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

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Formatted USB flash drive with Disk Utility on Mac and now it is not recognized on any Mac or Windows machine

I have formatted Canyon CN-MP4A USB flash drive with Disk Utility on Mac and now it is not recognized on any Mac or Windows machine. I have formatted with Disk Utility > drive > Erease > ...
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2answers
552 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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2k 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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188 views

Disk Partition on Ubuntu

I have a 750 GB hard disk and GB RAM. I will setup LAMP on my system. Now my problem is, how I will make the disk partiton so that I will keep 300 GB for my localhost and the rest of memory will be ...
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111 views

Ubuntu Disk isn't showing up at Boot

I recently installed ubuntu on a flash drive, following all of the instructions on the ubuntu website. When I started up my mac, it didn't appear in the boot menu. Has this happened to anyone else ...
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512 views

How do I get the Smartware tools working on the HDD itself?

WD My Passport 0740 - WD Smartware I'm posting because I have a problem with the Smartware that was IN the HDD. A friend of mine accidentally deleted the folder Smartware (that I created and placed ...
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457 views

MacBook Pro 13" (Mid-2009) hard drive utility disk read error

My MacBook Pro was running normally a few days ago but all of a sudden in the middle of a garage band session, I got the beachball. I then realized the whole computer was frozen. I have had this ...
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905 views

MacBook Pro not recognizing external HDD

My hard drive is about to flake out, and I'm trying to back everything up before it dies. However, it is now not recognizing my LaCie external hard drive. I can see the drive in Disk Utility, and I ...
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114 views

What are my options for a disk with what seems to be a corrupted filesystem?

I have a friend with an old Dell that will not boot into Windows. It has an IDE drive. It spins up. I have an IDE to USB device. I've attached the drive via that device to a working laptop. The ...
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1answer
88 views

Zerofree never ends. Is it doing anything?

I have been trying to use zerofree to reduce the size of my VM. It worked fine for one filesystem, but the other was mounted on / so it wouldn't let me. Then I figured I could use the 'recovery ...
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1k 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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873 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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1answer
36 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
3k views

How do I reformat an unmountable/unrecognised/unformatted USB drive?

How do I reformat an unmountable/unrecognised/unformatted USB drive? It will not mount or format on Windows Vista or OSX Tiger. Disk Utility sees the hardware, but no partition to mount. Testdisk ...
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332 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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26 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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100 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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937 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
85 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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1answer
191 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> ...
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1answer
284 views

Verifying permissions on OSX

Last week i was having trouble installing homebrew onto a new mac running mountain lion, i tried adding command line tools for xcode and installing X11 aswell as following a load of other things i ...
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1answer
2k views

Create disk image from flash drive

I have a 16 gb flash drive that is formatted using my mac, made bootable, and an OSX installation image put on it. I'd like to keep that drive around so I can do it again in the future, but I don't ...
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691 views

Macbook Pro Hard Drive won't show up on disk startup

I have a Macbook Pro from 2007. It came with an installation CD for 10.4.8. The first problem is that it won't even recognize the installation CD even though the CD seems perfectly fine. So I used ...
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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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189 views

Frequent Mac lockups due to fsck_hfs

My Macbook Pro (10.6.8) locks up every day at noon for several minutes (and often after sleep). I put 'Activity Monitor' up front right before noon sorted by %CPU, and saw that it ran 'fsck_hfs'. ...
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OS X 10.7 and 10.8 continuously going corrupt on several machines, disk unable to repair, requires clean install

I'm managing about a dozen iMacs varying in age from 3 years to 6 months. Every iMac has an afterparty 256GB Crucial M4 SSD, which have all been installed since roughly the beginning of the year. ...
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USB Drive cannot detect in Windows 7

Have you ever plugged in a USB drive or any external device with a hard drive and wondered why you cannot see it in My Computer? I often have, I believe my USB is not broke .. because if I plugin the ...
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167 views

Failed to boot macbook from Ubuntu USB

I am trying to put Ubuntu on my aging Macbook, as my optical drive is dead, I am following this guide to do so via USB. The process seems to go fine in the terminal, but when I boot I only get a ...
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13 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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21 views

I looking for clear and concise steps to copy a regular DVD onto my Desktop then burn the copy to a blank DVD

I'm looking to insert a DVD/movie into the disk drive and copy it to my mac in a file formatted in a way that will allow me to insert a blank DVD and burn previously mentioned file onto just mentioned ...
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121 views

Remove hidden content from EMTEC 16GB flash drive

I purchased an inexpensive EMTEC 16GB USB flash drive with the intent to using it for a myriad of purposes (initially, as a start-up to install Windows via Bootcamp) and have been unable to remove the ...
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101 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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130 views

Mount Core Storage partitions on image of hard drive created with ddrescue

How do I mount a whole-disk image with an encrypted CoreStorage partition? Update: I found the answer! It was super-simple: hdiutil attach -nomount somePath.img The "nomount" flag is critical ...
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332 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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173 views

Cannot run diskutil, sudo or not

I cannot run diskutil on my brand new Retina Macbook Pro 2012. When I try to run it, (including sudo), the terminal says "command not found". I looked in usr/bin and usr/sbin and could not find ...
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363 views

Recover from botched full disk encryption using FileVault2

I decided to enable full disk encryption using FileVault2 in OSX Mountain Lion, but near the end of the encryption process, I get a message telling me that it failed, and that I should disable and ...
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191 views

System Does Not Boot From Various Bootable Recovery Disks

No matter what recovery system I have used, be it Acronis recovery disk or some other recovery disk that is intended for emergency system restoration, my system just stalls but still responds ...
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238 views

How can I create a partition for OSX without erasing other partions on the disk?

I'm trying to install OS Lion on my desktop using uniBeast. I want OSX to be on the same disk as my Windows 7 installation, but the installer's disk utility won't let me create a new partition out of ...
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288 views

tool to quickly check how many sectors there are on a external Hard drive - specifically an Ipod - preferably on windows

I've got an old ipod with bad sectors that i'm trying to format with error checking. At this point of time, i'm convinced that its checked more sectors than there are, and the check has been ACTIVELY ...