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

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Cannot delete Free Space on iMac 5K after I deleted Boot Camp partition with Disk Utility

I had Windows 10 installed via Boot Camp, and everything was running smoothly, except I did not think ahead when I had made the partition initially. So as I was using Windows more, I eventually ran ...
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2answers
209 views

Disconnect external HD when installing El Capitan upgrade?

I use an external HD with Time Machine to back up data. Should I disconnect external HD before installing/upgrading to El Capitan?
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1answer
261 views

Boot from usb take forever

Recently I made the stupid mistake of erasing MacBook Pro (2012) HDD without immediately installing OS X. And now it can't even boot or get to recovery utilities. So I decided to make a bootable OS X ...
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1answer
42 views

Recover my lost data

I wanted to delete my Linux partition, but I don't know why my OS X partition was also deleted. So, I then reformatted the partition and installed a new OS X (Yosemite) on that partition. I am ...
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0answers
26 views

I can't transfer data from my hard drive (FAT32) to my laptop

I have been using this hard drive for a while now and recently I haven't been able to transfer files from the hard drive. I have stored close to 500 GB of data and now that I am trying to move some of ...
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0answers
33 views

Disable boot volume

I would like to know how to stop a volume from being bootable. I've recently installed an SSD into an iMac by replacing the DVD drive with an SSD. The original hard drive is still in the iMac and is ...
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0answers
50 views

OS X Harddrive locking me out

I am trying to log into my mac (OS X Yosemite) but it keeps showing me this: I can't even go to recovery mode because when I hold option after rebooting, the only thing that comes up is "Macintosh ...
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0answers
12 views

Recovering a partition on a flash disk

The other day my 128gb flash stick refused to be recognised when I plugged it in, giving me a 'failed to initialize' error with options to format it or eject. This was particularly frustrating because ...
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1answer
619 views

How to remove/delete a partition in single-user mode?

I have a HD partition that is having problems. I have 3 partitions on that drive. When the partition is mounted (after boot) the disk can not unmount. However in single-user mode the partition is not ...
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1answer
30 views

Does Apple have a warranty on their hard drives?

I got a hard drive installed about a year or so ago and now the hard drive seems to be failing. Making intermittent beeping noises. I got the hard drive installed at the genius bar. Is there an ...
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0answers
183 views

Hard Drive: I can see it in /Volumes, but it does not show up in Finder

I'm connecting my external Hard Drive on my Mac. It's a NTFS drive. It used to show up normally on Finder's sidebar and Desktop as well, but it doesn't anymore. But it does show up in /Volumes ...
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1answer
167 views

Fusion Drive with missing partition

Initially my Fusion drive (1TB data disk + 240 GB SSD) consisted of a single partition where it was installed El Capitan, then I split the fusion drive into two partitions, the second partition I ...
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1answer
19 views

Securing USB Drive in Place on iMac

The internal drive of my iMac went bust recently, the iMac is not under warranty anymore so I do not plan to fix it anytime soon. At the moment I am using an external drive and I am managing. The only ...
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8answers
15k views

Time Machine ridiculously slow after El Capitan upgrade

I recently updated to El Capitan, and told Time Machine to backup. It got stuck on Preparing Backup for hours, so I stopped it, deleted the InProgress file, rebooted and tried again. After ~30 mins, ...
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0answers
136 views

What are the advantages or disadvantages to Logical Volume Groups vs traditional partitions

I recently installed a new 3TB hard drive on a Mac Pro (3,1) running yosemite. With other hard disks, I had previously installed the hard disk and then erased in disk utility getting the traditional ...
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0answers
81 views

Western Digital Firmware updater will not detect drive

I have two western digital for mac external hard drives. And both were disconnecting when I plug them into a USB 3.0 external four-way port, but not a USB 2.0 port. Found out this was a common ...
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1answer
45 views

Could I connect a macbook pro to an external hard drive for use with time machine

I want to know if connecting a macbook pro to an external hard drive for use with time machine when I am not using it, at night, will work. If I then disconnect it in the morning (regardless of the ...
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1answer
302 views

Read files from old windows-formatted external USB hard drive

Years ago, I used an external USB hard drive with my PC (most likely Windows XP at the time). I've been trying to recover some files off of the old drive, but I no longer have a Windows machine and ...
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0answers
60 views

Scripting a Partition Scheme for CoreStorage - Mac

I've read a lot of information about the CoreStorage/Fusion Drive setup. In our environment, we work on a multitude of configurations of Macs, many with multiple operating systems on them. As such, ...
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1answer
175 views

Boot Camp failed and reduced Macintosh HD partition from 3TB to 1,46TB

What went wrong? I created a new partition with Boot Camp Assistant (OS X 2,25TB | WIN 850GB), but during the partition process, the iMac suddenly restarted. When it got back on the Fusion Drive's ...
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4answers
17k views

Can't write on external HDD after upgrading to OS X El Capitan

I am using a LaCie external hard disk in my MacBookPro for 3 years. After having updated to OS X El Capitan, I am no longer able to write on the HDD and I have read-only privileges. Info shows that ...
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1answer
176 views

Help partitioning “free space” with utility disk

I've been trying to partition my harddrive to have ~50 gb of unallocated space (right now there's one partition with the operating system on it, so I would like to have that plus the free space). This ...
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1answer
104 views

Startup Disk Full: Core File

The storage on my start up disk is being consumed by some kind of core files labeled as cores:1234 (numerical digits change). I downloaded OmniSweeper, which helped me locate these files and aware ...
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2answers
31 views

Trying to revive an old hard drive

I had a few old backup drives from my Windows computer that I wanted to go through. They are 5-6 years old. And they are internal drives so I got a USB adapter kit from the brand Deltaco. So far I ...
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0answers
19 views

How to fix this hard disk on a virtual machine?

I have been using OSX on a virtual machine for some time, for developing purposes. From today, I'm starting to have hard disk issues. The Disk Utility Tool says that the hard disk has 107.37 GB, but I ...
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1answer
95 views

Finder error -36 when copying from data Blu-ray to HD

I've been having a re-occurring problem reading data from self-burnt data Blu-ray discs. I'll try to copy the contents of a disc to an external HD and nearly every time, at some point during the copy, ...
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1answer
1k views

Can't partition SSD

Hello I tried to install Windows 10 on my Mid 2012 13' MacBook pro with a Samsung SSD 850 EVO 500GB installed. In Boot Camp it won't partition my SSD. I also tried it in disk utility but it doesn't ...
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1answer
13k views

Why does Apple recommend a 2TB FD over a 1TB Fusion Drive for iMacs with 32GB of memory?

Under the 'Choose Storage' section on Apple's iMac configuration page there is a blue link titled 'How much storage is right for you? (Choose Storage) '. In that dialog it says: For the best ...
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1answer
59 views

How to stop my SSD “ejecting” from my iMac when in standby?

I recently purchased an SSD drive for my 2009 27" iMac to replace the DVD Drive. Everything installed fine, performance is good etc. However when the device (SSD) is put to "sleep", OS X sees it as ...
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1answer
87 views

USB Hard Drive HFS+ Encrypted Partition Formatted / Recovery

I have a WD 1TB USB External Hard Drive that was accidentally formatted. I had formatted the disk and started writing an ISO to the disk (less than 5 seconds), when I realized it was to the wrong one. ...
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0answers
21 views

What activated Continuity on my MBP?

My process of upgrading my early 2011 13" MBP (running the latest El Cap beta) to an SSHD was far more complicated than it had any right to be: I got an SSHD from Amazon, put it in the ...
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1answer
97 views

How to save data from a time machine backup that has gone bad

My 3TB USB disk I use as my Time Machine target has gone bad. I can mount it read only but no set of options I've tried allow me to mount it read/write. The fsck tells me that the catalog btree is ...
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2answers
52 views

How to clone a damaged HD?

Been through a bit of the suggested answers, nothing has been suggested that I haven't tried (unsuccesfully, as of yet), so I turn to the group for answers. I have a 2.5" HD from an MacBook ...
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1answer
68 views

osx corrupts usb (exFAT) on restart

So I have this problem with OS X, when I restart my system and it has the USB drive connected (I forgot to unplug it because I know what OS X causes), it corrupts the drive (i.e., on next restart it ...
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0answers
38 views

Are slow format speeds indicative of more severe hard drive problems?

I have an mid-2011 iMac, that has 4GB of RAM and a 500GB HDD (not SSD). Over the past few months I have experienced: Fairly frequent beach balls/general system slowdowns A worrying number of errors ...
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1answer
79 views

How do I access my old files from an old Macbook HDD with Lubuntu?

I wasn't sure if I should put this on the Apple or Linux stack exchange but here's my problem. So my old Macbook died a while back and I realized that it might have had some important information. My ...
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23 views

Can't find storage after fixing EFI system partition error

I followed How to fix the error: "This disk doesn’t contain an EFI system partition"? In the final step sudo dd if=/dev/disk1s1 of=/dev/disk0s1 I cloned an existing ESP from an internal ...
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1answer
876 views

How to stop decryption of external drive

I've searched on the internet for a while and asked my question on apples website discussions.apple.com as well, however I haven't found and answer yet and people aren't responding on apple's site so ...
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1answer
37 views

Fastest means to copy many drives to one drive

I have data on 16 drives that I want to consolidate to one drive. The 16 drives are external with a firewire connection. Currently I have the one drive connected as an external drive on firewire. I ...
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1answer
2k views

OS X can't unmount disk

My 1TB LaCie Rugged THB decided it was a good idea to stop working all of a sudden. If I open it in disk util I sometimes see an actual name of a partition, but most likely it's not the real name. In ...
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55 views

Lost a Fusion drive boot disk

i can see my Fusion Drive disks (ssd+hdd) in Terminal: But i lost it in the boot and cant boot MAC OS. (please see album with photos on http://imgur.com/a/N5zY2 ) I cant repair my system, when i ...
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0answers
110 views

Boot Camp partition won't show

I had Windows 10 installed on Boot Camp and updated Mac from Yosemite to El Capitan. Afterwards, I could no longer boot to Windows... I want a way to get to Windows or at least get to data on the ...
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1answer
36 views

Attaching External HD to Airport - Is It Secure?

I am thinking about attaching an external HD to my Airpot (ac), which I will use to back up my computer using SuperDuper on a nightly basis. However, I am concerned about security. I know that I can ...
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5answers
22k views

Paragon NTFS for Mac 14 doesn't see NTFS disk (OS X 10.11 El Capitan)

I upgraded my Yosemite to El Capitan few days ago. Also recently Paragon sent me an e-mail with an offer of free upgrade from version 12 to 14. Since I bought ver. 12, I decided to install version 14. ...
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1answer
1k views

Deleted all partitions on Fusion Drive. Don't know how to recover

I'm kind of a novice here, and I think I got in over my head. I was trying to do a clean install of El Capitan on my 5K iMac. It has a 1TB Fusion drive. I booted from a USB drive, entered Disk ...
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1answer
109 views

My SSD seems slow, could it be the link speed?

I just replaced my old HD from a late-2009 iMac with a new Samsung SSD 850 EVO 1TB. It was installed by an official Apple repair store but I am worried because it seems slower than my new macboook ...
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259 views

Fixing damaged hard drive after OSX update

I recently tried updating my Macbook Pro Retina to OSX El Capitan, however believing this to be a simple routine update, I did not backup my computer. Of course, the update was unsuccessful, somehow ...
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103 views

Can't format new SSHD?

I just got a new SSHD, but when I tried to put it in my early 2011 13" MBP and format it from a bootable drive, Disk Utility kept giving me the error message: could not mount disk0s2 with name (null) ...
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260 views

Missing SSD space on MBPr 13, El Capitan

I have the following problem: I had two partitions, one was ~190 GB, and another ~60GB. Then I wanted to delete the second partition and resize the first one. The deletion went well (I suppose), but I ...
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184 views

Recovery mode Disk Utility can't see new internal hard drive

Lots of similar questions, but no one seems to be having the exact problem I am. Hard drive on my mid-2012 MBP (Mavericks now, but originally Lion) died; I do have backups (including a clone of the ...