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

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Will I be able to access my Time Machine backups after changing Hard Drive

I have a 2010 MacBook Pro - I am planning on swapping out the Optical Drive for an SSD in the near future, and then re-installing OS X across the Hard Drive and SSD (in a Fusion Drive format). I have ...
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30 views

Change write permissions on internal HD outside of OS

I have a late 2009 iMac with a 1TB internal HD. I am unable to boot the OS however when running disk utility, through target boot and booting into an external HD, I am unable to repair, erase, ...
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62 views

Missing hard disk space

I'm trying to figure out where my missing hard disk space is going. I'm using du and df from the command line and there seems to be a clear discrepancy. So here's the du output: $ sudo du -h -d 1 / ...
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2answers
95 views

Hard Drive Space Eaten Up Daily. Think Crashplan may be a reason. Need Help

I've been suffering with this for weeks. I'm running Yosemite on a 15" MBP. I am told daily that I have no more disk space and no matter what I end up deleting I'm left with 1GB minutes later. About ...
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3k views

Yosemite Disk Utility: You may only split this volume in two

I just upgraded to 10.10- Yosemite. I have an external 4TB hard drive. These are the problems I see with Disk Utility: No more than two partitions are allowed. Changing the partition size I can ...
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2answers
727 views

SSD w/ brand new clean in stall of Yosemite fails to boot

I've just installed a new version of Yosemite on a third party SSD (Crucial). When I boot it up it hangs on a gray screen. Steps that got me here: Connect SSD to Macbook Pro (with existing HD) ...
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2answers
63 views

Caching HDD Files on an SSD

Given a system with a fast internal SSD, and a slower external HDD, is it possible to improve the HDD's performance using free space on the SSD without creating a Fusion Drive? In my case the external ...
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20 views

DriveDx shutdown count is very high

DriveDx claims that there have been 2051 power cycles on my Fusion SSD in 17 months. For the Fusion Hard drive part it claims 6402 power cycles count. SSD power on time has been 12250 hours and ...
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2answers
73 views

Flashing folder at start up, all recommended troubleshooting has failed

I really hope someone might be able to help with this cause I am getting frustrated beyond belief. I have a MacBook Pro with Mavericks OS X 10.9. About a week ago it crashed while I was printing, ...
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245 views

Moving iPhoto to external drive on a MacBook Pro (Retina, 13-inch, Mid 2014) with 8 GB 1600 MHz DDR3

I bought a Seagate external HD 500gb with my Mac. Recently started using Photoshop and Lightroom, which take up a ton of space. I was thinking of moving my entire iPhoto to the Seagate to free up ...
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245 views

MacBook Pro SSD boot issues

So I have a MacBook Pro (Late '12), has run seamlessly with all OSes that I have put on it, (not to say that this problem is due to the OS). (I'm trying to be as detailed as possible so bear with me.) ...
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47 views

File in /.Spotlight-V100 on bad block

So I have a file /.Spotlight-V100/Store-V2/9ED490D0-6169-4B28-A1B6-46E34ABD0CD1/5.indexPositions which when read causes an IO error disk1: I/O error. 0 [Level 3] [Facility ...
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1answer
49 views

Time Machine file structure?

I have a drive used only for Time Machine. The drive is 3TB, with 1.75TB showing available, so TM actually has used only 1.25TB, yet the total reflects 50+ backups of 80GB each. The question is - ...
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1answer
254 views

OS X Yosemite always mounts usb-hdd to the new folder

I have a Seagate Free Agent HDD drive with NTFS formatted. Since there was trouble with writing to NTFS partition in Yosemite, I've installed OSXFUSE from dmg package and ntfs-3g from homebrew and it ...
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1answer
828 views

CoreStorageFamily::unlockVEKs() failed to unwrap the vek, status = e00002bc

I have a filevault2 disk with two partition. One is the boot partition, the other contains data, both are encrypted. Today, after installing the latest 10.8 update (10.8.4 I guess), the computer ...
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1answer
440 views

What does “EFI system partition couldn't be created” mean?

When trying to click "Repair Disk" on an external hard drive from Disk Utility, I got the following error message: ... Repairing the EFI system partition's file system Updating boot support ...
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2answers
4k views

Macbook Pro boots successfully when using hard drive in USB enclosure but doesn't boot when connected internally

Apologies for the long question. I will keep it as simple as I can. Last week my Macbook Pro (13-inch, Mid 2010) started to act strange. It started when I tried to open Skype and received an error ...
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304 views

Partition issues after deleting Core Storage Logical Volume Group. Everything prompts an unmount error. HELP!

I followed the instructions on this link (last answer) to delete the Core Storage Logical Volume Group via terminal while pressing Cmd+R during startup. These are the functions I used in terminal: ...
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1answer
19 views

Apple store question about installing new hard drive

I plan to make a trip up to the apple store tomorrow. I need them to put in a new hard drive in my Macbook Pro mid-2010 15". Do I need to make an appointment with them? or can I just show up and drop ...
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1answer
81 views

Convert Mac Pro internal boot drive into an external harddrive without wiping

I have a 2008 Mac Pro running Yosemite. I just purchased a solid state hard drive which I want to become my boot drive. I do not want to transfer the data from the original boot drive to the solid ...
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17 views

Best overall hard drive for a macbook pro 15" mid-2010

I am not up to date with all the specification. How does something like this look? ...
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75 views

Opening up your MacBook and how to avoid static electricity

Static electricity can exert incredibly high voltages (upward of a thousand volts) which can zap sensitive equipment. Hence, all videos that explain opening up your Mac feature some form of ...
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1answer
161 views

How to empty MobileBackups.trash content

I noticed that OSX reports a wrong disk space amount, reporting that "Other" space is near to 170Gb. Digging into the issue here "Huge inconsistency in disk space measurement, missing 50% of the ...
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1answer
147 views

Huge inconsistency in disk space measurement, missing 50% of the disk

I own a MacBook Pro 13 Retina, OSX reports disk usage as 450Gb, but utilities such as DiskInventoryX tells a different story reporting 226Gb as used disk space: How can I convince OSX to give me ...
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1answer
109 views

How to reset a Seagate FreeAgent Go Mac External Hard drive to use with a new Mac?

I have a 500 GB external hard drive that I want to use with my new Mac (OS X Yosemite). I simply want to clear the external drive of everything that was on my old Mac (I don't want to transfer any ...
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19k views

How do I fix my SSD after installing Yosemite and Enabling TRIM? No boot & can't erase

I recently upgraded to Yosemite, enabled FileVault and foolishly enabled TRIM (had no idea it wasn't supported). Upon restart, my machine gets the grey screen with the crossed-out circle of death. ...
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1answer
21 views

disk become empty after delete a large file

I have a 2T mobile disk with the format of NTFS. I store 1T files on it, including a large file with the size of 260G. After I delete the large file, all the file was gone. I remount the disk again ...
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2answers
2k 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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6k views

How to fix “Error: -5341: MediaKit reports partition (map) too small” after upgrading to a larger hard disk?

I recently bought a new SSD drive, as my stored data amounts outgrew the old one a little bit. After copying all data using dd if=/dev/disk0 of=/dev/disk1, I want to enlarge my system partition, but ...
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140 views

Something like MHDDFS for OS X?

I'm trying to have my Mac Mini take over all my server's functions (I'm recycling the server hardware into a Linux workstation). Its pretty much all done, except for the file-serving portions. ...
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1answer
149 views

SSD upgrade for 2013 21" iMac?

I have got an iMac (EMC 2638) here, with 1TB hard drive. I have read that there is a PCIe SSD slot on those iMacs as well, originally for the fusion drive. Is it possible to upgrade my iMac with such ...
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SSD upgrade for mid 2012 MBP

I recently started getting performance issues with my MBP while running apps like Xcode and Eclipse. A quick diagnostic of the system showed that it thrashed over 458k times. Vendor Specific SMART ...
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1answer
225 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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1answer
64 views

How to securely erase an arbitrary SATA drive, utilizing the drive firmware to do so?

The problem with using Disk Utility or dd if=/dev/zero to erase a disk is that: It applies unnecessary wear to SSD drives. It sends the drive's capacity worth of zeroes over the drive's interface. ...
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65 views

how do I transfer my iOS developer profile to another computer because of hardware failure?

Is it possible to transfer my iOS developer profile to another computer if my hardware failed but the hard disk is ok?
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1answer
34 views

Can I use Firewire or Thunderbolt cable with this hard drive dock?

I'm an external hard drive docking station: http://www.amazon.com/Thermaltake-BlacX-eSATA-Docking-Station/dp/B001A4HAFS/. I'm currently using the USB2.0 cable that comes with it. I wonder if I could ...
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326 views

Disk Utility vs Carbon Copy Cloner - How to clone your drive with Apple's built-in app

What is the point of using commercial apps like Carbon Copy Cloner when disk utility can also clone your drives? This article here ...
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3answers
225 views

Is it possible to restore OS X .dmg file to External Drive?

I recently traded in my iMac with 1TB HDD for a MacBook Pro with a 256 GB flash drive. I want to restore my previous hard drive but obviously it won't fit on the new hard drive. Is it possible to ...
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1answer
3k views

OS X Yosemite Hard Disk Errors even after Repairing them

Basically, I do a lot of C programming (for class) so I use gcc a lot on my mac. Recently since two days, whenever I ran it, the entire computer is getting frozen, and a force restart is necessary to ...
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26 views

How can I set up the internal HDD on my iMac to be able to connect to it from my laptop at college?

To better explain my question and what I am trying to do... my iMac is in my room in my parents house, and I want to be able to connect to my iMac's hard drive from about 300 miles away at college on ...
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2answers
110 views

2012 MacMini HDD died while installing Win 10 Tech Preview

I have a problem with a 2012 MacMini. diskutil list shows an internal 500 GB 5400 rpm drive as having 0 Bytes. It also states that it is unknown. Would TestDisk be able to reformat the drive? Disk ...
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221 views

WD My Book Media shows up in diskutil, but doesn't mount or show up in Disk Utility

Initially this drive was connected (via FireWire) to my wife's Mac (still running OS X 10.7), but she it would not mount any more and she asked me to look at it. After reading suggestions on-line, I ...
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345 views

Unable to partition hard drive with Yosemite (Disk Utility hangs)

I have a 2007 model Macbook Pro running Yosemite 10.10.1. My father recently upgraded my hard drive for me from the stock 320GB hdd to a hybrid 500GB hdd. He's not really a Mac user and said there ...
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2answers
241 views

Clean install of Yosemite problem

Hopefully someone can help me. I've tried so many options. I purchased a used MacBook Pro, late 2011 model. The person I purchased it from said he wiped the hard drive, but when I got home, it seems ...
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155 views

Disk Capacity 500 gb falls to 250 gb after deleting files

I was attempting to free up disk space on my MB Pro - and subsequently deleted most of the iPhoto files & folders as I was constantly receing a 'your start up disk is almost full (e.g. 2.5 gb left ...
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36 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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404 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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1answer
15 views

Actual Folder Size?

I have a TM back up from a retired drive. The folder info screen looks like this. The drive is 3TB and there's still 900GB free, so the 4.75TB reported size is not correct. Is there a simple way to ...
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1answer
163 views

Deleting content of /private/tmp moved on different HDD

I have a Macbook pro with 2 internal HD (stock HD for data and data doubler + SSD in place of the optical drive, hosting the OS). I'm now trying to optimize this setup to take into account the ...
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4answers
2k views

“Not enough space” on partitioning?

I have a 320GB harddrive with 95GB free. I boot to a 10.5 disk, open disk utility, and add a 40GB partition. Halfway through the progress bar, though, it tells me that there's not enough space. I'm ...