot manager but now I need to boot into the arch linux iso. Normally I would ...
1
vote
1answer
566 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 ...