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

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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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2answers
1k views

How to recover deleted files from OS 10.5.8?

I'm not very experienced with Macs, so please pardon my mistakes. I'm assisting a coworker with a client of ours who recently let go of one of their employees, and in the resulting meeting the person ...
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2answers
285 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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98 views

My SSD Drive has been converted to a Core Storage drive and cannot be erased/reformatted?

I put an SSD drive into my macbook pro. I should say that this drive hadn't been formatted and was a bootable drive with Yosemite OS on it, taken from another macbook pro... I booted the system up in ...
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362 views

Time Machine Restore Button Greyed Out For External Hard Drive

I guess I will give the short long story to whats going on. I recently brought my computer (Mid 2010 Macbook pro) in to the apple store cause its been crashing for some time. The first time around ...
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39 views

Backup keychains from hard drive

During the installation of Yosemite, I got locked out due to my hard drive having some errors. Thankfully I had a Windows partition and am able to access my files. However, how do I backup my ...
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271 views

How to let Time Machine automatically delete older backup files to free up disk space?

How to let Time Machine automatically delete older backup files to free up disk space? It does not seem to automatically do it as it starts a backup and failed at the middle complaining not enough ...
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8k views

Unable to format / erase hard drive

I have an external HD that died on me a while ago and I'm trying to see if I can format / erase it to start using it again. The disk does not show up in Finder but I can see it in Disk Utility. When ...
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60 views

Cannot locate 173 GB backups on hard drive

About my Mac Storage states that I have used 173 GB of my hard drive in backups. Where are these? My iPhoto library disappeared, and I have been unable to restore through Time Machine because it ...
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106 views

Disk Utility won't let me remove partition. No matter what

Since Yosemite was released this month, I decided to inaugurate it by downgrading from Mavericks to Snow Leopard. I decided to back some files up in a partition (on Mavericks) before wiping the main ...
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2answers
6k views

How to disable Time Machine for an external hard drive

My wife has a MacBook Pro and two external hard drives; both of which currently contain a Time Machine backup of her MacBook Pro hard drive. Now she wants to "turn off" Time Machine for one of her ...
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4k views

How to partition an SSD that fails with error 69888 - couldn't unmount disk?

I erased the SSD drive in my MacBook and was reinstalling Lion when it failed about 75% through the install. Now in Disk Utility, sometimes I see the SSD drive and sometimes I boot and it's not there ...
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59 views

Macbook waking harddrives when i walk near it

This might be hard for some to believe but i swear it is a fact. I purchased a brand new MBP Mid 2014, 2.8 Ghz 1TB 16GB. Works well. I have a few external drives connected to it. When i put the MBP ...
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3answers
85 views

How do I move my System files to another drive without reformatting the destination?

I have a 128G SSD for my main drive and it is nearly full, I'd like to move the OS (Yosemite) and all my data to my second drive, a 1TB hybrid drive which is installed in the DVD drive bay. How do I ...
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294 views

Yosemite Startup Manager After Downgrading to Mavericks

I downgraded from Yosemite Public Beta to Mavericks by: Created bootable Mavericks USB Booted Mac to the Mavericks USB Went into Disk Utility > Selected HD and Erased HD Restored to Mavericks Time ...
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2answers
805 views

Mac HDD Firmware for non-Mac-HDDs?

First of all: I use a MacBook (white) 13.3" 2Ghz (It says it's a MacBook3,1). There was an 80GB HDD (Hitachi) built in, which just turned out to be a little too... Well, it's not enough anymore. So ...
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173 views

Hard disk drive problem with Macbook Pro, can't see and repair it

I have a problem with my MacBook Pro 13'' mid 2012. I have an external HDD and when I insert it, it doesn't appear on the desktop. If I go into Disk Utility I can see it, but it is written in light ...
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1answer
1k views

Replaced hard drive - trying to do a clean install of OS-X on 2011 Macbook Pro

I've seen plenty of how to's on how to upgrade if you have a working installation of OS-X, however I purchased this macbook used, it needed a hard drive and a keyboard. So I put a new hard drive in ...
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651 views

Howto resize copied HFS+ partition above original size (320GB)?

I am running OS X Lion and my laptop has a 320GB drive. I bought a larger drive (750GB) and cloned the entire device from the old drive to the new using GNU ddrescue. After cloning everything looks ...
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45 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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151 views

Why is my USB drive suddenly read-only and how can I make it read-write again?

I have a 1 TB USB drive. I've been using it for months. My main iTunes library is on it. As of yesterday, for no apparent reason, it has become read only. I can't open iTunes. I also tried ...
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23 views

Combining two RAIDs

I have an OSX machine which houses 2 RAIDs made of 6 disks. The 2 RAIDs contain 6TB of data; they were set up with Disk Utility: A 'safe' 4TB RAID-1 (mirror) made of 2 x 4TB disks, 3.68TB used A ...
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17 views

Couldn’t modify partition map because file system verification failed [duplicate]

I accidentally deleted a bootcamp partition within Utility Disk. I tried to reclaim the free space by dragging over the free space but it does not work. Beyond this I verified and checked the disk ...
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1k views

Why does RAID 1 “Mirroring not provide performance improvements”?

I have always used Software RAIDs, either Apple-provided, or via SoftRAID, etc. I am about to re-zhuzh my arrays and decided to do a little research beforehand… and On Apple's site, there is a ...
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30 views

Make Carbon Copy to Time Capsule?

Can I copy my entire hard drive to my time capsule? I mean a bootable copy (carbon copy)?
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3answers
2k views

Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...
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1answer
90 views

Would it work if I swap the hard drive between two Macbook Pro?

I have a 17" and a 15" Macbook Pro from about 2010. The 15" one recently has some problem with the speaker. Can I take its hard drive out and install it into the other 17" one? Would it work? The ...
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27 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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21 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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2answers
99 views

Why my Mac OS X Startup Disk used space is around 30 GB

I just bought a new MacBook Air 128GB SSD. This is my first MAC. As on Windows, I want to create a separate partition for my Data. The Default partition shows around 30 GB used space. Why is it so? I ...
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147 views

Can you Recover Data from a Filevault encrypted harddrive externally?

My mac won't boot and it maybe a harddrive issue, but I need to get the data off it, is it possible to recover the data using a set of tools if I know the password and have the appropriate cables?
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1k views

New hard drive not recognized

I swapped the original 80 GB hard drive for a new 640 GB Samsung HM64JI hard drive. It is not recognized after booting from the 10.5 Installation DVD on Macbook 2.1 with recent EFI updates installed. ...
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110 views

Why is a hard drive not readable anymore after removing it from the Mac?

I have a mid 2010 27" iMac. Until this evening it had an SSD (primary drive with OS X Mavericks installation on it) and a HDD as second drive. The HDD is a Western Digital I built into the iMac in ...
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4answers
1k views

I think my HD is failing. Can't backup files from recovery mode. How can I preserve my data?

I'm really worried, and I'm hoping that you guys can help me salvage some files. Here's what happened: This morning I woke my iMac up from sleep, but it was hardly responding. I would click something ...
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52 views

Real performance boost with multiple partitions

I have a 1TB Hard drive with multiple partitions where I had previously installed Snow Leopard. Now I'm making a clean install of Mavericks and I have a couple of questions: 1) What are the real ...
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1answer
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Can only one partition of old hard drive been transferred to new MacBook?

I just took the hard drive out of my MacBook pro that broke down a few days ago and put it into an enclosure. My questions; If I buy a new MacBook pro, is it possible to ONLY transfer the Macintosh ...
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34 views

SSD Disk Utility & Install Failure

I've been running a SanDisk 256GB SSD for about a year. A week ago my system locked up and stopped being able to boot from the SSD. Booted from 10.9 USB installer, and went to disk utility, located ...
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46 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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46 views

Macbook Pro can't connect to internal hard drive even after changing the cable to the main circuit board

So I thought my macbook's hard drive crashed last month when a folder with a question mark didn't allow me to use it. I got it replaced, but shortly after, the problem persisted. I thought it would be ...
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41 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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1answer
702 views

External HDD can be seen in Disk Utility but not in Finder

I've been using my external HDD a lot of times before on my Macbook Pro 13" OS X version 10.9.5, but it doesn't seem to appear in my Finder anymore. It can be seen in Disk Utility, though. Can anyone ...
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36 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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4answers
998 views

I can't write to my flash drive, and it is already in the MS-DOS (FAT) Format. Why?

This is my first question on this website. I am using a Mac Air, and I have a flash drive in which I can read from. I am able to copy files from this onto my Desktop, or anywhere on my computer for ...
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3answers
10k views

fsck and Disk Utility won't repair Volume: invalid b-tree node size

I accidentally wrote some .iso data to a disk through dd by mistake. I cancelled the command after just 2 seconds but that was enough to wipe the first EFI partition (200MB) and a bit of the second ...
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Can my retina MacBook Pro SSD drive go to sleep?

In energy settings there are several options concerning the power consumption of you mac, like dim display, app nap, but also "Put harddisk to sleep when possible". To my knowledge, an HD hard disk ...
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2k views

Macbook: Flashing Folder with Question Mark At Startup

So, I've been hearing a clicking sound coming from my macbook for about a week now. The last few days the system has just been locking itself up when I try to type anything. Now, at startup I see ...
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35 views

How to automount UDF partition with strange partition ID

I have two partitions on my usb hdd: #: id cyl hd sec - cyl hd sec [ start - size] ------------------------------------------------------------------------ 1: AF 1023 254 63 - 1023 ...
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58 views

Does Spotlight index SSDs faster than HDDs?

Ive been thinking about swapping my MacBook Pro's (late 2012) hard drive for an SSD for a while now, as there becoming more affordable at decent sizes. Apart from the read / write and startup time ...
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189 views

Unable to extend my partition

I have searched through this site alot and i wasn't able to find any solutions. My situation is the following: I decided to install linux to dual boot with OSX at my 1TB fully encrypted with FV2 hard ...
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308 views

External Hard-disk showing Input/Output error

I have a 1TB External Hard drive which I'm currently not able to access. When I open the External drive in Finder, It shows it's empty. When I use the option to "Get Info", I get the dialog box ...