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

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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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13 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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38 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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10 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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8 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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22 views

Can't erase unmountable external HD

My external HD isn't mounted and can't be repaired by Disk Utility. However, I'm also unable erase the disk: $ diskutil list disk2 /dev/disk2 #: TYPE NAME ...
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1answer
31 views

Is there a Byte-By-Byte Duplicate File Removal app for Mac? (not SHA-1 or MD5 hash!)

I recently switched to Mac and spent way too many hours on PC trying every duplicate removal app, eventually discovering that byte-by-byte checking was necessary to get accurate (safe) results, and ...
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1answer
25 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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1answer
20 views

Can I use a large external hard drive both as installation media and backup drive?

I am planning to upgrade my Mid 2010 13" Macbook Pro to Yosemite from Snow Leopard, on a new SSD hard drive. Being more experienced now with UNIX/Mac, I want to have a clean install to get rid of the ...
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70 views

Hard drive no longer accessible

This is a 4 TB hard drive formatted in Mac's Disk Utility as a single non bootable Exfat partition with the drive letter G. It worked fine before I decided to make a clone drive of my C bootable ...
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2answers
46 views

MacBook Pro 2010 all of a sudden slow

So literally out of the blue, my MB Pro is giving me the rainbow for minutes at time for 99% of the things I try to do. I maxed out the memory to 8GB last year, and that made a huge improvement, but ...
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30 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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14 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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3answers
40 views

MacBook Late 2008 SSD Upgrade

I have the late 2008 edition of the unibody MacBook. It has a built-in HDD which became unbelievably slow. The other tech-specs are: Now, since its not too bad regarding the processor and the ...
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2answers
46 views

Is there a limit on how much hard drive space a computer can handle?

I'm thinking of getting a new SSHD for my early 2011 13" MBP, and if I do, I had the idea to give my 500GB HDD to my friend who has a 2007 MacBook (white polycarbonate). He seems to think that his ...
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1answer
28 views

iPod classic hard drive upgrade

I was reading online that you can replace an iPod classic hard drive, my question is how do you manage to duplicate the iPod OS onto the new hard drive? How do you mount the iPod classic hard drive ...
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1answer
25 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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1answer
25 views

Does a bootable OS X drive need more free space than the installer?

I made an 8GB partition on my HD to serve as a bootable OS X Yosemite drive, but it seems to still have 2.63GB free after the bootable drive-making procedure. Does the bootable drive need that space ...
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1answer
39 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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1answer
34 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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1answer
22 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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17 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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9 views

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, ...
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66 views

MacBook Pro won’t boot up after putting the bottom case screws back in place

I'm kind new in this world of Apple, and I have an Intel-based Mac that suddenly had the hard drive fail. So I make a Mac OS X USB flash drive, and realize that the old hard drive died since “Disk ...
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55 views

Time Machine backup external disk not mounting anymore

I just installed Security Update 2015-002 (Version 1.0) on my MacBook. The latter has a 1.0TB internal hard drive, backed up onto a 2.0TB external USB2.0 3.5 inches hard drive. However, after ...
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60 views

HFS+ invalid number of allocation blocks

Okay so a few days ago I wanted to install Ubuntu GNOME over regular Ubuntu and it gave me the option to automatically overwrite my Ubuntu installation (that I had on a separate partition from my OS X ...
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2answers
151 views

Third party SSD optimization Yosemite

Unaware of the current issues with Third-Party SSD support on Yosemite I went ahead and bought a 128 GB Crucial MX100 SSD. I hear a lot of problems about enabling Trim on Yosemite etc. I recently ...
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1answer
36 views

My internal “Machintosh HD” is not detected by my MacBook Air

I was trying to clean install OS X (from http://www.ibtimes.co.uk/how-clean-install-os-x-yosemite-via-bootable-usb-flash-drive-1470625). I made the bootable disk, booted from it, and tried ...
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6answers
58 views

Upgrade RAM or switch to SSD? [closed]

I have a 2010 MacBook Pro (2.4Ghz) with 4GB of RAM (2x2) and a 250GB hard drive that's about 85% full. It's been running pretty sluggishly lately even for basic tasks. It is 5 years old, but a new ...
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1answer
41 views

Problems with target disk mode, HD does not show in Finder/Desktop (only in Disk Utility)

I have a MacBook Pro which goes straight to Disk Utility when I try to start it (it totally froze and I forced it off and on). And no luck in repairing the hard disk (Disk Utility can't repair…) I am ...
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1answer
24 views

Permanently disable time machine prompting for external disks

Is it possible to disable time machine prompting when inserting external disks? I use an appliance with SATA disks that regularly formats the disks. Whenever I plug such a disk in I get prompted ...
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54 views

Mac OS X dosen't recognize hard disk

I have replaced my CD drive with a Western Digital 750GB hard drive using the iFixit guide. My Mac for some reason throws error on any interaction with the hard drive, for example on disk utility ...
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98 views

How to recover data from MacBook which won't startup properly?

My 2012 MacBook Pro running OS X 10.7 Lion would not start up properly (it has the doomed flashing white question mark on a grey folder). I have tried the following: couldn't access Safe Mode; holding ...
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1answer
37 views

Is my Macbook too old to edit videos?

I got my Macbook Pro 15" around 2011 to edit videos for my film school. I carried my MacBook around with me using Final Cut Pro 7 with no problem for around 2 years. I stopped editing videos after I ...
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1answer
13 views

How to rename disk indentifier?

I created 5 partitions on my portable-drive via DiskUtility. $ diskutil list disk2 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: ...
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24 views

BBoD even after fresh install to new HDD

Got a bit of a weird issue which is driving me nuts, i have a Mac Pro tower which was purchased around 2010, it has been in storage for the past 2 years. Anyway I recently hooked it all up and found ...
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1answer
48 views

Is undoing Yosemite's CoreStorage conversion dangerous?

I tried to make an 8 GB partition on my hard drive so I could make it into a bootable drive, like Recovery HD but without the need to redownload the OS, but for some reason Disk Utility wouldn't let ...
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1answer
34 views

Remove partition and restore the space without erasing

Time ago I split the hard drive (500gb) in two partitions (250 each), now I don't need them anymore, so I have first erased successfully one partition and now I have still the second one (Mac HD 2) ...
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2answers
63 views

Is my hard drive already dying?

Although everything is working fine with my Macbook Air from Mid-2013, I have a few errors that bother me. Here they are: Onyx says this: The SMART status was not verified because it is not ...
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1answer
45 views

Flashing folder icon appeared once after changing Macbook hard drive

About 2 weeks ago, I updated my late 2011 Macbook Pro hard drive to a Crucial MX100 solid state drive. The drive installation and data migration went fine with no issues, but today I found the ...
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2answers
117 views

Stop sign at boot - new SSD

I've got a mid 2012 MBP 13" in which I inserted a brand new MX100 in the place of the old HDD. I've put the old HDD in a case in the superdrive place and tried to install 10.10 but the install failed. ...
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1answer
50 views

Replace Recovery HD with a “bootable drive” formatted partition?

A while ago, I had the idea to use the bootable Mac OS X USB drive-making procedure on a hard drive partition, so that I could basically have a version of the “Recovery HD” that doesn’t need to ...
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1answer
79 views

How to write fstab rules for an NTFS volume if the volume has no LABEL or UUID?

Basically, I was following this tutorial to enable writing to an NTFS Volume (which works when the Volume has a LABEL or UUID). I have an external USB drive with an NTFS volume that doesn't seem to ...
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23 views

Is enabling rw in /etc/fstab for an NTFS volume risky?

I've followed this tutorial: http://computers.tutsplus.com/tutorials/quick-tip-how-to-write-to-ntfs-drives-in-os-x-mavericks--cms-21434 I'm not familiar with Mac OS X's NTFS support, having used ...
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1answer
70 views

Mac terminal stop hard drive from spinning

Can I stop hard disk drives from spinning using Terminal? The reason why I want to know is because I have my Mac to backup at midnight however I do not want my HDD to be spinning all the time. I ...
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1answer
306 views

MacBook Pro upgrade to SSD migrating OSX and Bootcamp partitions

I wasn't able to find the info I needed here or on Apple's own forums or via Google, so here goes. I have a MacBook Pro 15" early 2011 model with a 500 GB internal hard disk drive (non-SSD). ...
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1answer
632 views

Error / Hang Installing Yosemite and Mavericks on Mac Pro SSD

Having had a hard drive failure, I'm attempting a clean install of Yosemite on a 2010 Mac Pro, with a brand new 120GB OWC SSD. I've tried using a Yosemite boot disk, using both an external hard drive ...
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31 views

Is there a way to manually repair a CoreStorage volume?

I was playing around with CoreStorage on a test disk and used the undocumented commands cs addDisk and cs removeDisk. The addDisk command worked just fine and was able to expand a logical volume ...
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105 views

Why is cp command 4 times slower than copying in Finder in OS X 10.6?

I accidentally stumbled upon this issue: Copying a 119 MB zip file took 4 times longer in Terminal (cp) than in Finder! I copied a file of 119 MB size in Terminal with time cp file.zip file2.zip ...
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20 views

Delete Xcode shared folder

Can I delete the Developer > Xcode > Shared folder? I want to clear out space and noticed that it takes up 2 gigs of data. Is it safe to delete? I use Xcode often.