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

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Recover GPT Hard Disk files on Windows

My friends 2008(ish) era macbook pro died recently but the SATA HDD is fine, I have removed it and plugged it into a Windows 7 machine. I can see in Paragon Partition Manager that the drive is a GPT ...
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5k 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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445 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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377 views

How to prevent “Incorrect block count for file” file system errors from occurring?

On our 10.7 Lion installation, 3 out of 9 drives are repeatedly suffering from Incorrect block count for file errors when running a diskutil repairVolume command. The drives are having ...
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1answer
150 views

Hot File Clustering with multiple partitions

I'm planning a performance-oriented clean install of OS X 10.6 and I was wondering if the hot file clustering feature will exists only on the boot partition or if there will be one for each partition ...
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493 views

How to select which disks are allowed to sleep?

There is an option "Put the hard disk(s) to sleep when possible" in Mac OS X's preferences: Is it possible to configure which disks Mac OS X can put into a sleepy state? For example, I want to ...
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1answer
748 views

Fusion Drive: free space on SSD

Is there a possibility to find out how much storage is free on a SSD of a Fusion Drive disk (SSD + HDD as a logical device)? The structure I use is this one here: $ diskutil list /dev/disk0 #: ...
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1answer
718 views

restore MacBook from sparse image

I recently wiped my MBP hard drive as well as installing a new SSD. I have a sparseimage backup of my old drive (created with Carbon Copy Cloner) that I want to restore onto the SSD. I've tried to ...
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1answer
55 views

HD failure - recovery possible if system can't see drive?

I've got a 2.5" SATA HD in an enclosure, plugged into a Mac Pro (trying to see if I can use Data Rescue II to recover anything). Unfortunately, my system is not seeing the disk, either in Disk ...
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6k views

Is there a way to recover a disk when File Vault is used?

I'm trying to restore a crashed hard drive. Using Softtote Data Recovery for Mac, I have recovered 8000+ files. I can't use any of them. Brainstorming with the user, he forgot that he has File Vault ...
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2answers
2k views

Is it safe to shake/move macbook air while its running?

I had this laptop and i know it's flash drive so i dont think there are moving parts, is it safe to shake it or move it without worry ? turn it upside down while its running ? how safe is this ?
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73 views

How can I recover the key of an encrypted hard-drive?

I still have access to the disc, but I lost the piece of paper with the key. Can I somehow recover it? I already had a look into Keychain Access Utility, but I couldn’t find it.
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565 views

How to take out HDD (hard drive) from a G5

G5 is totally defunct, I trying to take out the HDD for archive purpose. But realize ... there is no way for me to take out the casing. Any idea?
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2answers
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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1answer
1k views

Is it safe to reformat drive during Recovery Mode install?

I've inherited an almost brand new 13" Macbook Pro Retina. I'd like wipe the hard drive clean and start with a fresh install of Mountain Lion. I've done this a million times before... but never while ...
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1answer
5k views

How to move all of my mails to external HD and make them appear only when its connected

I have 200 GB of mails, and I would like to place them in an external hard drive, and to make the appear, in the Mail.app, only when this external HD is connected. Is this possible?
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2answers
14k views

Powerful external hard disk health checker on Mac?

Is there any powerful program in Mac to check the health status - mainly bad sectors - of an external (USB) hard disk, and to recover them?
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2answers
162 views

Why does the application in focus hang for several seconds when a drive spins up?

This has happened to me for as long as I have used Macs, I think. Occasionally, Mac OS X remembers a long-forgotten disk, sometimes external, sometimes internal, and spins it up for some reason. And ...
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1answer
758 views

how do I reset or clear the list of Volumes?

I am running into this problem when I accidentally remove a USB drive without properly ejecting it or similar and then plug it back in. When my drive is plugged back in it will apear normally, for ...
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211 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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5answers
196 views

Mac Pro 2007 crashes repeatedly

Yesterday my Mac Pro 1,1 (2007) running 10.7 started freezing up. It keeps on doing this after restart. Usually it will perform one task, but when asked to do a second, it freezes. The cursor will ...
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183 views

Should the Sudden Motion Sensor be disabled with a hybrid hard drive?

I've read that it's ok to leave the SMS on with non-stock hard drives, but I've also seen that it can crash an SSD. I have a Momentus XT with 4GB of solid state memory and 500GB of spinning platters. ...
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0answers
233 views

OS X breaks if I apply HFS compression to the whole volume. What do I need to exclude?

OS X breaks if I apply HFS compression to the whole volume. (It won't boot.) What do I need to exclude? I've been able to compress large parts of it, but then I had to restore after I compressed ...
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1answer
935 views

Can I Mount a Hard Drive in Mac Pro Tower as Read Only?

I'm trying to recover data from a failed external Fantom RAID Drive enclosure by plugging the drives into a Mac Pro tower, but I'm concerned that OS X might write to the disks and jeopardize the RAID ...
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2answers
3k views

Should I stop using my Mac while the hard disk is being cloned?

As one of my backup solutions, I use an app (SuperDuper!, if it makes any difference) to make a clone of my Mac at the same time every evening. Sometimes I am still working at that time. What I want ...
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3answers
3k views

Is it necessary to eject an external drive before sleeping? [duplicate]

I have a question similar to a previous one about ejecting before shutting down. Is it necessary or recommended practice to eject external drives before putting a Mac to sleep, whether it be via an ...
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1answer
469 views

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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2answers
2k views

Fix fusion drive partition mess from bootcamp assistant

I have a self made fusion drive on a 2009 iMac using a 256gb ssd and a 3tb hard drive. After the 10.8.3 update yesterday I tried to create a bootcamp partition but unfortunately it failed after hours. ...
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1answer
1k views

Can a Time Machine drive have several partitions, or does Time Machine need the whole HDD to itself?

Is it possible to partition and external drive an use only one of the partitions for a Time Machine backup? Or does Time Machine need its dedicated hard drive? (I've never used Time Machine before.) ...
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2answers
336 views

Inconsistent disk capacity reports in OS X - I'm missing 365GB of my 2 TB

Coincidentally I have noticed that the disk capacity reports in "About this Mac" and the Terminal when running diskutil list both report inconsistent capacities for an external hard disk drive. This ...
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1answer
335 views

Can hard-drive benchmark apps damage your hard-drive?

I want to measure the read/write speed of my hard-drive. I came accross this page recommending Blackmagic Disk Speed Test. There is a frame saying this: Note: Blackmagic Disk Speed Test puts hard ...
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1answer
2k views

Eject disk and get error message “Disk not ejected properly” when unplugging disk

I have an external USB Western Digital disk I use for Time Machine backups. I eject the disk, the disk icon disappears. I wait a few minutes, then unplug the disk. I end up with a "The disk was not ...
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45 views

RAID system with external hardrives

I have a few external ssd hardrives (My Passport, in my case). I would like to integrate them within a system that provides reliability in case of failure, by producing redundant information across ...
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1answer
4k views

Unable to adjust partition of USB drive with Mountain Lion Disk Utility

I have a 500 GB USB drive, which I once partitioned into two parts: one encrypted—Mac OS Extended (Journaled, Encrypted), and the other not—Mac OS Extended (Journaled). Now I want to change the ...
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2answers
2k 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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124 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

Disk Utility: Incorrect number of file hard links

I'm running Mountain Lion on my Mid 2009 MBP. Recently(for last few months) it's acting really slow. Simplest actions are taking forever to perform. So I verified disk using the Disk Utility and it ...
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2answers
2k views

Mac Hard Drive Testing Tools and SMART Analysis

How good is SMART (Self Monitoring Analysis and Reporting Technology) for really finding and predicting drive problems for regular hard drives and now, for SSDs. From what I understand, different ...
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1answer
2k 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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1k views

Can Macintosh HD partition be resized while a BOOTCAMP partition resides on the same physical volume?

I have a HFS-partiion, a bootcamp partition and 100GB free unpartitioned space "in between". How can I resize my Mac partition to use it? All resizing controls seem to be disabled, here's the ...
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2k views

Install Linux Mint on a dual-drive MacBook Pro with Windows and OS X

I have a Macbook Pro 13 mid-2012. It was shipped with a 500GB HDD, to which I added an additional SSD drive (128GB). After installing my SSD in a caddy, thus replacing the optical drive, I installed a ...
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1answer
3k views

How do I reinstall the OS when buying a MacBook Pro since no install media was delivered to me?

I just bought a refurbished MacBook (through a reputable retailer) and 3rd party external drive for Time Machine backups. There are no install discs and my concern is that after the warranty ends (90 ...
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4answers
5k views

What to do when my Time Machine drive is getting disk errors?

My Time Machine drive is getting disk errors. I used Disk Utility and ran "Repair Disk" on my Time Machine partition (NOT the drive) and I got the error "Incorrect number of directory hard links" ...
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1answer
330 views

What do I need to know to buy an SSD drive for a 2008 MacBook 5,1?

I'd like to buy an SSD drive for my MacBook aluminium (MacBook5,1 from 2008). What do I need to know to buy one which will work fine with it? I.e. years ago any IDE drive would fit any IDE slot, but ...
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2answers
2k 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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2k views

How can I modify an existing FAT partition without losing its data?

I have a 1tb hard drive. Long a go I split it it into two partitions. One I left as a Mac OS extended (journaled) with 990GB and one as FAT with 10GB. Now I would like to add about 100GB to the FAT ...
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89 views

Disable TimeMachine Drive in Finder

When I open a Save as dialog, Finder starts to scan my external TimeMachine drive which needs to "boot up" some seconds. This makes the dialog very unresponsive, because it waits for the drive to be ...
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458 views

What are Mac alternatives to Storage Spaces in Windows 8/Windows Server 2012?

I like the Storage Spaces feature in Windows 8/Windows Server 2012, but since I'm mostly working on Mac computers I would like to know if there are any Mac alternatives or equivalents.
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87 views

Will this hard drive work with my 2009 15 macbook pro unibody?

Western Digital WD Scorpio Black 750 GB SATA 3 GB/s 7200 RPM 16 MB Cache Internal Bulk/OEM 2.5-Inch Mobile Hard Drive i need to know if this hard drive will work with my computer? I have 8 GB of ...
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656 views

Time Machine wiped my external drive despite pressing “Don't Use”

I have an external hard drive(formatted as FAT32) that has been in use on/off for years. I even had backups on it (not using time machine). I mounted this hard drive, it was taking a while to mount. A ...