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

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346 views

Enable writing to NTFS harddrive with non-standard name on Mac

I have a lot of NTFS hard drives back when I used a Windows PC. I'm trying to write to these drives with my Macbook Pro on OSX Yosemite 10.10.2. I'm going through this tutorial. I have to write this ...
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630 views

APPLE SSD SM0512F Media Equivalent

My Mac Pro (Late 2013) uses an APPLE SSD SM0512F Media SSD; I'd like to buy an equivalent SSD to use externally for cloning, backups, etc. I noticed on the PassMark website it shows performance ...
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19 views

External HDD is mounted, but files are (suddenly) invisible

Being fed up not being able to write to my external HDD (which is ntfs) I decided to use this script. I checked the script beforehand (I am a ruby developer with some, but limited knowlegde of bash ...
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31 views

Unknown Disk Space, can't touch it [duplicate]

My visible Disk Usage minus free space is out by 123GB. Clarification: Externally booted disk repair show no errors. Permissions have been fixed. Time Machine has had local off with: sudo tmutil ...
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26 views

Mac Mini HDD noises and internal HDD Standby

I have a default Mac mini 2.8GHz 2014 with Fusion Drive. My problem is that the mac makes a few noises. Because it is my home server and guest are sleeping in that room these noises are annoying. I ...
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2answers
57 views

How do I mirror my hard drive?

How do I mirror my hard drive? I want to preserve programs for which I've lost the license number.
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54 views

Ipod classic freezes after library is half loaded - restore, new hard drive and Disk U don't work

My elderly 160gb ipod has a problem loading more than about 21,000 songs on to it. The loading from my Itunes from a late 2012 Mac is uneventful and everything looks fine and the Itunes goes through ...
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67 views

High CPU usage during disk operations

Early 2009 17" MacBookPro (MacBookPro5,2) 2.66 GHz Intel Core 2 Duo OS X Yosemite 10.10.3 240 GB OWC Mercury SSD, installed in 2010 I've had issues with high CPU usage for a while now. The original ...
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1answer
236 views

NTFS support for Mac

I am long time windows user with who just started using Mac. All my external drives(1 & 2tb 2.5 portable drive ) are formatted in NTFS. But I found that my mac cannot read or write on that. So, ...
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351 views

New “EFI boot” drive appearing after reverting OS X drive to HFS+

Months ago I performed a clean install of Yosemite, and as you can read elsewhere, drive was formatted as Core Storage. Later on I partitioned and put on Windows 8.1 through Bootcamp. Worked well for ...
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336 views

My MacBook won't recognize my external hard drive (Passport - that I use to back up the Mac!)

I'm not techie at all. But I manage the basics. I've always backed up my MacBook (2009) on a Passport. I just plug it in while the Mac is connected to power source & click the icon & it ...
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1answer
46 views

One of my start-up drives is missing

I have a Mac Pro (Early 2009) in which I am running two OS's. 10.10 on a Mercury Accelsior SSD and Snow Leopard on a conventional drive. Before upgrading the SSD from Mavericks to Yosemite all was ...
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45 views

Lost partition on WD 1.5 TB external drive

My 1.5 TB WD drive failed out of nowhere and now it shows up saying "The disk you inserted was not readable by this computer" This is how it shows up on Disk Utility This is what sudo gpt show ...
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2answers
77 views

Terminal command to arrange all files/folders by name on hard drive

Looking to tidy up my iMac. Like everyone, I have lots of files/folders on my iMac. When they get dragged and dropped, or moved around, they retain their position, and the only way to fix this is to ...
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1answer
102 views

Stop sign when booting from internal ssd, boot goes fine if the ssd is in external case

sorry for the long post and my english. I have an early 2011 Macbook Pro 13 which I purchased in july 2011 and it worked fine until one week ago. Since when I bought it i replaced the stock hdd with ...
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59 views

Unknown disk found using diskutil, cannot delete

Using the command line, I wanted to see all available drives on my machine. So, I type diskutil list and besides Recovery HD and Macintosh HD, I notice this: /dev/disk3 #: ...
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1answer
278 views

Why can't I mount a Samsung SSD 850 EVO?

I just bought a Samsung ATA III SSD drive, the Samsung 850 EVO. I installed it in an external enclosure that I know works with an ATA II drive, but I don't see the new drive in Disk Utility. ...
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87 views

Disk Utility won't let me create new partitions?

I had a 500gb HDD installed in my Mac running OS X 10.9.5 Mavericks. Being an older drive it started to have some issues, so yesterday I went out and purchased a new 1TB hard drive to replace the ...
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2answers
53 views

Is disk image encryption slower than partition encryption?

I am considering two options to encrypt some data: add a new encrypted partition add an encrypted disk image Which option is faster in terms of disk read/write speed? I suspect that an encrypted ...
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1answer
59 views

Save data from broken Macbook Pro HDD

I have a broken Macbook Pro HDD with two partitions on it: OS X and Bootcamp. I need to take some files from both partitions: the HDD is now mounted to another PC via. SATA adapter Windows sees the ...
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1answer
163 views

Fixing a broken hard drive's partition map

I have a drive that is corrupted. Disk utility could not repair the disk, so I attempted to follow some tutorials and repair the partitions using pdisk and testdisk, but things have gone south. Now ...
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26 views

Backing up data to an NTFS drive

I have a 2TB external hard drive that is about half full of various photos and other things that I use it to hold. Now, I'd like to backup my MacBook Air to it, as I have no more room on my computer. ...
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1answer
84 views

Fast external startup-disk for Macbook Air: SSD1 or Thunderbolt?

I bought a MacBook Air 13.3″ i7 8 GB RAM 128 GB SSD (early 2014) some months ago and found out that the 128 GB are definitely not enough! To somehow rectify my problem I though of buying a fast ...
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69 views

How can i delete a partition in Terminal when I can't simply combine because 'The given partitions are not on the same whole disk'?

Before I partitioned my HD, the only one I had was "Macintosh HD". The partition created one called "Macintosh HD2" I used terminal to erase "Macintosh HD2" somehow, but it returned as "Untitled." ...
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1answer
51 views

Maximum size drive for Mac OS X

4 TB = 1.8 TB ? What is the maximum size drive that can be used with various versions of Mac OS X? On a white Intel MacBook running Mac OS X 10.6.x, the Disk Utility app recognizes a new Seagate 4 ...
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45 views

How to backup, restore and erase OS X GPT using dd under Linux?

How does one backup, restore and erase OS X GPT using dd under Linux like it's shown in Archlinux Wiki using the MBR analogue: To backup the MBR: # dd if=/dev/sda of=/path/mbr-backup bs=512 count=1 ...
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1answer
215 views

840 EVO performance restoration

I got a Samsung 840 EVO mounted in a Mini late 2012. Now, this is the SSD affected by the notorious performance degradation problem. Searching samsung site, I was able to find an upgraded firmware ...
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1answer
45 views

Error with Android usb. Working Macintosh HD not repairable. Alternatives to backup?

I have to say first, I have almost zero experience is the use of Terminal, an usually I'm very careful with what command I use. I have tryed to create a bootable Android x86 usb and it was a success, ...
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60 views

Upgrading SSD and RAM has horrible side effects

upgrade a MBP 13inch ram and hdd to ssd Upgraded using carbon copy cloner. Constant beach balling Takes 40 seconds of white screen to get to the apple boot screen Network just doesn't work. It ...
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1answer
568 views

Deleting a hard drive protected by password with Mac OS X Yosemite

I recently changed my hard drive for a SSD device. The removed storage device can be used as an external drive, via USB. I want to delete everything on this HD, but it is asking me for a password when ...
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90 views

How to use Time Machine backup when hard drive is broken?

I have a MacBook Pro which I use Time Machine to back up usually weekly. Its hard drive broke recently. I got an exactly same hard drive and installed it into the laptop. How do I restore the ...
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149 views

Where is my disk space going?

My available disk space seems to «vanish» magically. OmniDiskSweeper tells me that 69.5 GB data is on my hard drive, but how come Finder and Terminal (and OmniDiskSweeper's drive list itself) tell me ...
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21 views

Can't read files on a secondary HDD with caddy

I added a secondary HDD thanks to a caddy (http://www.amazon.fr/gp/product/B0090KFOYS) in my MacBook Pro (Late 2011). I tried to format it and some errors occured. I retried it several times and the ...
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5answers
123 views

External Hard Drive size

I'm using a 13-inch 2013 macbook air with 4gb memory, and after a near disaster with a spilt drink I've realised I need to start backing it up. I don't know what size external hard drive I need ...
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2answers
55 views

Which upgrades to my iMac 2011 will improve performance the most? [closed]

I have started a job that will require processing of large datasets using python and ArcMap (separately and in conjunction with ArcMap). I have a 2011 27" iMac with the 3.1 Mhz i5 (3rd generation I ...
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28 views

Extracting files off sparsebundle with read errors

I have a large sparsbundle disk image on a drive that is reporting read errors. I am able to mount the image although it can sometimes take several minutes. I would like to copy any readable files ...
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1answer
21 views

Feasibility of swapping two MacBook Pros (both hard drive and RAM)?

I have an early 2011 MacBook Pro, and my sister has a mid-2012. I've already seen the suggested duplicate possibilities that say that just swapping the hard drives shouldn't be problematic, but I've ...
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1answer
38 views

A partition copied with cat can't be mounted

Well some days ago my mac got broken, I had an Ubuntu on it and booted through it, first thing I did I copied mac partition to an external hard partition, something like this: cat /dev/sda2 > ...
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1answer
665 views

Mac Mini can't unmount disk in Recovery Mode

I need to wipe my Mac Mini and reinstall OS X. Booting into recovery mode (holding command+option+R), I try to erase the disk in Disk Utility but it says it cannot unmount the disk or gets stuck on ...
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12 views

Is it possible to mark removable storage as permanent storage? [duplicate]

I recently purchased a 128gb Transcend Jet Drive for my 2014 MacBook pro, and plan to permanently leave the Jet Drive in the SD card slot. I use OneDrive for cloud storage, but the OneDrive client ...
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2answers
240 views

How can I verify that my Photos and iPhoto library are hard linking to the same disk data?

So I've discovered Apple's mystical implementation of hard linking with the new Photos app library and the old iPhoto library. Although Finder reports that both take up a significant and similar ...
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28 views

Problem with having a duplicate “Users” folder on non-bootable drive?

I just installed an SSD in my 2011 Macbook Pro (running an up-to-date copy of Yosemite), opting to follow this strategy of keeping my home folder on the SSD and then "offloading" larger folders (e.g., ...
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1answer
91 views

MacBook with a new hard drive fails to start

I have a 2009 MBP (7,1) which I recently upgraded the hard drive to a Crucial BX100SD. The hard drive was configured via. a USB to SATA cable on my desktop machine. I used a Flash install of ...
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2answers
249 views

Automatically shrink existing Time Machine Backup to a fixed size

I googled for hours to find a solution for this issue, but I couldn't find an answer that fitted for my problem. My setup: I have an iMac with a ~1TB Hard Drive I'm backing it up via Time Machine ...
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13 views

Why does disk utility want to erase my RAID 1 set?

I have 2 disks, the first a 2 TB and the second a 5 TB the 2 TB is split into 2 partitions and the 5 TB into 3 partitions with one 2TB RAID0 set, one 1TB RAID1 set and one single 3TB partition. I now ...
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79 views

Trying to zero out an external drive that shows “unable to write to last block”, keep on getting an I/O error

I'm trying to zero out a drive to use it as a Time Machine backup, firstly tried to format and "unable to write to last block" showed up. I tried to zero it out, but it took a large amount of time, ...
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1answer
365 views

Backup Disk 'doesn’t contain an EFI system partition'

I have a 750GB Western Digital external HDD which I use for Time Machine backups (MBP, OS 10.10.3). Today I had the need to boot to recovery, which I did from said backup. But I was unsuccessful in ...
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2answers
249 views

Hard Drive Issues with MacBook Pro 13-inch mid-2012

I'm trapped in a HDD nightmare with my MacBook Pro mid-2012. I updated to Yosemite 10.10.3. A couple of days after the update, I was watching a movie on my TV screen via HDMI. In the middle of the ...
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1answer
95 views

Flashing question mark when I start my Mac

https://support.apple.com/en-us/HT204323 I tried everything in here didn't work. I am using a 13" macbookpro retina, latest OS. Stuff I did that might have cause this: I updated 3 apps 1 of them ...
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1k views

USB Drive Will Not Mount, Not Listed in Disk Utilities, but Found In System Profiler

I have a Seagate FreeAgent Go drive with the optional docking station. I use it to keep files that I don't access on a regular basis and as a place to do "quick backups" of things like my Paperless ...