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

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External hard drive unplugged while running iTunes…Corrupted files

I have nearly 2TB of Movies and TV Shows copied to iTunes on an external hard drive. Last night, I was unplugging a cord behind my desk and I accidentally unplugged my HD. Well, when I plugged it back ...
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157 views

Figuring out bad sectors in my Macintosh HD [duplicate]

As the title suggests, what's the best way to go about doing this? I'm talking about figuring out bad sectors in the hard drive that already has OS X installed, and that I'm using right now to do ...
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1answer
3k views

How to remove the use of master boot record from an external hard drive?

I have a 1TB external hard drive and I want to slice it into different partitions. When I try to do so, I get this error: can not modify external drive because it uses master boot record Is ...
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619 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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343 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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2answers
585 views

Diagnosing Unrecognized Hard drives

I have a macbook pro 13 late 2011. My setup: i have a HDD in the main bay for my files, and a SSD in the optibay with the OS on. The other day i received the message randomly out of the blue which ...
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1answer
284 views

My internal hard disk is 0 byte and a flashing question mark

I have been striving to bring my laptop to life, however, I am seeing a flashing question mark on my MacbookPro screen. I tried disk utility and it is just showing me Media and it is 0 byte. I ran ...
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2k 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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1answer
5k views

How to pinpoint cause of disk I/O errors

I am getting (seemingly random) disk I/O errors on my bootdrive. At first I thought it was caused by a faulty hard drive, but now I've replaced it and I still get those errors. These are the steps I ...
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3answers
717 views

Airport Extreme: How to share a hard drive over the guest network?

I'm offering my Internet to somebody living in another apartment and used an Airport Express to extend my Airport Extreme signal. Since the Aiport Express only extends the "main" network, the other ...
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1answer
107 views

windows can't read my HDD installed in my dvd slot on MBP

I've swapped my dvd drive with an HDD drive on my MBP 2008 non-unibody. I can read it from MAC os but not from Windows. I did configure it to be PC compatible... Anyone knows why it's not seen as an ...
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334 views

How can I reconfigure the RAID settings on a Maxtor OneTouch III?

I have a 1TB Maxtor OneTouch III. This is the drive that comes with two 500GB disks and software to configure RAID 0 (mirroring) with 500GB of storage, or full use of both disks for 1TB of storage. ...
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228 views

Booting internally from a harddrive that was used on a different Mac

I just bought a new Mac Mini 2012 and have just replaced the drive in it with an SSD from my old MBP. Now the Mac Mini wont boot anymore, showing a stop sign when I try (after holding alt to begin ...
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1answer
606 views

SSD adapter for optical drive

I'm going to add a SSD drive to my macbook pro. I'm wondering if the optical drive adapter can have any influence on the disk speed, taking it down from a SATA III to a SATA II or I.
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1answer
61 views

How can I boot to Windows on my Mac?

I have a MacBook Pro that I installed Windows 8 on via Boot Camp. I've managed to boot to it, before, but since then I've made two new partitions on the disk, and I'm afraid it's messed things up ...
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335 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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271 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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567 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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2answers
832 views

Mid 2009 MacBook won't recognize [any] hard drive

My MacBook had been acting fine. I applied the latest update to Mountain Lion and closed the lid. When I opened the lid, it wouldn't wake from sleep (dark screen with whirring fan for ~5mins). I held ...
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204 views

Move Large, Frequent files closer to center of HDD

Is there a native/third-party utility (or native trick) to move large, frequently-used files closer to the center of the disk? I was under the impression that the OS tried to automatically optimize ...
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538 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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102 views

Transfer data to rMBP from external hard drive?

I got the new rMBP and tried importing my stuff to it via an external HD. Seems like it didn't work. And Migration Assistant didn't either. Has anyone done this successfully?
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164 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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1answer
3k views

Multiple-partition hard drive on Airport Extreme

Is there a way to have multiple partitions on a hard drive plugged into an Airport Extreme? I have a 3TB hard drive, and would like a 2TB partition for storage, time machine backups (mac formatted), ...
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3k 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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178 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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118 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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2answers
470 views

External hard drive is snapping/making weird sounds in sleeping mode

I have an external hard drive connected to macbook. When I am listening to music and my mac is not in sleeping mode everything is fine, but after 15 min. when display is turning off and music is still ...
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3answers
8k views

Can I create a bootable DiskWarrior disk?

I'm in trouble. My Mac won't boot (frozen on gray apple logo with spinning wheel), and it appears to be a disk problem. I ran disk utility from Lion's recovery disk, but it says it can't repair my ...
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161 views

What is the best way to migrate from HDD to SSD? [duplicate]

Possible Duplicate: How can I move my data to the new harddrive? I would like to purchase an SSD drive online to keep the cost low. What is the best method and software to use to transfer all ...
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520 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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2answers
3k views

Hard drive is failing, iMac is freezing?

So this is my third hard drive that I installed on my intel Mac OS X desktop (made in 2007), and I installed Western Digital Black Caviar (which is supposed to last 3 yrs, I believe). But the hard ...
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250 views

Thunderbolt hard drive alternatives [closed]

Are there hard drives like the Pegasus option with Thunderbolt available with only one or two drives for less money?
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547 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 HFS+...
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2answers
781 views

osx split external hard drive partition

I currently have a 640GB external HD that has 1 partition formatted as HSF+ Now I want to split some of the free space into a new FAT32 partition, without having to reformat the whole HD and losing ...
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3answers
63 views

Swapping HDD RAID 1 with SSD in Mac Mini

I have a Mid 2011 Mac mini with 2x 500G HDD configured as RAID 1. Recently one of the HDD died. I planned to replace the dead HDD with a 500G SSD, and let the RAID 1 rebuild Is this a viable ...
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2answers
58 views

Missing disk space after repartitioning

I tried to make a partition and then tried to undo it. Now, I don't know how to get the missing disk space back. As you can tell, I have 751.28 GB disk. Macintosh HD and Recovery HD have 557.4 GB. ...
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3answers
433 views

Use external hard drive to install applications to it

I have a 120 GB SSD on my Mac and it is almost 90% full. I have another 500 GB external hard drive and I want to install some big applications to that hard drive so it does not occupy space of SSD. ...
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269 views

Logical Volume Group 17gb “Available Space”

Can anyone help explain why there is 17 GB worth of free space on my LVG I can't seem to do anything with this space. Is there anyway to fix this? I have already reformatted the disk then cloned the ...
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3answers
29k views

USB Drive Will Not Mount, Not Listed in Disk Utilities, but Found In System Profiler

I have a Seagate FreeAgent Go drive with the optional docking station. I use it to keep files that I don't access on a regular basis and as a place to do "quick backups" of things like my Paperless ...
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3k 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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2answers
620 views

iMac HDD fan running full speed. What is wrong?

My iMac (27" Mid-2010) and the HDD fan is spinning full speed with a measured HDD temperature of 50 °C. I have removed the dust and dirt from inside and it is pretty clean. Nevertheless even when at ...
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2answers
2k views

How To Change Default Installation location on Macbook?

I have an external drive, and to install a certain app I have to put it on the external drive due to lack of room on my hard drive. The application tells me i can change the default installation path ...
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5k views

External USB3.0 4TB HDD is not recognized by Mac OS X

I've bought an external 4TB HDD. It is this this one. The problem is that my Macbook Air 11" 2013 (with Mac OS X 10.9.2) does not recognize it. The device is ok. I can use it from other computers ...
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52 views

Is it possible to encrypt a hard drive that is dual booting ubuntu using rEFInd?

I recently installed ubuntu on my macbook pro. I am using rEFInd to dual boot ubuntu. Following the installation, I tried to encrypt my Macintosh HD partition by first converting the disk to core ...
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6k views

How to recover data from unreadable hard drive?

I have an 80GB Fujitsu 2.5" hard drive that died about a day ago and had nothing backed up. Is it possible to retrieve data off of it somehow.
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255 views

500gb take up space on my HD, but don't belong to any visible file or folder

I've got a problem: 500gb take up space on my HD, but don't belong to any visible file or folder. This may have something to do with a disk image of 500gb I created and deleted some time ago. Is there ...
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2answers
5k views

How to fix mounting problem with external drive?

I have a USB external hard drive with AC adapter that works fine with an Ubuntu machine. But when I plug it into my MacBook Air it lists one partition on the finder, and does not mount the other. ...
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3k views

How safe is it (and what precautions should I take) if I want to transport my Macbook from class to class?

So, last week my hard drive died. I took it to a repair shop, and the person said the hard drive died. I asked why, and he says it just happens (even though my Macbook Pro is only 1.5 years old). ...
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12k views

MacBook Pro hard drive problems: Can it be hard drive cable?

My MacBook Pro 2009, (13inch, snow leopard), does not boot into OsX. I also have bootcamp windows, and I can boot into windows with no problem. I pressed the D key while starting and made a Apple ...