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

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How to keep data from an old Mac to restore later

I have a new Mac, and I want to selectively move files over from an old Mac. I've sold the old Mac and need to ship it today, so what I really want to do is simply take a complete copy of the HD in ...
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50 views

Replacing DVD with SSD - What is the best way to test SSD reliability?

There have been some reports of specific SSD versions/speeds not working appropriately in specific MacBooks. Depending for example on SATA chipset etc. (e.g. saga-3 drives in old early 2011 MBP?). ...
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8k views

Will 'Internet Recovery' necessarily erase my hard drive?

My Mac is booting to the 'question mark' folder. I option-booted to 'Internet Recovery'. Before I proceed, I would like to know: Will 'Internet Recovery' necessarily erase my hard drive? Can anyone ...
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88 views

RAID 0 and 1 combo?

If I understand correctly, RAID 1 is two drive that mirror each other, and if one fails, it can be replaced and some hours later, it's a mirror of the good drive. Raid 0 combines 2 drives in a way ...
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104 views

Hard drive backup issue in Mavericks

My hard drive had some bad sectors recently, so I backed up, re-formatted, and clean installed Mavericks. Everything seemed to work fine until couple days ago when I tried to look at some photos I ...
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2k views

How do I keep the Recovery HD and EFI partitions from automatically mounting on my MacBook Air?

I've set Finder preferences on my MacBook Air running OS X 10.9.1 to show everything on my desktop: I've noticed that storage partitions called Recovery HD and EFI appear there: What are they? ...
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11k views

macbook doesn't recognize internal HDD, only when connected via USB

yesterday something weird happened. After my 13' macbook pro ( early 2011 ) was running all night while playing music, in the morning I just closed it and went home from my friends house. When I got ...
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47 views

On external drives

When I shop for third-party external hard drives I'm struck by how much more expensive the drives that are advertised "for Mac" are, when compared to those without such qualification. My question is: ...
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728 views

Time Machine is Frozen

I am running Mac 10.8.5 on a 2008 MacBook Pro, I have my time machine save to an external hard drive. Recently I have been unable to back up my machine because it gets hung up on 'Preparing Back Up' I ...
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3answers
202 views

Diagnosing what's wrong with “vintage” iMac

I have a "vintage" iMac with the following spec: I've been told by an official Apple store that they won't touch it and neither will any Apple resellers so it's left me with two options: Buy a ...
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2k views

Why do I get back more disk space when I restart my Macbook on Mountain Lion 10.8.3?

I frequently run low on disk space on my laptop. When I'm down to my last gig or so on my 256MB SSD (as reported by iStat Menu), I'll get various warnings from the OS and apps saying that I'm running ...
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139 views

Monitor Console.app for a string and notify when found

Is it possible to monitor all messages in Console.app for a string and then notify the user when this string occurs? I have the problem that I'm getting disk I/O errors and I suspect that it's not a ...
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8k views

How to upgrade HDD to SSD and replace the optical drive with HDD?

I am trying to understand the process of switching out my HDD for an SSD and then replacing my optical drive with the same HDD just removed in a late 2011 Macbook Pro 15.4". Is there any benefit to ...
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1answer
296 views

Open an encrypted HDD/USB on Leopard?

Is it possible to access an external HDD or USB drive encrypted on Lion, through a Mac running Leopard? In other words, is FileVault 2 encryption on volumes/partitions backwards compatible? (It ...
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5k views

MacBook Mac OS X Install DVD not loading on new hard drive

I have a MacBook Pro 13 late 2008 for which I just replaced the HD with a WD Blue notebook 500GB, 5400rpm, model WDBABC5000ANC-NRSN. After replacing the HD, powered up the MBP, the screen displayed a ...
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913 views

External hard drive frequently ejects itself when using Aperture

I have a brand new external hard drive which frequently ejects itself on a regular basis (every ~20 minutes or so), seemingly only when I have Aperture open (my Aperture library is located on the ...
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623 views

Is there anything like NVELO Dataplex (hybrid SSD/HDD software) for OS X?

I'm interested in upgrading my old MacBook to using an SSD and moving the data drive to where the DVD drive is using an optibay. Often SSDs come with a licence for NVELO Dataplex software (which is ...
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3k views

Unable to unmount drive!

Somehow my harddrive seems to fail, I am not able to startup anymore. When I started in verbose mode, I noticed that the harddrive return I/O Errors and the B-Node-Tree seems to be corrupted. I was ...
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1k views

My USB Devices seemingly disconnect at random intervals

I have a Early 2008 24" iMac. On my USB ports, I have my wired keyboard, my external Seagate HD (for Time Machine), and I have a joystick. For quite some time, it seems like all of my USB devices ...
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814 views

Compatible SSD for Macbook Pro (replace HDD)?

Any special compatibility concerns when replacing the HDD on a MBP with an SSD? I am running Parallels with XP Pro and Ubuntu and have been disk bound for some time. Not too concerned about size, ...
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241 views

Reinstalling software on a brand new (non-formatted) drive - MacBook

My sister gave me her old Macbook that had a bad hard drive. I replaced it with a non-Apple drive and tried to install her software on it, but had no luck at all. I did successfully load/run Ubuntu, ...
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1k views

Using the Seagate FreeAgent Desk for Mac on PCs

Is there any way I can use the Seagate free agent Desk Hard Disk for Mac on a PC? Notes: When this disk is plugged into a PC(running Linux, say) the disk is recognized as a separate drive, but we ...
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777 views

Why do external hard drives run so hot while mounted and idle on a Macbook Pro?

When my external drives are mounted and idle on a Macbook Pro, they run hot. Why? I do not have the same experience with NTFS volumes on my Windows box, where's the difference in idle disk usage? ...
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2k views

Is it possible to Move a bootcamp partition from one drive to another?

When I got a new MacPro last year I formatted one of the additional (i.e. non-boot) drives with Bootcamp and installed Win 7 x64 on it. This set up has been working well these last 12+ months but I ...
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5k views

iMac refuses to boot, Disk Utility always says there are drive errors it can't repair — what to do?

This is a follow on to the question I asked about replacing the hard drive in my iMac. The restore from TimeMachine finished and the machine still won't boot. Just the white screen, Apple logo and ...
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91 views

Hard drive no longer accessible

This is a 4 TB hard drive formatted in Mac's Disk Utility as a single non bootable Exfat partition with the drive letter G. It worked fine before I decided to make a clone drive of my C bootable ...
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59 views

MacBook Pro 2010 all of a sudden slow

So literally out of the blue, my MB Pro is giving me the rainbow for minutes at time for 99% of the things I try to do. I maxed out the memory to 8GB last year, and that made a huge improvement, but ...
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148 views

Mac terminal stop hard drive from spinning

Can I stop hard disk drives from spinning using Terminal? The reason why I want to know is because I have my Mac to backup at midnight however I do not want my HDD to be spinning all the time. I ...
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44 views

What takes so much space in my external disk?

My external disk (LaCie) is full! When I look at the individual folders within my disk, I see that only little space is occupied by visible documents. So I displayed the hidden files and found small ...
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1answer
41 views

How to reformat a time machine drive to use on a PC

My sister used to be a mac user and recently switched to a PC. She has her mac stuff backed up on two hard drives, one is formatted as a time machine. We've transferred all her important files to the ...
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655 views

How Do I Partition A Raid 0 Using Disk Utility?

I have just purchased a WD My Passport Pro. It comes in a striped RAID 0 configuration comprising of two 2TB drives. I want to partition the drive into 3: Photoshop Cache Lightroom Catalogue Video ...
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826 views

Upgrading to SSD on 2010 MBP

I have a mid-2010 MacBook Pro, which I want to upgrade with an SSD in the Optical Drive slot and create a Fusion Drive (using the Terminal diskutil command in Recovery Mode) and then re-install OS X ...
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56 views

Macbook pro mid-2010- water damage - but still plays chime?

Hey guys it's been a week since my macbook pro had water leak into it, Im pretty sure something is fried :( But now when I try to boot it up I hear the startup chime, what does this mean? Should I buy ...
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71 views

Need solution for RAID from old Mac

I have an old Hackintosh which I no longer use, except as a server to access 2 RAIDs made of 6 disks. The machine is too big, uses too much power, makes too much noise, and generates too much heat to ...
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1k views

Something's eating my disc space - Mac OS X [duplicate]

So something's swallowing about 800gb of disk space on my mac. I've ran Disk Inventory X and Omni Sweeper, and both show that my main OS drive only houses 30 GB worth of data. 10GB of that is Home ...
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1k views

Macbook Air intermittently can't find startup disk

About six months ago, my Macbook Air started having a strange issue where it would often not be able to find the startup disk, giving me the flashing question mark. Initially, I was convinced the hard ...
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493 views

Time Machine Backup accidentally unplugged, can't repair

I accidentally removed my Time Machine backup without ejecting. It didn't show up in Finder after I plugged it back in and Disk Utility cannot repair it. Disk Utility recommends reformatting the disk, ...
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1answer
53 views

Incorrect amount of free space on 2009 Macbook

Recently, I've been noticing that my 2009 Macbook's storage has been plummeting. Despite cleaning my computer up, nothing seems to be working. I went to the apple store and we ran tests (which I ...
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734 views

Is it safe to delete heapdump.hprof.old?

I'm on a mac book air running OS X 10.9.2. I want to free up space. I see that a file called headdump.hprof.old is occupying a lot of space. Is it safe to delete it? What does it do?
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38 views

Size of my Cd-Rom (SATA)

I have a macbookPro 15'' mid 2009 and I want know which size is my cd-rom (SATA)because I have to buy this "component" where can I find this information ? My Cd-Rom is 9,5mm - SATA/SATA ?
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1k views

How can I wipe a disk from a Mac with firmware password set?

I'm in a somewhat odd situation: I need to wipe the disk of a MBP, but I can't boot into Recovery Mode/from a CD/etc. as there is a firmware password set. Is there a way to wipe the disk from within ...
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87 views

Time Machine: Mobile incremental Backup

Imagine I do backups using Time Machine at home just like everybody else. But as I travel often and of course also work on the road I also need to have a mobile backup solution. I thought about the ...
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22 views

Log for the root directory of an external HDD

I really doubt that this would be possible, but is there any chance that OS X 10.7.5 logs the root directory contents of an external HDD that was plugged in through a USB drive a week ago? My ...
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72 views

Can OS X Combine Physical Disks

I have OSX Server 10.5.8 installed on a drive and I would like to combine 2 USB drives together to act as one drive. Is that possible?
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168 views

Set a Volume's permissions to group write for all files and folders

To me this seems like it should be easy but I'm having a hard time finding a very good answer that seems definitive to me. I have a I have a hard drive mounted that my wife and I share (internal ...
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649 views

Get the UUID from a mostly dead hard drive?

I have a mostly dead internal hard drive in my '07 iMac. I've switched the machine over to an external FW800 drive but every now and then, on reboot, the mostly dead internal drive will mount on boot ...
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2k views

Cant copy because file is too large for format

I too was getting the error that I could not copy some files as there were over 4 GB. I was attempting to transfer .avi files.I reformatted the the thumb drive to Mac OS Extended(journaled) however ...
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How to Erase Hard Drive Mac System (this partition can't be modified/unmount)?

I want to erase a disk (Mac system) to resize OS X Mountain Lion to the max volume but I couldn't resize it nor unmount the other disk.
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464 views

Transfer data from one iMac to another

I have an iMac that sounds as though the hard drive is about to fail. It has the following spec: I then have a newer iMac with the following spec: Is there a way I can transfer all the data from ...
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565 views

RAID 1 with a Mac - how to avoid formatting one of the drives

I have an iMac with an external 2TB HDD. I recently bought a second 2TB HDD in order to build a RAID 1 (mirrored) with the two drives. The problem is that Disk Utility forces me to create a new RAID ...