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

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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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34 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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24 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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48 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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15 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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22 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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16 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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34 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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117 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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21 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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54 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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11 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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40 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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137 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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295 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 ...
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36 views

Apple MacBook Air mid-2012

A few days ago, I got my Macbook Air battery changed at an Apple store. Since then, about once a day, I've had a "kernel panic" crash, which seems to happen randomly while I'm working. (I've never ...
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78 views

Mac Mini with lots of I/O errors and related issues, trouble identifying culprit

Setup: Mac Mini 2011 with two drives: SSD with OS X Yosemite and admin account home folder HDD with my user home folder Symptoms: It began as many months of seemingly random slowdowns/beach ...
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48 views

Copy an iPhone's disk contents (filesystem) to a computer

I like to get a clear view at how an iPhone's file system. Especially in the case of damaged data. Apart from using a professional (and costly) data recovery service, what other ways do exist to ...
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69 views

Why does my hard disk (in MBP optical caddy) keep unmounting when writing?

I replaced the optical drive in a 15" Macbook Pro (late 2011) with a new 2TB Samsung HDD in a caddy tray. It formatted fine and Disk Utility says it's OK. The problem occurs when I try to copy a ...
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299 views

You can’t change the startup disk to the selected disk?

I am booting my macbook through an external usb drive. At system preferences - startup disk when I try to select my internal harddisk it says: You can’t change the startup disk to the selected disk. ...
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134 views

Mavericks won't install on brand new SSD drive

Mid 2010 MacBook Pro 6,2 Had 10.9.1 installed on an SSD drive which failed. Got a replacement drive (same brand, model) Have a USB bootable thumb drive with 10.9.0 installation files on it Mac boots ...
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50 views

how to mount internal hd after booting with external drive?

I am running macosx 10.6.3 and trying to mount/access the internal hd through diskutility: it does not show up here. I tried this: ...
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80 views

Disk space lost after quitting disk partition

My MacBook Pro came with a 500 GB hard disk, and I used about 250 GB. I was trying to get a new logic partition using the OSX disk utility, and then my Mac Book Pro froze and I had to quit the Disk ...
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15 views

Rename the Disk, not the partition [duplicate]

I recently bought a MacBook Pro 15" of mid 2015. It has a SSD named 'This mac' but I want to rename it. I have two partitions, one called 'Macintosh HD' and one called 'Windows HD' since I have a ...
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85 views

How do i get full capacity from Fusion drive on vmWare ESXi 6.0 Mac Mini 7,1

I managed to install the free vmWare ESXi 6.0 hypervisor on a Mac Mini 7,1. It's running rather nicely from a USB memory. The mini has s 2TB Fusion drive. My problem is that i can only get the 106 GB ...
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137 views

Hard Drive not working with VirtualBox on Mac OS X 10.10.2

Basically, I have a Seagate Expansion Drive (1TB), I have ejected it from my MacBook and mounted it into the guest virtual machine, it comes up with the message: This USB device can perform ...
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262 views

Remotely Access WD MyCloud EX2 Using Finder

We recently purchased a WD MyCloud EX2 NAS storage drive in my office. On our local network, we're able to use Finder>Go>Connect To Server, mount the drive, and access files simply through finder. ...
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85 views

Seagate Slim 2TB Not Recognized

I recently purchased a Seagate Slim 2TB external HD. I connected it to my 2010 iMac, formatted it as exFAT, and moved a bunch of files. I don't remember exactly what process I went through with ...
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21 views

iBook G4r system installation

I have an iBook G4, HDD wiped clean. I attempted to install Tiger from the disk. It got a bit into the install and it shutdown, so it did not complete the install. Also, it will not power up now so ...
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154 views

Sort and remove duplicate photos

I have been trying to collate all my photos & remove the duplicated ones. I have purchased a few apps but none do the job properly, they are still there the next day, I have 3 hard drives so ...
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49 views

Auto unmount time machine drive on sleep

I keep a drive attached to my MacBook for Time Machine backups when I'm at my desk. I also regularly work from places other than my desk. Most of the time, if I close the laptop lid I intend to leave ...
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14 views

Mac OS taking more than usual space on external drives

Since when I started using mac os I noticed that I'm having much less free space on my external drives than before. I even tried to sum up the content on my external drive and the total size was less ...
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49 views

What happens if I have switched the Time Machine off?

Im using the MacBook Pro Retina and currently using an external hard drive to store many datas using the Time Machine, i.e: songs, images, movies, docs and so on. I was wondering what will happen if I ...
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42 views

Mount part of a failed Fusion drive

Long story below. I have the rotating 3TB drive part of a fusion drive. Is it possible to fix/mount/access the files on this drive? I have it in a external usb dock. I get the option to "fix" but it ...
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31 views

Anything in Mac OS to interfere with using a disk through a USB hub?

Have Modbook Pro with OS 10.10.2 and a powered seven-port USB hub. A 750-GB bus-powered drive has no problems with the hub in-between. But a powered drive with three partitions, one of them a Time ...
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104 views

MacBook not able to boot using OS X (Yosemite) after partitioning the Macintosh HD (hdd) while installing Kali Linux

I tried to partition the HDD using GParted but it didn't work out. Maybe because I messed up. So after cancelling the whole process, I rebooted my laptop. When I tried booting through OS X, it did not ...
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55 views

USB drive causes “OS X Can't Repair The Disk” error repeatedly

I've got a 2.5" 1 TB external that I've used for a couple years now. Initially it was in an OWC enclosure, and then more recently its in a Sabrent enclosure that I bought off of Amazon to get USB 3.0 ...
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262 views

My MacBook Pro, gets stuck at boot screen and the graphics look weird

I have a 2011 MacBook Pro i7 and I have upgraded the memory to 8 GB and the HD to an SSD 500GB. The other day I had it running for 3 days non-stop and when I tried to use it it was frozen. I reset it ...
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39 views

New drive won't boot internally

So I purchased a new 2TB drive (Samsung model #ST2000LM003) for my 13" MacBook Pro. No issues with the old one, just getting close to capacity. I connected it with a SATA/USB adapter, formatted it, ...
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68 views

Late 2011 MacBook Pro Cannot format HDD

I have a Late 2011 MacBook Pro with 750GB HDD. I was running Yosemite 10.10.2. I had about 250GB of partitioned HDD that i wanted to add to my main partition 'Macintosh HD'. It let me remove the ...
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153 views

External Drive showing only in system profiler

I have had a 1TB Western Digital Ultra external hard drive for nearly year. Out of nowhere it will not show in disk utility but it does show in system profiler. I have a Macbook pro mid 2012 running ...
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88 views

Force stuborn drive to unmount

I have a single partition disk whose filesystem will not mount properly. I don't care about the data and I would like to try reformatting the disk but I keep getting errors related to a failure ...
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24 views

Time machine backups

I recently tried to use the time machine backup but in the middle, it had about 15 minutes left...I shut my laptop (on accident). I got freaked out so I unplugged the external hard drive I was using. ...
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45 views

Target disk Macbook Pro HD not showing on Host Macbook Pro

I'm trying to recover some data such as movies, pictures, etc from my brother's macbook pro before he takes it in for a depot repair. Anyway, like i've been told, I boot his macbook into target disk ...
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67 views

Partition on External Hard Drive not showing in Finder

My external hard drive is partitioned into three parts - but somehow I made one of the parts go away/stop showing up in the Finder. I ran a set of recommended commands in terminal, and this is what I ...
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633 views

MBP with Serial ATA hard drive vs PCIe-based flash storage

I am not sure how much logical my question is but I am planing to purchase MBP for the first time and looking at the options I have in place, I am all confused. I am looking at these 2 options ...
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45 views

2nd SSD as main boot disk, what do I do with old filesystem?

Hello StackExchange! After a couple years of using my macbook pro, performance has deteriorated with each update to OSX. I've tried a few things to improve it, and with no results, I decided to get a ...
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18 views

Brand new 15in retina

I bought the mac then hooked up Time Machine and started restore to Mac HD. All was fine until the end when the backup from on 6 minutes to go for a couple of hours. No progress at all. So after ...
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jet-drive expansion card full with duplicate files like startup disks, how to prevent?

MBP retina 2014 Mid yr 13" w/ Yosemite , Start up disks were saying they were full within one week so I bought jet-drive expansion card and it keeps filling up with duplicate files just like Mac does, ...