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

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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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2answers
3k views

Are there any wireless hard drives work well with Lion or newer Macs?

Are there any wireless hard drives to use with a mac? I need to copy paste files from and to this hard drive, when the disk on my mac is full. Do I need to look for a specific Apple drive or will any ...
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1answer
738 views

How to auto mount internal SATA hard disk drives after power failure/interruption?

In a Mac OS X 10.7.5 (Lion) system with two internal SATA drives, the internal drives are connected via a Highpoint Rocketraid controller and are configured without any RAID thus operating in legacy ...
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2answers
324 views

Is “The disk copy of 'filename.psd' was changed since…” dialog a sign of harddrive issues?

I saw this message and I'm not sure if it is a sign of harddrive issues (corruption, etc) or anything I should be concerned about. It popped up in Photoshop when saving. Might also be worth noting ...
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3answers
612 views

Any partition software just to partition unused space?

Currently I have one portable external hard drive which I use for Windows. It's 1TB and over 300GB is used space. I would like to partition it so I can access the unused space from my Mac. Can you all ...
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1answer
209 views

How can I hide a local disk in Finder at root level?

I want to hide some local disks from left pane (Devices section) in Finder. I want to remove them from the list of all disks at root level. What is the command in terminal? PS: I can't unmount ...
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2answers
268 views

I'd like to upgrade my MacBook Pro's RAM and hard drive. What brands are reliable?

I do heavy web development/web design and run my software on a MacBook Pro (Mid 2009) 2.8ghz model. I use Adobe products, run virtual machines in Parallels, have multiple browsers open, text editors ...
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1answer
695 views

Mac surface scan tool

I've had an SDcard lose its partition table, so I want to run a surface scan of the sdcard to make sure it's physically okay. Can you suggest a disk surface scan tool that runs on the Mac? Free, ...
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1answer
5k views

How to restore from a Time Machine backup when there is already a user account set up?

I can't figure out how to access my Time Machine backups since Apple replaced a defective hard drive. Some Background: My setup: iMac 24" (Early 2009), 3.06 GHz Core 2 Duo, OS X 10.7.3. I have been ...
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3answers
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Trouble with SSD/HDD in Macbook Pro Mid 2009

When my original HDD crashed I wanted to change it and choose a Samsung HDD (I don't not the exact model anymore). The problem with this one was that the system often hanged for several seconds until ...
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3answers
3k views

external hd mac ntfs 3g could not mount

I got an external hd "clickfree hd" but when trying it with my Mac I get the following error: ntfs 3g could not mount, error I have tried NTFS-3G, MacFuse and FuseOSX. I'm running Lion but this ...
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4answers
5k views

Why is my MBP not detecting my HDD/Optical Drive?

I've had a second hard drive in one of those optibay things in my MBP 5,1. It's been super awesome, until it stopped getting detected today. The second hard drive is getting power and is spinning up, ...
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4answers
945 views

After hard drive upgrade, battery not charging?

I just installed a new hard drive into my Macbook Pro 1,1. I had a little difficulty when I initially installed it because the monitor was not turning back on. After re-opening the MacBook Pro (with ...
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1answer
395 views

Can I use a Carbon Copy Cloner with a source disk that's larger than the target disk?

Carbon Copy Cloner is a great utility that's saved me a few times over the years. I've always used a much larger target drive than the source so I've never run into this problem before. Now I have a ...
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2answers
1k views

Hard drive unmounted and missing then back?

I have a 15" 2011 MBP with the OWC data doubler (a generic version). In my primary drive position (the spot where the factory HDD was) I have an OCZ-VERTEX 3. In the data doubler (the spot where the ...
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4answers
2k views

Where can I buy the four hard drive screws for my MacBook Pro 2011 15" (pic)

I'm trying to find four replacement mounting screws for the 2.5" hard drive in my MacBook Pro 2011 15". Here's a pic of the four screws (one attached to hard drive). I tried Googling and can't find ...
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1answer
665 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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1answer
232 views

How Do I Transfer A Project File Created Using iMovie 7 To A Hard Drive?

I've made a movie project in iMovie 7, but it's taken 3GB of space on my hard drive and I am lacking space right now, so I need to move it out onto a external hard drive. How can I do this?
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1answer
11 views

Is it possible/a good idea to use an ExpressCard SSD for swap?

I have a 48GB WinTec filemate ExpressCard SSD which I'm not currently using for anything. My idea was that I would re-partition it with a 16GB partition for swap and virtual memory (I have 8GB of ...
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1answer
116 views

Mac boots into log on screen quickly but takes long time to log into account

I just replaced the stock OEM hard drive on my 2010 macbook pro 15 inch with a Samsung 840 Pro SSD 256GB and installed Yosemite on it from scratch with USB (the first time i am using Yosemite). Now ...
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1answer
409 views

Resizing dual boot partitions in Yosemite

I have a dual boot Macbook Air with Yosemite and Ubuntu. I would like more space on my Ubuntu partition and need to therefore reduce the size of the Mac partition. I assume this will cause some damage ...
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1answer
88 views

How do I point Sonos to my music on an Airport Extreme connected hard drive?

I am attempting to set up a music library to use on my wifi based Sonos system. I have moved a copy of my iTunes music collection to an external USB 2.0 drive (Seagate FreeAgent GoFlex Drive) which ...
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2answers
98 views

Should I defrag my SSD before creating a partition for Boot Camp?

I have a 500GB SSD in my MacBook Pro. I have been using my laptop for over three years - and it was migrated using Migration Assistant from a previous laptop that I had been using for five years ...
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1answer
19 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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1answer
130 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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4answers
390 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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1answer
42 views

can't connect two hard-drives to my airport

I have two seagate usb 3.0 4tb drives full of music that I want to access wirelessly. I have my Bites USB 3.0 hub powered by DC 5V cord. I want to connect these to my airport extreme (5th gen), but ...
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1answer
225 views

Why is a secure erase 'not necessary' for SSD's?

I'm about to trade in a 2010 MacBook Pro with an SSD. However, I'm unable to do a Secure Erase from the recovery disk (as I used to do with mechanical hard drives before selling or giving away a ...
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1answer
412 views

Can't mount Macintosh HD volume - journal issue

My MacBook Pro (Mavericks) keeps booting into OS X Startup Utility. Disk Utility shows Macintosh HD volume as unavailable - not mounted. Running fsck_hfs -l /dev/disk0s2 returns: ** /dev/rdisk0s2 ...
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1answer
5k views

Can I simply install a fresh OS X without a thumb drive?

I've always installed a new OS X install via a thumb drive. However, at that time, I only had a single hard drive. Now, I have two hard drives, but the question is: Do I still need a thumb drive now? ...
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1answer
50 views

Apple support, mac with unencrypted drive

Because of an incident happened a few days ago, I'll have to bring my MacBook Pro to an Apple Store to get it repaired. Problem: Even though automatic logins are disabled, and to access the computer ...
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1answer
53 views

How should I restore a backup of my user account from a .dmg?

I have on my external hard drive a .dmg which is a backup from when my internal hardrive was breaking. Fixing the (internal) hard drive I then went on to erase it. And reinstall OSX in the process it ...
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2answers
5k 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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1answer
30 views

“disk full” error — quota disagrees with system information

When I try to download anything or create/save new files, it fails saying "Disk full". Entering quota in terminal tells me around 417600 blocks have been used out of 512000. However, going to About ...
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1answer
3k views

Mid-2012 MacBook Pro hard drive failure (maybe? not really.)

Mid 2012 MBP with OEM hard drive. I booted it this morning to a flashing question mark folder. I happened to have an external drive with OSX on it, booted to that external drive just fine. I opened ...
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2answers
175 views

How do I remount USB Flash Drive or SD card?

I noticed that I could remount my USB hard drive through terminal after I eject it by typing diskutil list to find the drive and diskutil mountDisk /dev/disk"X"... So I tried to do the same with my ...
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2answers
1k views

How to delete partition disk0s4?

A while ago, I dual booted with ubuntu linux and followed a tutorial on youtube to do so, but later I wanted all of my hard drive to be for osx, so I deleted the ubuntu partition, but now I am left ...
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4answers
7k views

What is filling up my hard drive so fast?

Last night (Because my hard drive was almost full) I freed about 4GB. Then I came back to my Macbook about 3hrs later (I left it idle) and Its was full again. Is something is eating my mac? If I go ...
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1answer
177 views

How do I stop my external hard drive from using all my RAM?

I'm running OSX Mavericks, and have an external 500Gb HD connected via firewire. I have 24GB's of RAM, and fairly often my RAM usage will spike to 23.95 GBs in use and literally leave me with only 50 ...
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1answer
131 views

Videos/Movies filling up my HDD

Am a bit of an adrenaline junkie and have 2 GoPros that I use to create movies with in iMovie. At the moment I can't seem to make any as my startup disk is full of 575 gb of Movie data, despite ...
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1answer
33 views

What does it mean when Repair Disk takes just a few seconds to complete?

I have the flashing finder icon problem. When I boot from DVD, I cannot choose the disk as Startup Disk. However, it appears in Disk Utility. When I run Repair Disk I can see the disk, and that it has ...
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2answers
197 views

How to find file system of external hard drive?

I have plugged external hard drive. It does not show in Normal Mode. I can see its Type Name and Identifier thru terminal. I want to find the file system of the external hard drive. I want to format ...
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1answer
93 views

Setting Up Raid iMac

I have one lacie 2big thunderbolt 4th unit setup as raid 1. I want to add a lacie 2big thunderbolt 4th unit. How do I get it set up so the entire unit 1 is mirrored onto unit 2(Raid1)?
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1answer
152 views

escape the target mode

I tried to install Windows on my Mac Pro but it failed because my disk needed to be repaired; it was suggested that I hold cmd + r during a restart. I tried that but when it restarted I was showed a ...
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1answer
474 views

Resizing without DESTROYING the second partition of a disk

I have a disk that was partitioned in two. The first partition was 1.8TB and is called TIME MACHINE. The second one was 1.2 TB and I call it TOSHIBA 1.2TB. I would like to reduce the first partition ...
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1answer
140 views

Could two WD Passport Ultra 1TB drives be used in the OWC Mercury Elite Pro Dual mini enclosure as RAID 1?

I'm thinking of buying one more WD Passport Ultra 1TB (I have one already) so that in the near future I could disassemble the two Passports and install the 1TB drives into the OWC Mercury Elite Pro ...
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3answers
5k views

Why doesn't my Mac Pro see my new 4TB SATA drive?

I purchased a Seagate ST4000DX001 4TB SATA Hybrid Drive (SSHD) and installed it into my Mac Pro (six core 3.33 GHZ MacPro5,1) in one of the internal SATA drive bays. However, the system didn't see it ...
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1answer
2k views

Disk Utility not opening in Mavericks

I had used a Seagate external HD as Time Machine back up for a year or so. Since I got a gift of a better EHD now I wanted to erase all data in the old EHD. I thought a simple Format through Disk ...
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1answer
571 views

Entering Time Machine on an external drive does not work

If I open an external drive, or an folder on that drive, in the Finder, then enter Time Machine by clicking on the menu bar icon and selecting "Enter Time Machine", then Time Machine runs, but it ...
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1answer
2k views

Shared library between Macbook Air, iMac, Airport Time Capsule

My Early 2008 iMac alu 24" HD drive has finally died and I'm in the process of replacing it. I've also recently got a 2013 Mac Air. The MacAir SSD drive is small so I want to share the iTunes/iPhoto ...