Tagged Questions

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

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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 ...
2
votes
2answers
6k views

Restore disk in single user mode

I wonder if it is possible to restore one partition to another in command line? The similar operation can be performed with Disk Utility, but unfortunately I cannot boot in graphics mode (even safe ...
6
votes
2answers
2k views

What terminal command or program can list an SSD's Power On Hours?

I'm looking to script using the unix shell the retrieval of SSD (and HDD) data that disk utility shows in the information window. I'm immediately interested in the Power On Hours and Power Cycle, ...
4
votes
1answer
3k views

How do I erase an encrypted TimeMachine drive on Mountain Lion if I've forgotten the password?

My question is similar to this question. I have a USB drive that contains an old encrypted backup. I don't remember the password and don't care about loosing the backup - I just want to be able to use ...
0
votes
1answer
2k views

i think my harddrive died? did an internet recovery, whats the status of my computer? can't restore from backup until i get home

so for some reason my 2011 MBP died on my way to work this morning? when i got in and booted it up, it froze. i restarted it and got a flashing folder with a question mark on it. what does this mean ...
0
votes
1answer
664 views

Boot Camp / Partitioning Weirdness

I have a MacBook Pro, running 10.8.2. I'd like to give Windows 8 a go, using Boot Camp. Now, I've probably done a b Boot Camp install of Windows close to 10 times, on multiple Macs, but I'm stumped ...
1
vote
3answers
3k views

How do I restore a Windows 7 DMG file to Boot Camp (and make it bootable)?

My iMac's HD died last week, and so I was unable to access OS X (I had a Time Machine backup of it though). Fortunately I was able to boot into the Recovery HD and use Disk Utility to backup Boot Camp ...
3
votes
4answers
8k views

Recovering data off of a dead hard drive

My hard drive died in my macbook and it no longer will start up. It will not mount in an external enclosure but disk utility is still reading that the hard drive is there, and I tried to repair disk ...
0
votes
2answers
2k views

Can I have an Encrypted Partition in a 2 Partitions USB Stick?

I have a new 16Gb USB key and want to take advantage of Disk Utilities feature to encrypt it, however I do need to move data from Mac to Windows from time to time. Is is it possible to have one FAT ...
6
votes
3answers
6k views

Creating boot disk for Windows 7 on MacBook Pro

EDIT: I gave in and burned the DVD from a windows PC and I was able to install Windows on my MacBook Pro with Bootcamp. Sorry, that I don't have a satisfying solution. My goal is to install Windows 7 ...
2
votes
1answer
100 views

Disk Utility: choose disk or volume?

When using disk utility to verify/repair permissions (or verify/repair the disk itself), I've never been clear whether I should perform operations on the disk ("WDC WD1200BEVE-00WZT0" in my case) or ...
0
votes
1answer
497 views

How to enable “Repair disk button”?

Here what happened with me today. TimeMachine asked me whether I want to set a backup disk, I've answered yes, but then, when I've realized that in order to backup anything TimeMachine will clean the ...
0
votes
3answers
332 views

HD scan in Mountain Lion

I suspect a faulty drive. Anything that could perform a hardware scan (bad sectors?) built into Mountain Lion or available for free off the 'net?
4
votes
2answers
3k views

Why does OS X now think I have two partitions on my external USB drive (plus random connection issue)?

I have an external USB drive that I have plugged into a USB hub, which gets unplugged from my computer about once a day. Most of the time I remember to unmount the drive before disconnecting so that ...
3
votes
1answer
13k 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 ...
3
votes
1answer
1k views

JDiskReport is damaged, can't be opened

I have tried downloading and running JDiskReport 1.4 a few times now, and after unzipping it and clicking on the executable I get the message: "JDiskReport" is damaged and can't be opened. You ...
1
vote
1answer
428 views

Files in ISO DIsappear When Mounted

Some time ago I downloaded a QuickLook plugin that allowed me to look at the files in an ISO called Suspicious Package. I used this to inspect the contents of an ISO and it displayed this: And ...
2
votes
1answer
477 views

Data recovery on Lion with a disk that disk utilities cannot mount?

I ran iDefrag last night because my MBP was running sooooo slow. I barely ever use it and it has 300 GB of free space. I used to use OnyX to optimise the disks on Snow Leopard but I didn't see that ...
1
vote
1answer
2k views

What does “DOE compliant” mean in Disk Utility?

When erasing a drive with Disk Utility, you have a couple options. An insecure wipe, a single pass of zeroes, a "DOE-compliant" 3 pass, and a DOD (Department of Defense) 7 pass. DOE doesn't stand ...
5
votes
1answer
579 views

Presence of a Linux partition causes FileVault2 setup to fail

I'm currently dual booting Mountain Lion and Ubuntu 12.04 on a rMBP. Everything works fine, but enabling FileVault fails with the error message: "Some information was unavailable during an internal ...
1
vote
1answer
797 views

FAT16 disk refuses to mount in Mountain Lion

I've recently resumed a small OS-from-scratch-in-Assembly project I started several months ago in Lion. Part of the project involves compiling a binary file with NASM (the one that is pre-included), ...
3
votes
1answer
925 views

Is FileVault distinct from Finder's “Encrypt …” command?

I'm confused by the variety of methods for encrypting drives in Mountain Lion. There are at least four methods, FileVault in System Preferences; Finder's "Encrypt..." command; Disk Utility's "Erase" ...
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
699 views

What causes me to be unable to burn Windows 7 ISO due to a medium error?

I've just upgraded my 2011 17" MacBook Pro with a brand spankin' new SSD hard drive and 8GB of RAM. In order to fully maximize the potential of the system, I'd like to install Windows 7 to take full ...
2
votes
2answers
304 views

Exact clone of HD

I managed to broke something on my iMac's internal HD. I have now done a successful restore using DiskDrill, but just in case I want to make an exact copy of the internal HD. Not just some partition, ...
2
votes
1answer
7k views

For a startup volume encrypted with Core Storage, System Preferences show that FileVault is disabled

My iMac has a SSD and a HDD. The OS is installed on the SSD. I performed a clean installation of Mountain Lion to the SSD, and cloned my SSD using a backup from my Time Capsule in OS X Recovery. ...
1
vote
1answer
1k views

How to create a disk image from the command line

Currently part of my build process is as follows; Start Utilities/Disk Utility Select New Image Set Save As to widget Set Name to widget Set Size to custom size 50 mb Set Format Mac OS Extended ...
1
vote
0answers
417 views

“Invalid key length” - corrupt partition after power outage?

I recently lost power overnight with my computer up and running, external hard drives plugged in, and in the morning my login screen had the "Device Removal" error as if I unplugged the disk without ...
1
vote
4answers
6k views

How to install Mountain Lion on a disk that cannot be formatted in recovery mode?

I'm trying to do a clean install of Mountain Lion but I'm not being able to format my partition. I previously had Lion, encrypted the disk, then upgraded to Mountain Lion, then booted into recovery ...
3
votes
4answers
1k views

What techniques for disk, volume and file system management are possible with OS X, but troublesome within Disk Utility?

In the past, Disk Utility was the best starting point for the vast majority of disk-related tasks. As technologies within (or possible with) OS X have developed – without equal development of Disk ...
1
vote
2answers
841 views

Mac: how to securely delete an SD card?

Nothing I have tried gives me read/WRITE access to my SD card from my Canon camera. How can I secure-delete before selling the card on eBay? (the lock switch is on: unlocked - tried the other position ...
0
votes
2answers
1k views

Disk Utility says disk is corrupt after running fsck -fy

Disk utility reports that the disk needs to be repaired. I can't find the original boot disk, so I booted to single user mode and ran: fsck -fy This reported that it fixed a problem, and that the ...
1
vote
1answer
385 views

How can I use an external HD to boot from in Snow Leopard?

Recently my OS X Snow Leopard has been taking a really long time to boot up. Suspecting that something might be wrong with the HD I did a disk verification using the Disk Utility. It showed me an ...
0
votes
1answer
166 views

Filesystem check on startup

as Mac OS X in part is an *nix operating system. Will the filesystem of my computer be checked periodically? How to check when the next check will be triggered, if it is checked periodically? My ...
2
votes
2answers
5k views

Clone the Windows partition with Carbon Copy Cloner?

I have bought a new Hard Drive and I want to switch from my old disk to my new one. Time machine will do the job for my Mac partition, but not the Windows partition I guess. So I'm looking for way to ...
1
vote
1answer
459 views

Can Disk Utility and Disk Warrior be used on a Fusion volume containing Mac OS X

I have Snow Leopard Server 10.6.8 running in a VMware Fusion 4.1.3 virtual machine. When I run a Disk Utility "Verify Disk" from within the VM, errors are reported. Invalid B-tree node size ...
0
votes
0answers
749 views

How to “scan disk” or “repair disk” by booting up in single user mode and scan disk?

I think when we are using the Mac, we can't choose "Repair Disk" in Disk Utilty to repair the current hard drive, as the drive is being used. If "Verify Disk" is used, it only takes about 3 to 5 ...
1
vote
2answers
4k views

Disk Utility Error “Storage system verify or repair failed”

Installed Lion on a brand new HDD. Boots fine, but when I run Disk Utility on the Media, it reports Verifying partition map for “WDC WD10JPVT-16A1YT0 Media” Checking prerequisites Checking the ...
1
vote
2answers
912 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 ...
1
vote
2answers
2k views

Can't see new SSD when connected via internal SATA port

I just bought a new Samsung SSD 830 and installed it my 13" MacBook Pro (Mid 2010) in the hard disk bay, replacing the drive that was there (I actually have a second drive in the optical drive's ...
1
vote
1answer
722 views

Repair disk on Snow Leopard using a bootable USB, in order to upgrade to Lion

[Mid-2010 MacBook Pro running the latest version of Snow Leopard] I read in many places that you should always do a "Verify Disk" in Disk Utility and resolve any errors before upgrading to Lion. I ...
0
votes
1answer
1k views

Can't restore image to USB stick

When I try to restore, I get message: Could not validate source - Operation not supported haven't seen anything like this on the web
0
votes
1answer
1k views

USB pendrive/disk formatting clarification

I have three doubts regarding USB pendrive formatting. 1) Is there is any simple/quick way to format the USB pendrive from MacBook Pro? Now, I am doing this by Applications/Utilities/Disk Utility ...
5
votes
1answer
2k views

How can I tell which volume the operating system is on?

I'll admit that I am kind of rolling multiple questions in to one here so please forgive me and try not to knock me for it. I am new to Mac but I'm trying to port one of my Java applications to OS X. ...
1
vote
1answer
892 views

How to clean up partitions after OS X is moved from HD to SSD

Yesterday an Apple Certified Macintosh Technician installed an SSD into my iMac medio 2011. The iMac was born with an 1TB HDD but now a Crucial M4 SSD is also installed inside the mac. I've moved my ...
1
vote
1answer
2k views

How to move boot and recovery partition from HDD to SSD

Today an Apple Certified Macintosh Technician has installed an SSD into my iMac medio 2011. The iMac was born with an 1TB HDD but now a Crucial M4 SSD is also installed inside the mac. I've moved my ...
1
vote
1answer
939 views

Ejecting USB drive via AppleScript does not make drive power down

On startup, I eject my external USB disks with the following AppleScript: try do shell script "diskutil eject \"/Volumes/USB Backup\"" end try This works as expected: the drive powers down. ...
1
vote
0answers
146 views

Find Time Capsule HD Specs

How can I find out the specs from my Time Capsule hard drive? It doesn't appear in Disk Utility (a mounted disk). More specifically, I'd like to know the manufacturer and model, much like the System ...
3
votes
4answers
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 ...
8
votes
2answers
5k 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 ...