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

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138 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 ...
0
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4answers
5k 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 ...
0
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0answers
90 views

How do I create a bootcamp partition with bootcamp when having enough space but Bootcamp disagrees?

Hey guys, Im trying to create a bootcamp partition via Bootcamp on my mac, however I keep getting prompted with "You have too few space to create a bootcamp partition. You need atleast 10GB free ...
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2answers
4k views

How to fix Disk Utility, About This Mac, and Finder that disagree on hard drive space usage?

Has anyone seen this issue and know how to fix it? Look at the free space reported by running "Get Info" on my hard drive (Macintosh HD) in the Finder, "About This Mac" from the Apple Menu, and Disk ...
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0answers
37 views

How to back up a bootable clone while booting from it?

I back up my Mac using both Time Machine and a bootable clone - the idea being that if 'something goes wrong', I can boot from the clone and keep working. I read somewhere that once you start working ...
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1answer
166 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 ...
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1answer
41 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 ...
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4answers
7k 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 ...
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1answer
67 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?
3
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1answer
216 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?
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0answers
605 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. ...
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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 ...
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0answers
387 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 ...
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1answer
92 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 ...
3
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3answers
1k views

Why does RAID 1 “Mirroring not provide performance improvements”?

I have always used Software RAIDs, either Apple-provided, or via SoftRAID, etc. I am about to re-zhuzh my arrays and decided to do a little research beforehand… and On Apple's site, there is a ...
5
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2answers
762 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 ...
6
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4answers
4k views

What are the sector sizes on Mac OS X?

I read on the HFS Plus Wikipedia page that the default sector size on a Mac is 512 b. However, I also read that Macs support 4kb sectors. How can I determine which I have, 512 b or 4 kb sectors? I ...
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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 ...
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0answers
320 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
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1answer
149 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 ...
1
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1answer
233 views

Resize Boot Camp partition

I installed Windows 8 on my MacBook Pro using Boot Camp. Now I've figured out I should have made the Windows 8 partition bigger. Is this safe to attempt using Disk Utility? If not, how do I go about ...
0
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1answer
30 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 ...
0
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1answer
321 views

Bootcamp assistant won't let me increase the Windows partition

I'm trying to install Windows 7 on my Mac. The Bootcamp Assistant won't let me increase the Windows partiton's size above ~45 GB. I've got 200 GB free out of 500 GB on my SSD. I run Disk Repair, but ...
2
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1answer
298 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 ...
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votes
4answers
6k 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
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0answers
153 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 ...
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 ...
2
votes
3answers
680 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 ...
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3answers
519 views

How to auto-run disk repair on OS X after each system crash?

How to auto-run disk repair on OS X 10.8+ after each system crash? Note: I am not looking for a manual solution.
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0answers
259 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
299 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 ...
2
votes
1answer
1k views

Disk Utility: Incorrect number of file hard links

I'm running Mountain Lion on my Mid 2009 MBP. Recently(for last few months) it's acting really slow. Simplest actions are taking forever to perform. So I verified disk using the Disk Utility and it ...
3
votes
3answers
2k views

Secure erase drive in Single User Mode

My 2007 Macbook Pro has suffered from a failure of its GPU and will now only boot in Single User mode. I want to sell it on eBay for spares, but obviously I don't want a hard drive with live data ...
0
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1answer
520 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 ...
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0answers
313 views

External Harddrive is showing in System Information but not Disk Utility

My harddrive crashed last night and since then I have not been able to access it on my Macbook Pro. I've restarted both my computer and hardrive multiple times and I've experienced the same result. It ...
1
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1answer
590 views

Can't do anything with external hard drive, “.Trashes” is probably the boogyman

I bought an external Samsung hard drive today. But I'm not able to do anything with it. Here are the problems I'm having: I can't put anything on the hard drive. Finder gets stuck at 'preparing ...
0
votes
1answer
83 views

Hard Drive Preview / Disk Utility Used Space Discrepancy? [duplicate]

So I recently cleared a lot of space off of my hard drive as a sort of "spring cleaning," and I got it down to less than 40GB, but my computer doesn't seem to agree with itself on that. If I look at ...
1
vote
2answers
790 views

Disk Utility Disk Verification

I ran the "Verify Disk" tool in disk utility on my main disk called Macintosh HD, and it came up with this log: Verifying volume “Macintosh HD” Checking storage systemChecking volume. disk0s2: Scan ...
18
votes
3answers
43k 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 ...
3
votes
1answer
381 views

Erasing partition doesn't give me free diskspace

I'm using a Macbook Air and until today I had two partitions on it (not counting the restore partition). I had my OSX partition and an Ubuntu partition. As I don't use Ubuntu anymore, I decided to ...
4
votes
1answer
2k views

Can I partition an iPod (nano, classic, shuffle) for use as a flash drive?

I have made an iPod nano appear as a flash drive by going to iTunes and checking "Enable disk use." However, I am short of a large enough USB key to hold a bootable Windows 8 installer for use by Boot ...
6
votes
4answers
30k 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 ...
3
votes
2answers
2k views

Mac Hard Drive Testing Tools and SMART Analysis

How good is SMART (Self Monitoring Analysis and Reporting Technology) for really finding and predicting drive problems for regular hard drives and now, for SSDs. From what I understand, different ...
0
votes
4answers
3k views

What to do when my Time Machine drive is getting disk errors?

My Time Machine drive is getting disk errors. I used Disk Utility and ran "Repair Disk" on my Time Machine partition (NOT the drive) and I got the error "Incorrect number of directory hard links" ...
1
vote
1answer
2k views

Unable to adjust partition of USB drive with Mountain Lion Disk Utility

I have a 500 GB USB drive, which I once partitioned into two parts: one encrypted—Mac OS Extended (Journaled, Encrypted), and the other not—Mac OS Extended (Journaled). Now I want to change the ...
2
votes
0answers
4k views

How do I force a partition and format on a USB key in OS X Mountain Lion Disk Utility or from CLI diskutil?

I have a brand new Memorex TravelDrive 64GB USB disk which is being troublesome. It's formatted FAT16 on MBR, which is not so nice, and I'd like to put it on HFS+. I've tried to do this through ...
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vote
1answer
2k views

How to remove the use of master boot record from an external hard drive?

I have a 1TB external hard drive and I want to slice it into different partitions. When I try to do so, I get this error: can not modify external drive because it uses master boot record Is ...
2
votes
1answer
2k views

How can I reformat a drive that contains an encrypted volume?

After OS X 10.7 came out with its disk-encryption features, I encrypted an empty USB thumb drive just for grins. I never used it, and eventually decided to reformat it as a normal drive for use with ...
2
votes
0answers
195 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 ...
3
votes
1answer
10k views

Create new partition in unallocated space with diskutil

I have deleted the first partition on my external HD such that it now has 100GB of free space at the beginning of the partition. I'd like to reclaim that space, but Disk Utility doesn't let me create ...