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

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2answers
160 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 ...
2
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1answer
12k 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
39 views

How does disk utility show negative disk usage for a USB Drive?

I have a 16GB (I think) USB flash drive. When mounting under OS X, the disk utility reports a capacity of 16.71GB, and available space of 18.52GB. And therefore shows that I have used -1.81GB of ...
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1answer
20 views

How to check what apps that prevent hard disk from sleeping in OS X

I am using OSX El-Capitan and i thing there is an app that prevent the harddisk from sleeping and keep it spinning. Some of the answer i have found is to check and repair the harddisk permission. I ...
1
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1answer
20 views

OSX10.11 DiskUtility v.15 bug in SDXC card access?

OSX10.11 has DiskUtility v.15 and when trying "Info", "FirstAid", or "Erase" the SDXC card in the SD access slot; these functions never finish - therefore can't Quit Diskutility - only way to stop is ...
1
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1answer
33 views

Error preparing the Time Machine backup disk

One of my backup disks has problems. I keep this disk (BU2) at another location and do a backup when I'm there. The last backup was from before the upgrade to El Capitan. At home I have another backup ...
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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 ...
1
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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
22 views

Is “DISKUTIL” available for Snow Leopard 10.6 MacBook Pro?

Is "DISKUTIL" available for Snow Leopard 10.6 MacBook Pro? Is there a way to reach the terminal of OS with a keyboard command when start is running?
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1answer
532 views

No CoreStorage logical volume groups found

I ran the following command on my Mac diskutil corestorage revert BE18BCE1-9DEA-494F-84F0-9EFC34AFB9AE And now running diskutil corestorage list Produces No CoreStorage logical volume groups ...
0
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1answer
636 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 ...
0
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1answer
90 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 ...
0
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1answer
147 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 ...
0
votes
1answer
540 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 ...
0
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1answer
518 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 ...
0
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1answer
1k 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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1answer
54 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 ...
0
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1answer
205 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 ...
0
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1answer
105 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 ...
0
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1answer
342 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> ...
0
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1answer
432 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 ...
0
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1answer
976 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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1answer
110 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 ...
2
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0answers
100 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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0answers
262 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
412 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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0answers
303 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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0answers
406 views

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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0answers
3k views

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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0answers
176 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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0answers
12 views

OSX10.11.3 How to combine disk partitions?

My MacBook Air was installed two systems, OSX and Windows, thus it has two disk partitions: Machintosh HD (40G) and BOOTCAMP (80G). I have decided to remove Windows from my MacBook. I used to the ...
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0answers
37 views

Fix an external drive not ejected properly with OSX or Ubuntu

I have an external drive of 1tb from western digital. It is formatted with NTFS. I ejected not properly from a mac and now I am not able to see the disk in finder, nautilus, disk utility or gparted. ...
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0answers
754 views

How to remove temporary OS X RESERVED partition not deleted after Boot Camp setup?

The Question: After installing Windows 8.1 on a Mac using BootCamp, an 8GB partition called OSXRESERVED is left behind. How would one safely remove it and reclaim the space for the OS X partition ...
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0answers
26 views

I can't find flash memory in Disk Utility

I installed VMWare Workstaion 12 on Windows 8.1 ,I created Mac OS X 10.8 on the VMWare ,now I pluging a USB flash drive and vmware can recognize that but I can't find that in Disk Utility on Mac OSX.I ...
0
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0answers
104 views

OSX refuses to create a partition on my 4TB external, despite free space

I have a 4TB HGST external Hard Drive. The first partition is for backing up my Windows system, which is 3.5TB, and there is ~500GB "free space" to let OSX create it's own HFS+ partition for Time ...
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0answers
32 views

SSD showing up with over a dozen *tiny* fake disks in `diskutil list`

I bought a new SSD from Other World Computing; unfortunately, now that I've got it installed, it's showing up as 14 individual disks, only one of which is actually of the advertised size: ...
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0answers
18 views

Can a Disk Image (Disk Utility) be opened by two users on separate machines at the same time?

I have created a Disk Image to place confidential information into that myself and another colleague will be working on. problem is, we have just discovered that we both can't access the disk image at ...
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0answers
211 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 ...
0
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0answers
107 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 ...
0
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0answers
474 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 ...
0
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0answers
37 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 ...
0
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0answers
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 ...
0
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0answers
40 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 ...
0
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0answers
25 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 ...
0
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0answers
1k 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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0answers
398 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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0answers
683 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 ...
0
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0answers
263 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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0answers
308 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 ...
0
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0answers
310 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 ...