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

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Why is Intel 520 SSD slow in my Mac Pro?

I have a 2010 Mac Pro running OS 10.9 on an Intel 520 SSD. I've noticed read/write times are much slower than Intel claims. Is there anything I can do about this? Intel's claim: Sustained sequential ...
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582 views

2007 15" macbook pro disk full won't get past login screen

I was trying to help my brother fix his computer: A pop up that comes up at login that will tell you that your startup disk is full, he logs in and the screen gets stuck without loading any files. I ...
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152 views

How do I temporarily relocate my Time Machine backup files

I have a 1TB WD My Passport external hard drive that I've been using for Time Machine backups. I recently had an issue with it where I can't save to it anymore because it was corrupted. The way to fix ...
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461 views

RAID 1 array degraded, now not being recognized by OSX

I've got a pair of Seagate 3TB HDDs in a mirrored RAID 1 array using a Vantec NexStar MX two-drive enclosure. The setup has generally worked fine for the last four months, but lately I've noticed that ...
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3k views

Macintosh HD missing after failed catalog btree rebuilding

There is an I/O error in the hard disk in my MacBook Pro running Mountain Lion and as I start it up, a progress bar fills up and then it shuts down on its own. I attempted to recover the files in ...
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321 views

MacBook Pro Mid-2009 13 inch does not recognize replaced hard drive

As the title states, I recently got a used Hard Drive from another MacBook Pro and installed it into my MacBook. The problem, is the laptop will not recognize it at all. The old hard drive just goes ...
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194 views

Recover a deleted encrypted partition?

As my previous external HDD threw some disturbing SMART Warnings, I bought a new Hard Drive. It arrived earlier today, I formatted it and made some backups onto it at it has more space and I wanted to ...
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449 views

Fusion Drive not moving data back to SSD - anyone encounter this?

I'm about to buy a Mac Mini and have got the DIY Fusion Drive parts handy. I'm actually a bit on the fence about the choice of manual SSD+HDD separation with the aid of symlinks and proper Fusion ...
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772 views

Fusion Drive Setup: Possible to force the HDD to spin down as long as your reading from/writing to the SSD?

I'm considering to replace my optical drive in my MacBook Pro with an SSD. When using it as separate Volume, the advantage is that you can spin down the HDD, thus reduce noise and first and foremost, ...
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238 views

Restoring Win7 image to new bigger partition in Mac OS Mountain Lion

I had 80% of my HDD for Mac and 20% for win7... I needed more space on Win7 so I did the following: Created disk image of Windows partition, using Mac's Disk Utility Used Boot Camp Assistant to ...
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1k views

What steps can I take to recover data from a FileVault 2 encrypted boot volume that won't boot and is stuck in “converting” status?

I have a 2008 Macbook Pro running OS X 10.8 on a 500GB (upgraded from original) 1-2 year old hard drive. The drive was encrypted with FileVault2, and the system was running fine a few months ago until ...
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273 views

Why do external hard drives stop working under very specific conditions?

I have a mid 2011 MacBook Pro 15" running Lion. I have seen this behavior across 3 different external hardrives, with varying manufacturers (2x Seagate, 1 Western Digital), different file system ...
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235 views

Hard disk full error!

My Macbook Pro mid 2012 (non-retina display) keeps showing me that the startup disk is full. I have only one partition for the whole system and it is 750 GB in size. I am sure that all my files ...
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344 views

How to break away from LaCie Big Disk Extreme firmware, for its two disks to appear as two instead of one?

Question How can I reconfigure a LaCie Big Disk Extreme so that Mountain Lion will see both of its disks? Background Once, years ago, I accidentally did something bad to a LaCie device. Where ...
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403 views

“Invalid key length” - corrupt partition after power outage?

I recently lost power overnight with my computer up and running, external hard drives plugged in, and in the morning my login screen had the "Device Removal" error as if I unplugged the disk without ...
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187 views

MacBook Pro disk failure

Just a few months ago, I bought the latest 2011 MacBook Pro. Now, a few months later, I have a problem. It seems like my notebook is rejecting my hard drive (which is an SSD). How it all began: ...
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144 views

Find Time Capsule HD Specs

How can I find out the specs from my Time Capsule hard drive? It doesn't appear in Disk Utility (a mounted disk). More specifically, I'd like to know the manufacturer and model, much like the System ...
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2k views

Disk Utility Error Message - Missing EFI + MediaKit

Previously setup was with 2 partitions, one for normal use while the other had the Lion Install ESD on it, used when I installed some time ago. The other day my machine suddenly shutdown and when I ...
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168 views

Failing hard drive – Will it affect the integrity of my data?

I have a failing hard drive on my current MacBook Pro (it is having a symptom that I previously had on a failing hard drive on a MacBook – clicking drive noises). I'm backing up my hard drive quite ...
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112 views

Lion doesn't mount encrypted disks anymore

I have several encrypted disks and all of a sudden Lion isn't mounting these disks anymore (it doesn't even asks for a password when I plug the disks). I have tested the disks on another Mac and they ...
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377 views

MacBook Pro: Strange crashes

I purchased a new 13" MacBook Pro about a month ago. I'm pretty happy with it for the most part, but I've been having a few issues which I find very worrisome. I'm a computer science student, but my ...
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494 views

Restore 200mb EFI Partition/Write Support for WIN7 HFS+

So I posted earlier about recovoring an HFS+ partition on Windows. I used Testdisk with awesome success. Now I've run into another issue. The biggest issue is that I need to read AND write to my ...
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7 views

Time machine backups on a USB HDD show as “Other”

As the screenshot shows the TM backups are listed as "Other" in the storage overview. The actual backups are shown taking measly 131 MB. The disk is used exclusively for backups and has no other data ...
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24 views

How to FW upgrade and reperform a Samsung 840 Evo Basic on a Mac

i got one of these Samsung 840 Evo Basic 500GB on an iMac (used externally in a TB case - standalone, not Fusion). I know there's a firmware update out which is already available for Mac users too ...
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20 views

Experiencing slow read/write speeds with SSD since reinstall

I have a Mac Mini (2013 model) with a Samsung 840 Pro 128GB SSD and the out-of-box 1TB HDD attached, I have noticed the speeds from my SSD are not correct and are VERY slow. (Backstory....I've had ...
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21 views

Why is Time Machine only using 20% of its partition allocation

rMBP Late '13, running Mavericks, 128GB SSD. I have a 1TB drive, partitioned equally via Disk Utility to two drives. One is used by Time Machine, the other by Copy Carbon Cloner. I think my concern ...
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32 views

Toshiba 2TB External Drive Stopped Being Recognised

After a lot of searching on the internet I have been unable to find a solution to my problem. There are many people having similar problems, but no solution seems to work for me. I have a 2013 ...
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11 views

Can you add a 3rd-party hybrid disk to a 2012 Mac Mini?

The Apple Fusion drive is done predominantly through clever software, I wondered what happens if instead of trying to do a DIY Fusion with 2 drives, you just replace the standard fixed drive with a ...
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35 views

MAC OS X refuses to mount the main volume Macintosh HD, saying that there's an “Invalid content in journal”

I have a problem with my MAC. Yesterday it got stuck while it was trying to connect to a Wi-Fi network, then, since it didn't respond I decided to turn it off using the power on/off button ('). When I ...
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56 views

Disk Utility on Mavericks fails because “disk is too small”

I'm on mavericks and I am trying to delete a partition of an external hard drive. This is its schema Partition1: 50GB "MavericksBackup": Bootable backup Partition2: 187GB "Home Data": Absolutely ...
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25 views

When copying a directory from one external HDD to another Finder tells there are more files than in the whole HDD

I have this problem when trying to copy files from one external HDD to another, the thing is that in the first HDD the Disk Util app says it has 10,702,660 items and when I try to copy them the ...
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26 views

Install linux to an encrypted FV2 disk

I got a macbook pro 9,2 (non-retina 13'') with mavericks. The HDD is 1TB and I have activated full disk encryption with FileVault2. I want to split this HDD to two partitions, one 800GB that ...
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55 views

MacBook Air stuck with Apple logo and spinning circle

My MacBook Air isn't loading past the screen with the Apple logo and the spinning circle. I have done an OS X MOUNTAIN LION reset via Disk Utility and it installed, but still nothing. I have done the ...
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18 views

MacBook Pro only recognizes HDD with back cover off

I replaced my 13" Mid-2012 MBP's optical drive with an SSD the other day, but now I'm having problems with the old HDD that was in there. It booted once or twice after installation with the SSD ...
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42 views

External Hard Drive Locks Finder

Last week there was a short 10 second power outage and my external hard drive was attached to my laptop (Western Digital 750 MB drive). Message came up telling me the drive was improperly removed, I ...
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25 views

Invalid Argument when trying to write to external disk

I have an external USB 3 box on my mini (OSXS 10.9.4) that holds 4 drives (not a RAID). When I try to access either of two drives and write data to them, I get "Invalid argument" (the 3rd drive works, ...
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30 views

Spinning down hard drives that are not boot drives

If I were to put an ssd in the superdrive of an early 2009 24" iMac and used this as a boot drive while keeping the hdd in it's original place and using as a storage drive, would the storage drive ...
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131 views

Fixing a failed full disk Core Storage encryption

I selected the encrypt disk option from the Finder initially, but after several days without progress (I checked diskutil cs list and it didn't show that it was either encrypted or converting) I ...
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30 views

1 TB hard drive - with only partition showing only 800 GB capacity

I have a 1 TB hard drive, which is correctly displayed in Disk Utility, but the actual (and only) startup partition only shows 800 GB of space. There is no unallocated space either. According to the ...
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8 views

Cannot mount HDD used in Time Machine

My HDD was working perfectly fine until recently. It began when my mac tried to perform a time machine back up, but it failed saying that the back up directory could not be created. So i restarted my ...
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36 views

Gained space on reformat and restore?

I was killing a Ubuntu partition, and had to do a full reformat to repartition properly. The operation would recover 20GB of space. I then took the following steps: I made a recover disk I backed ...
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22 views

Unable to view files in hard disk after editing /etc/fstab

I have followed a tutorial to make my NTFS formatted HDD editable (now I regret doing so). I have edited fstab using these commands without knowing much what they do. sudo nano /etc/fstab LABEL=NAME ...
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48 views

ntfs-3g not working on my fresh OS X install

I have got a new Macbook Pro with Mavericks on it. I wanted to be able to write to my external HD which is using an NTFS file system. So I installed the ntfs-3g driver as usual. But unlike before, ...
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85 views

Cons of the native NTFS write support (osX)

I'm currently using the NTFS native write support this way (look at LosephJG's reply): https://discussions.apple.com/thread/5544031?start=45&tstart=0 It works great with a 1tb HDD and a 32gb ...
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89 views

Can one mount a FileVault 2 encrypted drive from Windows?

I encrypted an external drive with FileVault 2. Now it would be great if I could access it from a Windows PC. Is this outright impossible? I found no definitive answer either way.
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29 views

Restoring a backup HD on a Mac without restoring OS X Mavericks

I recently downloaded Mavericks and this made my Mac slow down a lot. So I took it to the technical service and they reinstalled 10.8.5. Now I want to restore my information on the Mac through Time ...
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27 views

Find mount points from network mounts in Disk Utility

I know lots of ways to find mount points for my mounted drives, both locally or on the network. This question is specifically about 'Disk Utility'. Disk Utility does a fine job of telling me info ...
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20 views

I need a background process which redirects a link based on whether or not an external hard drive is connected

Basically I have two iTunes libraries. One is my complete iTunes library which I store on my external hard drive. The other is a smaller version that I keep locally. I want to have a symbolic link ...
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195 views

Drive speeds … PCIe vs external thunderbolt SSD

I have a new 2014 MacBook Pro with 1TB internal PCIe SSD. Blackmagic Disk Speed Test is reporting read/write speeds of over 900MB/s. I am debating whether to swap this machine for a 512GB one (saving ...
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12 views

External drive in constant use the moment a track from it is added to iTunes

Adding tracks to my manually managed itunes library takes ages. I've noticed that the drive goes into a "constantly-in-use" mode (from the blinking led and spinning noise) the moment I drag a track ...