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

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HD fine, SATA cable fine, but MBP internal won’t mount/boot

I’m looking for some advice regarding a specific problem with a MacBook Pro mid-2009 running the latest version of El Capitan. The basics follow, but I have shared details of the troubleshooting ...
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2answers
63 views

Will it do any harm to cannibalise an old hard drive as an SSD enclosure?

I have an old G-Tech Mini portable hard drive (FW800, bus-powered) that I don't need any more, so as an experiment I took the actual hard drive out and replaced it with a 512GB Crucial M4 SSD. I would ...
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2answers
97 views

Unable to copy OSX Installer from external drive to Mac

As usual I wanted to prepare bootable USB with OSX. Some time ago I've made a copy of my Mavericks, Yosemite and El Capitan to external drive. I wanted simply to drag & drop El Capitan to prepare ...
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1answer
10 views

Running Application From External Hardrive on a mac

I have copied my application to external my hard drive but when I run it it copies the application to the application folder on the mac and then runs.
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1answer
29 views

MacBook hard drive formatting

I removed Filevault to resize the main partition. I had about 320 GB of data on my hard drive so I tried to reduce this partition. The partition wouldn't budge so I closed Disk Utility and shut down ...
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1answer
96 views

Macbook Pro late 2011 version won´t boot up

Hi guys I have been searching the forum and haven´t seen a solution to my problem therefore i will start by explaining what happened. Last night all of a sudden my mac froze, the mouse would move but ...
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4answers
69 views

How can I find what is using the rest of my drive?

I am using a Macbook air. 64GB. My user directory has used 20.47GB Disk Utility shows 'Other' is 41.33GB and I only have 2.9GB free. What tools or command line commands can I use to find out what ...
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1answer
38 views

I had 250 GB free on my hard drive a week ago, I have done almost nothing and now it's 80GB?

I have only browsed the internet, and added a few files around 2GB. When I look in / (with hidden files) and take all the sizes together it just becomes about 730, but I have a 960GB hard drive with ...
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0answers
37 views

Is it possible to use diskutil to manipulate the read/write buffer of the SSD portion of the fusion drive?

Has anyone been able to use diskutil to manipulate the Core Storage LVM into increasing the size of the read/write buffer of the SSD? Currently the Fusion Drive keeps 4 GB free for new reads/writes. ...
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1answer
38 views

My MacBook gets stuck but still has 44 GB of storage left

My MacBook has 125 GB storage space (other 125 GB is for Windows). It still has more than 44 GB available but it gets stuck every two hours. I have tried all the methods I can find and have deleted ...
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1answer
2k views

OSX El Capitan / Not Recognizing USB Hard Drive

I updated to OSX El Capitan a few weeks ago, and ever since I did so, my computer is having some issues with my Seagate USB 3.0 hard drive. In terminal, when I use the disk utility, the drive shows ...
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0answers
499 views

Finder reports error code -36 when copying some files

I have a 4.6GB file on my hard drive. Today when I tried to copy it to another machine through network, I got the following error message from Finder halfway through the copy: The Finder can't ...
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0answers
60 views

My MacBook 2012 has sleep/wake problems with SSDs as internal drive

Whenever I have an SSD (crucial mx100 or samsung 850) as my internal hard drive, my macbook has problems with sleep/wake. If I unplug my macbook and let it sleep, the hard drive does not wake up. It ...
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0answers
52 views

Can I change the filesystem of a drive from ext4 to hfs+ without formatting?

So my one drive is ext4 formatted but I would like to read and write to it from OS X 10.9 The only thing I can do is use osxfuse 2.8.2 to make the drive read only at the moment.
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0answers
71 views

Messed up 3TB Fusion Drive Partitions (on iMac Late 2012)

I found one of the threads around here where you helped some guy with getting the Fusion drive back together after a failed attempt of using the Bootcamp on a Mac machine. Messed up 1TB Fusion Drive ...
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0answers
59 views

Encrypted hard-drive I can't reformat in Disk Utility

I have an external HDD I wish to reform (erase) so I can put inside my MBP and make a DIY fusion drive. I've done the fusion drive before but Apple made me remove it for a logic board replacement. ...
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1answer
11 views

Transfer capacity between two partitions

I have created two partitions: System 850GB Data 150GB what I actually want is: System 200GB Data 800GB ...however, disk utility doesn't let me either merge these two partitions or transfer ...
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1answer
58 views

Did something wrong with partitioning my SSD

I tried to make a partition for Windows on my Mac by using Apple's Disk Utility, because bootcamp already showed me that it didn't work for some reason. But now I'm stuck with a 70 gb hard disk, and ...
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2answers
431 views

Drive does not stay mounted

I created an encrypted RAID 0 disk following Why doesn't FileVault work on a RAID volume? on a WD My Passport Pro $ diskutil cs createLVG TimeMachineLVG disk5 Started CoreStorage operation ...
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0answers
722 views

Apple Hardware Test result: 4HDD/11/40000000: SATA(0,0). But repaired Disk and Permissions w/o a problem

Ran an Apple Hardware Test. Result: 4HDD/11/40000000: SATA(0,0). Then repaired Disk and Permissions. Result: Volume appears to be okay. But during use, sometimes it freezes randomly and my MBP ...
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1answer
95 views

EFI automounts on startup

After upgrading to the newest El Capitan from 10.10. to 10.11.1 - I guess - the normally invisible EFI partition appears on the desktop as a regular volume on different machines, if I choose to show ...
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1answer
61 views

How to exclude everything from TimeMachine backup except one folder

TimeMachine backs up all my mac and also if I have external hard drives will back them up too. My goal is to add some general exclusion list that basically stops it from backup my mac and ONLY want ...
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1answer
52 views

Time Machine offers to erase disk data (format), will it delete all my partitions?

So, I'm trying to perform my Macbook backup on my 3TB drive. This drive is currently has a GPT table with 4 partitions: BackupMain BackupKubuntu BackupWindows BackupMac Before BackupMain, there ...
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0answers
45 views

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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0answers
120 views

Fix hard disk not detected after force eject

I got an HDD on my Mid 2012 Macbook Pro 13 inch. I decided to upgrade to SSD and I want a clean install of El Capitan. After the SSD ugprade and OS installation I connect my old HDD as an external ...
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0answers
520 views

How can I eject my external Time Machine hard disk attached to a MacBook Pro?

I used the external hard disk with Time Machine for the first time. After that when I tried to eject the disk, I got a message saying that it can't be ejected because it is being used by some ...
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0answers
25 views

Installed SSD in Macbook Pro 2011 and now the DVD player won't read disks

I just installed a SSD (Crucial MX200 2.5" 500 GB) into my late 2011 Macbook Pro (running 10.8.5). The DVD player will accept a DVD (which works fine on another computer so it's not the DVD), and the ...
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1answer
28 views

Corrupt Time Machine

I have an external disk partitioned in three /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *1.0 TB ...
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1answer
38 views

Convert case-sensitive HDD to journaled insensitive?

Like everyone, I've search everywhere in the web about getting my brother's HDD converted to case-sensitive journaled. I have a back up HDD that I can transfer to, I have no idea why iPartition is ...
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3answers
4k views

Remove disk image from the disk list

In Disk Utility I see two disk images (Flash Updates) But I cannot find where the image file could be. On the console with diskutil I see /dev/disk2 (disk image): #: TYPE ...
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1answer
5k views

How do I save iCloud photos to external hard drive?

Photos on my iPad are backed up on iCloud, but as my iCloud storage is full I want to back up my iCloud photos to an external hard drive. How do I do this on my Windows desktop PC? I do not have a ...
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4answers
6k views

How can I get my 3rd party SSD to boot El Capitan?

I have a Mid 2012 13 inch MacBook Pro that's been running successfully with a hybrid drive (3rd party) for the last few years. Recently, the operating system crashed and the hard drive is no longer ...
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2answers
202 views

External hdd: Difference “Get Info” Available space and "About This Mac - Storage

OS X El Capitan. I have seen this thread, and it explains a bit (different reporting units), but there is an additional substantial discrepancy in the free HDD space of an external HD reported: Get ...
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2answers
34 views

I have an SSD installed on a mac I do not use, how do I use it on another desktop?

Do I have to format an SSD from OS X in order to re-use it on an Windows desktop? Or Is there no limitations to where to format the drive?
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3answers
177 views

MBP Late 2011 15" Windows 10 Installation Problems

Just two days ago, the machine had a Windows 8 partition on it, but it was full of malware slowing it down and hurting it. I backed up all important files and formatted the drive, so to install ...
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0answers
34 views

Partition problems - No LVG detected in Terminal after BootCamp Erase through Disk Utility (I know, I messed up)

I'm very stuck trying to get my system to recognize a full HDD and run Yosemite cleanly after a poorly-executed BootCamp removal. Here's the steps in the process so far: I erased a Windows Partition ...
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2answers
121 views

Replacing hard drive in Macbook late 2009 what do I do about osx?

I'm replacing the hard drive in my 2009 macbook (13" unibody). How do I go about installing OSX and can I go straight to Yosemite or do I have to install Mavericks and then upgrade? It's my first ...
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1answer
48 views

Terminal command ls/cd not finding any files on external harddrive

I'm having a bit of trouble with my external hdd and terminal. I've been able to access files on it via terminal in the past, but since I upgraded to El Capitan I can't seem to find anything on my ...
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3answers
205 views

Internal vs. External Storage for a new Macbook

I want to get a new MacBook Pro, and am confused by the storage options. The Apple website offers 2 different options for storage: Preinstalled internal flash storage (256, 512, or 1 TB) Thunderbolt ...
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5answers
276 views

Move HDD from a MacBook Pro (Mid 2012) model to another MacBook Pro (Mid 2012) model

I have a HDD from MacBook Pro (Mid 2012) model: OS: Yosemite; The content in the HDD is important to me. I want to know If I can buy a MacBook Pro of the same model, Mid 2012, and simply hook the HDD ...
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3answers
2k views

How to install Windows 10 on external SSD that currently runs OS X?

I made the mistake of purchasing a MBP w/ only 128 GB of storage. When I ran out of space on the internal drive, I purchased a 512 GB external SSD, transferred all the data over to the SSD, and now ...
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0answers
30 views

new Hd and shuts down iMac 2010 mid 27 inch issues

HD died, read tutorial, installed new Hd connector position was not closely monitored on restart fan was loud had time machine back up (old by 2 months ..i know...) downloaded a fan control app (?) ...
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0answers
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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2answers
169 views

Cloning Macbook Pro HD to external HD and still using it

I am still on Mavericks and want to upgrade OS X, but since I use a lot of audio apps, plugins etc that would break - I am looking for a way to clone my entire Macbook Pro 1TB SSD as it is right now ...
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2answers
33 views

Swapping internal hard drives

I have a mid-2012 MacBook Pro into which I had installed an OWC data doubler SSD (removing the optical drive). I originally placed the SSD in the original HDD bay and moved the HDD to the data ...
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1answer
630 views

Reformat exFat with specific Device Block Size and Cluster Size

I have an 512 GB SSD on my MacBook Retina with one of the volumes disks0s6 formatted with exFat to use it on both Mac and Windows. diskutil info disk0s6: Device Identifier: disk0s6 ...
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1answer
175 views

Something is constantly eating my hard disk space [duplicate]

Something is constantly eating my hard disk space. This pattern happens very often: I free some space by deleting stuff (5-8 GB) In about half an hour I have 0 (zero) free space I have not ...
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2answers
51 views

I need administrator password for file management on external hard drive

So I have an external hard drive, my passport, that used to be a Time Machine, but now I use for basic file storage. Whenever I try to add a folder, or manage files, it asks for an administrator ...
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0answers
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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0answers
63 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 ...