A hard drive is a device for permanent or long-term storage in computers.

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My SSD just disappeared

I have a mac mini, with two ssd, both internal. They worked fine for over a year. The secondary (not system) ssd has just disappeared. While I was copying a folder on it, a popup appeared, saying it ...
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26 views

Macbook booting up in Recovery Partition by default after dual-SSD/HDD

I've installed a SSD, and cloned my earlier HDD OS X to it using Carbon Copy Cloner. Now, whenever I boot-up, the MBP by default boots to recovery partition. How do I correct this? How do I ensure it ...
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32 views

How can I issue a S.M.A.R.T. Enhanced Security Erase command to a HDD?

I have multiple hard drives that I need to erase before selling and some before going in the trash due to bad sectors. I'm not fond of software level data erasing (Disk Utility, DBAN, DD, etc) as it ...
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61 views

Time Machine backup not progressing

I'm experiencing issues running backup on an external encrypted USB 3.0 HDD. The backup starts and stop proceeding random. I'd tried to wait many hours without any progress. For example in these ...
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26 views

I can't transfer data from my hard drive (FAT32) to my laptop

I have been using this hard drive for a while now and recently I haven't been able to transfer files from the hard drive. I have stored close to 500 GB of data and now that I am trying to move some of ...
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12 views

Recovering a partition on a flash disk

The other day my 128gb flash stick refused to be recognised when I plugged it in, giving me a 'failed to initialize' error with options to format it or eject. This was particularly frustrating because ...
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170 views

Hard Drive: I can see it in /Volumes, but it does not show up in Finder

I'm connecting my external Hard Drive on my Mac. It's a NTFS drive. It used to show up normally on Finder's sidebar and Desktop as well, but it doesn't anymore. But it does show up in /Volumes ...
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19 views

How to fix this hard disk on a virtual machine?

I have been using OSX on a virtual machine for some time, for developing purposes. From today, I'm starting to have hard disk issues. The Disk Utility Tool says that the hard disk has 107.37 GB, but I ...
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55 views

Lost a Fusion drive boot disk

i can see my Fusion Drive disks (ssd+hdd) in Terminal: But i lost it in the boot and cant boot MAC OS. (please see album with photos on http://imgur.com/a/N5zY2 ) I cant repair my system, when i ...
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257 views

Missing SSD space on MBPr 13, El Capitan

I have the following problem: I had two partitions, one was ~190 GB, and another ~60GB. Then I wanted to delete the second partition and resize the first one. The deletion went well (I suppose), but I ...
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27 views

High IO latency in games when loading sounds

I recognized the behaviour of games hanging/freezing for fractions of a second (or up to a second) everytime a sound is being requested from the disk. At least that is my conclusion. One title where ...
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1k views

How do I fix “Your Disk Could Not Be Partitioned” isssue with BootCamp Assistant?

I'm Alex and I'm attempting to install Windows 10 on my iMac 27" (2012) with 3TB+128GB Fusion Drive, but during install procedure I get the same error "Your Disk Could Not Be Partitioned" without any ...
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70 views

Mac slow because of ssd

I bought used macbook pro 2012. The hdd was already changed to 120GB SSD (SPCC Solid State Disk, S9FM01.8). It was working fine on Yosemite until I wiped the disk and did an internet recovery. ...
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94 views

Boot stuck at Prohibitory screen

I'm using Macbook Pro 2012 running Mac OS X 10.10.3 and earlier today, I was trying to install Linux on a USB drive through Terminal. I first converted the format with this: hdiutil convert -format ...
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500 views

kernel_task filling up disk

Something weird just happened. I got a warning that my disk was running out of space. I knew that it had like 15GB free before and wondered where all the free space went. I checked Activity Monitor ...
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18 views

Cannot reclaim partition as free space

I'm trying to reclaim some free space for my main SSD but I'm having problem, the disk utility won't let me expand. Btw I checked for core storage and it said there wasn't any. I can't use ...
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226 views

Time Machine drive doesn't mount; exit code 8

My Time Machine backup disk is borked. Normally, I'd just reformat and re-run the backup, but that disk also has a folder of pictures separate from the Time Machine files that I need to recover. The ...
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230 views

How can i delete a partition in Terminal when I can't simply combine because 'The given partitions are not on the same whole disk'?

Before I partitioned my HD, the only one I had was "Macintosh HD". The partition created one called "Macintosh HD2" I used terminal to erase "Macintosh HD2" somehow, but it returned as "Untitled." ...
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40 views

Get Automator to remount a partition for an attached hdd

I've got a setup where we backup our server every day to an external thunderbolt drive, and we alternate between two different drives. I've got an Automator script that ejects the drive every week ...
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1k views

Time Machine backup external disk not mounting anymore

I just installed Security Update 2015-002 (Version 1.0) on my MacBook. The latter has a 1.0TB internal hard drive, backed up onto a 2.0TB external USB2.0 3.5 inches hard drive. However, after ...
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62 views

Is enabling rw in /etc/fstab for an NTFS volume risky?

I've followed this tutorial: http://computers.tutsplus.com/tutorials/quick-tip-how-to-write-to-ntfs-drives-in-os-x-mavericks--cms-21434 I'm not familiar with Mac OS X's NTFS support, having used ...
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386 views

Is there a way to manually repair a CoreStorage volume?

I was playing around with CoreStorage on a test disk and used the undocumented commands cs addDisk and cs removeDisk. The addDisk command worked just fine and was able to expand a logical volume ...
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1k views

Why can I not create a directory on my external hard-drive?

When I try to make a new directory on my external hard-drive I get a message saying that it is a "Read-only file system" LU06296APPLE:~ fortinok$ mkdir /Volumes/Seagate\ Backup\ Plus\ ...
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43 views

How can I set up the internal HDD on my iMac to be able to connect to it from my laptop at college?

To better explain my question and what I am trying to do... my iMac is in my room in my parents house, and I want to be able to connect to my iMac's hard drive from about 300 miles away at college on ...
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903 views

Unable to partition hard drive with Yosemite (Disk Utility hangs)

I have a 2007 model Macbook Pro running Yosemite 10.10.1. My father recently upgraded my hard drive for me from the stock 320GB hdd to a hybrid 500GB hdd. He's not really a Mac user and said there ...
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76 views

WD Drive Cannot be Repaired but program still running

I have an external hard drive that I use to run my iTunes, iPhoto library and store various other documents. Recently, it stopped connecting to my MacBook Pro. I can only see my WD Ultra external ...
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66 views

I cannot open a Partition of a Harddrive when Shared

I've partitioned 0.75TB of external harddrive space for photo backups, which is shared on the network with a PC. However when shared I am unable to open the folder in Finder, as it will hang for 2 ...
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58 views

Macbook Pro 13" HDD cables going bad

I have a user at my institution who has had 4 HDD cables go bad since May, 3 times in her laptop and once in a loaner we provided. Both are the same model, Macbook Pro 13" unibody. I'm starting to ...
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182 views

Finder Problem - USB drive opening in separate window for every folder

Whenever I connect my USB drive or insert a disc and view the contents every folder is opened in a separate window, how do I prevent this? 'Open folders in tabs instead of new windows' in the Finder ...
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296 views

Transferring iPhoto to iCloud drive

I have been running out of hard drive space on my older MacBook Air. I decided to free up the 91gb of space that is my iPhoto. (I believe) I moved iPhoto in relatively easy fashion. I drug it from ...
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200 views

Having trouble mounting a 12TB Raid on Ubuntu Server

I am running a Ubuntu server on my off of my 2008 MacPro, it runs great and works really well except I am not able to run any raid setups directly on it. I have a large library that needs to be ...
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174 views

Yosemite: iCloud Drive offline

I'm wondering if it is possible to use iCloud Drive as a 'mounted drive'. As of now, I have a photo's collection of around 50GB. I'm keeping the files on an external HDD as it hogs my Macbooks' SSD. ...
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434 views

You can only install this software on the disk that is running os x

I have 2 disks in my Mac - a new SSD which is my boot drive, and the original disk which came with the mac, which still has OSX installed on it (I haven't figured out what to use this drive for yet). ...
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77 views

Upgrade Freenas hard drive

I have been using Freenas with a 320 gb hard drive and would like to upgrade to 4tb. How can I upgrade my Hard Drive? I only have one hard drive. I want to move everything from the 320 gb drive to ...
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94 views

SSD Disk Utility & Install Failure

I've been running a SanDisk 256GB SSD for about a year. A week ago my system locked up and stopped being able to boot from the SSD. Booted from 10.9 USB installer, and went to disk utility, located ...
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111 views

How to automount UDF partition with strange partition ID

I have two partitions on my usb hdd: #: id cyl hd sec - cyl hd sec [ start - size] ------------------------------------------------------------------------ 1: AF 1023 254 63 - 1023 ...
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495 views

MacBook won't boot from internal SSD

I got a 2011 MacBook Pro and had a Samsung 840 Pro installed running Mountain Lion, then Mavericks for about a year without any problems. Without any apparent reason the MBP just wouldn't boot from ...
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215 views

/dev/disk0 disappears

On my Macbook Pro mid-2014 (have had it for only a week) I am having an issue where the primary hard drive (at /dev/disk0) just disappears from the system, thus crashing. The only reason I know that ...
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334 views

Getting rid of “The disk you inserted was not readable by this computer” message at startup

I have a couple of disks in Windows software mirroring RAID in my system, and when OS X (Mountain Lion) loads, the same message pops up (twice) each time: The disk you inserted was not readable by ...
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128 views

Why Can't I Make a Macally G-S350SUAB2 Boot Family's iMac?

I can't seem to be able to get the Macally G-S350SUAB2 enclosure that my dad loaned me for development use to boot a copy of OS X 10.9.4 Mavericks which I installed using my dad's early- or late-2011 ...
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94 views

Loading Windows 7 on external drive for gaming

I'm attempting to load Windows 7 onto an external hard drive in order to boot from the hard drive whenever I play games. I originally split my internal drive to make a Mac OS side and a Windows side, ...
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261 views

External USB 3.0 Seagate HDD No Longer Mounting

Out of nowhere my 1 TB Seagate FA GoFlex won't mount my Mac formatted partition (the only partition). I have run repair disk on the drive and on the partition and find no errors. I still get an ...
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82 views

iMac hard disk partially erased - now stuck

My iMac, about four years old, started playing up badly - went from being very slow to not doing anything (grey screen at start up). I tried resetting PRam without success, and then started up in safe ...
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281 views

Error while erasing my system disk in recovery mode

My macBook Air failed to start. I have the grey screen and when the progress bar is at 100% it shutdown. I tried 4-5 times with same result. I try in recovery mode pressing Alt key during boot. I ...
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462 views

Disk Utility Crashed whilst creating a Partition and I'm now missing hard drive space

Disk Utility Crashed whilst creating a Partition, and I now have ~100GB missing, which was the amount I had allocated to the new partition. The new partition didn't get created, and I now have 100GB ...
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127 views

Can a mac do a bitwise copy of a USB disk with proprietary disk format?

I have a USB disk with a propietary format that I want to bitwise clone to a new identical drive. I have CCC but the disk doesn't show up in Finder. It does appear in Disk Utility. I tried ...
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64 views

What to do if repairing one disk made the other unrecognized?

Originally I had two drives, an HDD and an SSD (my boot drive). The HDD had a 100gb partition on it that used to have windows installed on it, but that partition got locked and became unusable. When I ...
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248 views

Raid two external hard-drives with read/write support on Windows & OS X

I have a USB 3 HDD enclosure that currently has two 1TB drives in it. I am looking at buying another external USB 3 HDD drive (not an enclosure). I am currently running the external enclosure with the ...
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165 views

Does free disk space actually help mac performance?

Anyone will tell you that freeing disk space will make your mac faster - specially noticeable if your disk is almost full. I don't know if that's true. Is it? And why, exactly? I just don't see how ...
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111 views

Hard Drive Scraping Noise and the Flashing Inquisitive Folder

Hey I'm having the flashing question mark folder issue. My hard drive is also making this noise like tschhh, tschhh, tschhh, tschhh. Holding option does nothing, it just makes it load to a grey ...