Commonly used to refer to Disk Utility.app, an application included with OS X.

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Program to find a specific picture on harddisk [on hold]

If I have a picture in a file, is there a program that can find the original picture in the harddisk? I have more than 100,000 pictures on the harddisk and I have many delivery notes that contain ...
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2answers
50 views

Microsoft disk integrity tools like ScanDisk, CheckDisk, and Error-Checking? How do they differ? [closed]

There's been something I've been curious about regarding 'disk integrity' tools for sometime now... Specifically, as regards computers that use an operating-system by Microsoft, there's been 4 tools ...
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0answers
42 views

Claim Free Space / Unallocated space back Mac OSX

I've got a 1TB internal HD that has 213GB of free space that I can't access. 1TB -> -- Macintosh HD 618GB -- Recovery HD 650MB -- BOOTCAMP 104GB -- Unallocated Space 213GB How can I add that ...
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1answer
56 views

Mount USB drive as local folder on Mac

I bought an external 1TB USB drive and I want to make my Google Drive use the USB drive instead of my external disk. The reason why I want to do this is because my Google Drive account is 1TB and my ...
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1answer
38 views

Need to Convert Dynamic Disk to Basic Without Formatting

My hard drives got converted to Dynamic in order to increase the number of partitions. I tried Partition Wizard Server Version, but its not working. I need to convert the partitions to basic to ...
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1answer
120 views

OSX Partition failed with the error: The chosen size is not valid for the chosen file system

So I had a failing 1TB drive in my macbook pro, I managed to copy it bit for bit to a new 2TB drive. The new 2TB clone now works fine. I have 2 partitions on the new drive, OSX yosemite and windows ...
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1answer
28 views

Identify latest added or updated files in Windows file folders

In Windows Explorer, I would like to list all the files in a folder, including those in subfolders, and sort them by the time they were added, or the last time they were modified. I am trying to ...
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1answer
41 views

Disk Utility Requires Admin Password

I've been experimenting with Disk Utility lately, trying to create a password protected folder. The strange thing is, I tried to make an image out of this folder called "Chess" and it created ...
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1answer
252 views

How to quickly force-clear the dirty bit on ExFAT filesystem

My ExFAT partition is about 1TB and it takes chkdsk about 10 hours to check and clear the dirty bit flag. There is never an error. It is caused by the drive being disconnected in an unsafe manner (it ...
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43 views

ddrescue failing with very large errsize (hundreds of terabytes)

I'm trying to rip a CD-ROM to an ISO file. I prefer an ISO file to a DMG or CDR file because of cross-platform compatibility. I tried using ddrescue, but no matter what options I use I get the ...
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98 views

Failed Yosemite TimeMachine “Use Drive (with Encryption)” renders drive unmountable on reboot

I turned on TimeMachine and told it to use my Drobo volume for backups, and checked the box for encryption. It thought about it for a few minutes and then bailed with an error stating that it ...
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254 views

OS X - Disk Utility - “Free Space” on external HDD can't be modified

I have an external 1TB HDD and can assure it's fully working. Now I wanted to split it into two partitions, one for r/w on OS X and the other one for r/w on Windows. However, I selected Free Space ...
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74 views

diskutil shows Macintosh HD is missing (with Recovery HD occupying the entire space)

So yesterday I managed to screw up my iMac 2012 (with Fusion Drive) by installing the Mac OS 10.2.2 update... The installation stalled and when I tried to restore from an external drive using Time ...
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1answer
200 views

Recovering data from a lost/deleted HFS partition in Mac OS X

I have a 2TB hard drive with 2 partitions. It got partition by a program into 5gb accidentally. I tried using Disk Drill Pro to recover the lost partitions and it could see it but could not rebuild ...
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31 views

How to throttle performance of a VHD (Virtual Hard Disk )

I'd like to be able to throttle the performance of Reads/Writes on some of my disks. While I know it might be pretty difficult to control that on actual Physical disks, is there any tool which can ...
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2answers
465 views

Partitioning issue after HDD to SSD sector copy and swap in Mac OS X 10.10 (Yosemite)

Recently decided to replace my nearly full 500GB hard disk drive with a 1TB SSD to breathe some new life into my mid-2010 MacBook Pro. I used a “toaster”-style drive cloner (Dyconn Dubbler) to do a ...
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1answer
57 views

How to merge a spanned volume?

I have ended up with my D Volume spanned over multiple partitions (On one physical drive) How do I merge them? (They are adjacent). Or how can I safely get my data off some of the partitions (So I ...
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0answers
256 views

diskutil rename error: “does not appear to be a valid volume name for its file system”

I'm trying to rename the volume name of a mounted ISO image using the command: diskutil rename /dev/disk15 TEST_DISK_2014_RENAMED I get the error: TEST_DISK_2014_RENAMED does not appear to be a ...
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1answer
1k views

Unlocking FileVault encrypted drive from Terminal (to allow pasting password)

I have a long, complicated password for an external drive encrypted with FileVault that I have securely stored, but OS X doesn’t allow pasting into the password unlock GUI dialog (argh!). How can I ...
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1answer
606 views

Cant boot MacBook Pro - HDD File System is Read-Only

I have a big problem - I think. The problem seems to be that my HDD is Read-Only so I cant boot and can not erase the HDD to reinstall the system. But here is the whole story. I bougth a used ...
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0answers
56 views

How to calculate size of a VERY large folder over FTP?

I have FTP access to a web-server which has a large folder (By large I mean ~200GB). How can I get number of files and it's exact size? I have tried 'du -hs' but it takes a life to receive a response ...
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20 views

Laptop Harddisk not working

I have a segate hard disk (Laptop HD). Which stopped working unexpectedly. I just Google'd and tried few thinks to get it to work. But nothing seems to be happening. I tried connecting the HD to my ...
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0answers
36 views

Write back partition being resized

I have problem with my mac it don,t boot. After some research i find out that it mark partition as crashed and want to check it. But while checking it say invalid sibling link and can't repair because ...
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2answers
479 views

Are these unrepairable SSD errors indicative of a SSD hardware error?

Some time ago I got an Apple authorised reseller to replace the SSD in my early-2011 model MBP with a Samsung 512GB 840-series disk. About three months later, booting failed with this error: Please ...
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23 views

Backup from HD Image (Mac)

I am trying to recover a system from a dmg. I copied the dmg onto my Documents folder and select the correct drive as shown: I did this by 1. dragged and dropped `MacIntosh HD` onto the ...
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22 views

Copy image/disk/partition, not necessarily entirely and with compression for image

As my last question was considerated "off-topic", here it is reformulated : I have a 16GB SDCard but I put 4GB image on it and I want to be able to extract&store compressed only the 4GB image ...
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1answer
24 views

Perform trim-like operation on a normal HDD?

Is there a way to perform the same thing on a HDD as Trim does on a SSD. I assume the used sectors should be rewritten with 0 or 1.
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1answer
8k views

Unable to create disk image using disk utility (Input/output error)

I want to create a disk image of source 100.03 GB Ext Hard Disk Media on destination 5TB Lacie ST5000DX000-1H2170 there is greater than 1TB remaining on the destination disk. The Disk Utility progress ...
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2answers
175 views

Use free space on a Mac (with a SSD)

I have a MacBook Air with a 128GB SSD, I installed Yosemite on a second partition then removed it and now I have that: 50GB of free space and I can't find how to give it to Macintosh HD (the ...
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1answer
45 views

usb hard disk can be read by device manager not be read by disk manager?

Today when i format my usb hard disk ,the power is off ,when power is on again ,i reboot my pc ,something wrong with my usb hard disk. The usb hard disk can be seen in Device Manager ,but can not be ...
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1answer
138 views

OSX partition smaller than 16 GB

I'm trying to create a new partition because I need a case-sensitive filesystem for web development. But the Disk Utility won't allow me to create one smaller than 16.84 GB. What am I doing wrong?
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229 views

AppleScript shows “Document could not be opened. You don’t have permission.” but file can be opened?

I am getting a "The document [filename] could not be opened. You don't have permission" when attempting to access several files in an AppleScript. However, I can open these files manually without ...
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0answers
979 views

Why would re-formatting an external disk drive stop random drive disconnects in OSX Mavericks?

My old MacBook Pro Retina was over heating, so after a long story omitted, I got a new MBP Retina with Mavericks pre-installed, and my Seagate Thunderbolt(TB)/USB3 drive started unmounting and ...
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1answer
9k views

Getting the diskutil command to work in OSX Mavericks Single User mode

I'm currently writing some single user mode maintenance scripts. My current goal is to be able to perform permission repairs and disk formatting using the diskutil command in Single User Mode. ...
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2answers
1k views

Partition corruption, still can see files in single user mode, would like to retrieve files

The problem started after forcing the mac to shutdown. Since then, when trying to boot, it stays stuck at the grey apple with spinning wheel. I've tried a few generic things to be able to access my ...
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1answer
3k views

zpool: pool I/O is currently suspended

I'm using ZFS on OSX and I've zpool which is active and online: NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT WD_1TB 931G 280G 651G 30% 1.00x ONLINE - but I can't ...
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1answer
176 views

unrecoverable root partition when used as a second hard drive

What I did with my Macbook, I removed DVD driver ant mounted my old macbook hard drive there. BTW, my old disk was split into 2 partitions: root and data. root partition is where system files and my ...
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352 views

How to make bigger Macintosh HD partition

I installed OS X Mavericks Server as a virtual machine to ESX. I'm doing some testing and now I need more space. Macintosh HD partition is 50 GB and I have expand it to 100 GB total in ESX but I need ...
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1answer
2k views

Delete EFI Partition

I run diskutil list and have this schema: /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk1 ...
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3answers
6k views

Why is Disk Utility / diskutil taking so long to zero out data?

I've tried with Disk Utility.app and diskutil at the commandline to zero out a 3TB external USB hard drive, and both work at about 1%/1hr. In Disk Utility.app I am using the 1-pass mode, and with ...
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1answer
8k views

Unable to delete or re-partition internal drive using Disk Utility

When using Disk Utility, after booting onto the recovery partition, I can't... Re-partition Delete partitions Repair partitions
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1answer
37 views

Restoring mac to pre OS install attempt

I recently tried to install the new OS X maverick, but about 4 min into the process it told me my disk needed to be repaired. That I should back up my stuff and restore the drive. I will do that, but ...
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1answer
104 views

Retina MBP won't recognize Archboot flash drive

I'm trying to install Arch on a flash drive. To do so, I'm trying to first get a bootable, "live" version of Arch on the flash drive I'm going to install it on later. I've followed the instructions ...
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2answers
4k views

Mac OS not allowing for disk partition

I tried adding a disk partition through Disk Utility on a Retina MBP under OS X 10.8.4. It was supposed to be a small, ~20 GB ExFAT partition on a 512 GB disk. For some reason, my disk was ...
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1answer
73 views

Disk Utility not finding disk

I have an external drive that was dropped. It doesn't mount anymore on my OS X box and Disk Utility doesn't see it. Is this the point where I'd need to bring it somewhere for expensive data recover?
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2answers
20k views

Why is “/dev/rdisk” about 20 times faster than “/dev/disk” in Mac OS X

According to the rasbery pi documentation, You can load your OS to a flash card with either /dev/disk or /dev/rdisk. rdisk stands for raw disk. /dev/disk is a block level device, why would rdisk ...
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1answer
12k views

MacBook Air startup disk not found, but verified

I have a MacBook Air that has suddenly stopped booting at all. I booted into recovery mode and see the harddrive fine in Disk Utility. The partition is there as well marked: Mac OS X Base System. I ...
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2answers
455 views

palimpsest not opening the disk management

I am using Ubuntu. I found from web search that to open Disk management below command is needed: sudo palimpsest But when I am trying it in the terminal and result was : command not found. I also ...
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4answers
883 views

Is CHKDSK a warning sign of failing drive?

This morning CHKDSK ran on its own during boot. It scanned 1 out of 3 HDDs in my PC. Is it a warning sign that that particular HDD is about die?
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1answer
288 views

Not enough disk space when doing a SOAP request on mac osx

I'm on Mac osx, I'm sending a SOAP request and the response is: There is not enough space on the disk. <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> <s:Body> ...