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

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Shared library between Macbook Air, iMac, Airport Time Capsule

My Early 2008 iMac alu 24" HD drive has finally died and I'm in the process of replacing it. I've also recently got a 2013 Mac Air. The MacAir SSD drive is small so I want to share the iTunes/iPhoto ...
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4k views

iMac Startup I/O Error Despite Successful Disk Repair

My Early 2008 iMac with OSX 10.8.5 no longer boots beyond grey screen with spinning gear. Verbose mode shows a load of I/O errors. Disk Verify/Repair run via recovery partition completes successfully, ...
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3answers
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How To Securely Erase Free Space Using Terminal?

A friend told me that when you delete a file on your Mac in the normal way it actually stays where it is, but it is just no longer usable by your Mac. The addition of more files to your Mac causes ...
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393 views

Macbook Air hard drive crashed, download Lion without paying again?

2 days ago my girlfriend's MacBook Air crashed (mid 2012, running OS 10.8), only showing the infamous "folder" icon. Usual stuff did not help, reboot pressing alt, cd, etc. We went to an Apple Store ...
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586 views

install NTFS system checks?

I have a external hard drive and I'm checking it with the Disk Utility. However, it gave me an error says ** No NTFS file system checks have been implemented yet. How can I install one?
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113 views

New SATA cable, same hard drive problem

I was having hard drive problems with my mid-2010 unibody Macbook Pro. I bought a new hard drive and set up it using a SATA to USB cable before installing. Everything worked great so long as I had the ...
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2k views

Airport Extreme 802.11ac Can't See USB HDD

Hardware: Airport Extreme 802.11ac Transcend StoreJet 250GB HDD Belkin 4-port, powered USB hub Configuration: HDD formatted as MS-DOS (FAT32) via Disk Utility HDD connected to USB hub Airport ...
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754 views

2007 15" macbook pro disk full won't get past login screen

I was trying to help my brother fix his computer: A pop up that comes up at login that will tell you that your startup disk is full, he logs in and the screen gets stuck without loading any files. I ...
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586 views

If I add an SSD to a non-retina MBP 13" will weight drop to 3.5 lbs

I'm shopping for a new computer for university, and I'm considering the MBP 13". I don't do graphic intensive work, so I do not need the retina display. It's not worth the extra cash. However, because ...
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2answers
162 views

FusionDrive + Encrypted CoreStorage Volume - Problems writing to volume

Has anyone had experience with encrypted (home made!) FusionDrive volumes and intermittent failure of writes to this disk? I'm on a Late 2011 MBP 13" with (currently) 4 GB RAM, a 128 GB SSD and a 750 ...
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864 views

New HD - Mid 2007 MacBook - Wrong OS Disk

I am trying to install a new hard drive in a MacBook from mid-2007. (Original question re: drive replacement here) I have managed to install the physical drive, and format it ready for the ...
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Finder Reports Disk is Full, Other Tools Don't Account for it

I looked at some of the other Q&A here and didn't see a duplicate of this one (e.g., How can I figure out what's slowly eating my HD space? and other linked and related questions). Finder reports ...
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555 views

RAID 1 with a Mac - how to avoid formatting one of the drives

I have an iMac with an external 2TB HDD. I recently bought a second 2TB HDD in order to build a RAID 1 (mirrored) with the two drives. The problem is that Disk Utility forces me to create a new RAID ...
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1answer
222 views

I have deleted a bunch of music from iTunes on my Macbook Pro, but am not gaining any free space

I am trying to clear off a lot of extra space on my hard drive. I started with about 90 gigs of music today when I had about 45 gigs of space left available. I just deleted almost 40 gigs worth of ...
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101 views

Why is “Users” file size so big?

Why is "Users" file so huge? I am Migrating my Time Capsule's copy of my Air hard drive back to my Air with brand new Hard drive installed.
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55 views

Transfer rate between Hard Drives

I am on a 2012 Mac Pro. I just asked it to copy my iTunes music folder which happens to be 40GB. Now, SATA shows a 3Gb speed, so ~320Gb of data should take all of 110 seconds. I know 3Gb is the high ...
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359 views

Don't wake up external hard disk when saving to internal one

My problem is that I have an external hard drive connected to my Mac. Since it is only used for backup purposes, it is sleeping most of the time. However if I now want to save something (e.g. a ...
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1answer
139 views

How to know if a SSD will work on OS X?

I have a 2010 Macbook pro with a hard drive, and I'd like to replace it with a SSD. Information I've read about OS X and SSD is generally quite old, and not reassuring (not all SSD are supported, and ...
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1answer
405 views

Hard drive will not format - bad drive or enclosure?

Today, I received from Amazon a Thermaltake BlacX 5G hard drive docking station and a 2 TB Western Digital Green drive. I inserted the drive and was able to format it into a one partition drive. I ...
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Is my hard drive starting to fail?

My MacBook Pro (mid-2012, 16GB, i7 2.3) has started to misbehave: very slow to start up and shut down application launches are slow system becomes nearly unusable when "free" memory approaches zero. ...
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2answers
3k views

250GB of hidden space on macbook pro 13"

I have 250 GB of hidden space which I cannot track down. I've tried deleting it on Daisy Disk as an admin but I couldn't delete it. I don't know why it's happening but all I remember is using rEFIt ...
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127 views

USB drive accessible from Ubuntu laptop but can't find on OSX using Disk Utility or `df``

I have a 3T SATA hard drive in a USB enclosure. I can see it when I connect to my Ubuntu laptop, but I can't get it to be seen on my OSX desktop. My goal is to format from my Mac. I've tried giving ...
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585 views

Time Machine and case-sensitive HFS

Time Machine defaults to formatting a new drive to Journaled HFS+ (case-sensitive), if you set up the drive from within Time Machine itself. However, my main drive (the one Time Machine will be ...
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480 views

Something appears to be corrupting my kernel.log file, causing 5-10 second lock ups. What gives?

The Problem: Lately, every 10 minutes or so, my MacbookPro8,2 has been freezing up for 5-10 seconds. During those 5-10 seconds, video/audio content stops playing, all applications lock up, and hitting ...
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Partition/Volume grayed out but full read/write access

i have a Mac Server and a partition only for files. The volume is grayed out in the Finder sidebar, but if i go to the folder via CMD + G (go to folder) and type "/Volumes/Server_Daten" the volume ...
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4answers
6k views

Need to replace a hard drive in a macbook

I have been asked to "replace a hard drive in a macbook". I'm able to physically swap out the drive, but I have no idea how mac software works. I have some questions: If I put in a new hard drive, ...
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185 views

copied files from one drive to another showing incomplete progress bar

Copied files from one drive to another showing incomplete progress bar in mac. When recopying them it seems as they were complete.
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131 views

What is the limiting factor in /dev/zero speed?

I have installed 4 brand-new SATA hard drives in a mac pro. My OS is running on a fifth drive (SSD). I run this command pv /dev/zero -tpreb | sudo dd of=/dev/rdisk1 bs=512k for many hours to ...
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3answers
193 views

What sector is Photos folder on hard drive?

I'm trying to recover some deleted photos from my Mac, but the problem is that I'm not able to select what folder it should be looking in. I am, however, able to select what sector it should be ...
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1answer
196 views

How do I Create a Macro or Shortcut to run a Command Sequence Terminal

The following was posted as an answer to a question of read/write difficulties on NTFS drive which worked perfectly. Thanks Codler. My question is, is there a way for a noob like me to create a ...
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738 views

Looking for OpenSource Cleaning / cache deleting application for Mac

In the times of small SSD harddisks, I was looking for an open source software to delete caches and other space wasters like logs, unused application remains and such on Mac OSX, and all over the web ...
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How do I transfer Boot disk from External HDD to newly inserted SSD?

I'm trying to upgrade from my MacBook Pro's original HDD to a SSD. Right now my external HDD, which I installed OSX Mountain Lion on, has to be plugged in to boot. If I unplug it, I get a white screen ...
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1answer
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How can I do a fresh install of OSX Mountain Lion onto my SSD for my Macbook?

So I just got a SSD for my MacBook Pro (early 2011). My macbook is sluggish and has so much stuff that I don't use anymore and just want to start over from scratch basically. I did a time machine ...
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1answer
149 views

Editing Partition

When trying to edit a partition on my hard drive, Disk Utility says: Couldn't modify partition map because the file system verification failed. So I booted into single-user mode and typed in: ...
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1answer
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Does using “rm” command cause journaling corruption?

Some time ago I had some problems with my Mac drive, so I went to the recovery partition and used Disk Utility to check for problems. It reported a huge discrepancy between the journaled free blocks ...
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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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1answer
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Why won't Migration Assistant recognize my old Time Machine backup?

When I attempt to run Migration Assistant, it searches and searches but can't find the backups. When I open Finder, I can clearly see the backups and navigate around in the backups for the different ...
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230 views

OSX 10.7.5 renaming attached Firewire drive

My Mini was running out of disk space, so I attached an external Firewire drive and moved all the Home directories (a bunch of users on a home machine) to it. I'm pretty sure that was done correctly, ...
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34 views

Software to allow saves to external drive when it's not present?

I'm wondering if software for this purpose already exists. What I want to be able to do is to be able to save to my external drive when it is not connected to my computer. By this I mean I want the ...
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1answer
317 views

Reading a Mac IICi and SE hard drive on another computer

I have a Macintosh IICi and SE hard drive. My understanding is both are SCSI. I know one of the two is a Quantum P40S (the one from the mac IICi) I also have a PowerMac G4 that works very nicely and ...
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193 views

Is there a way to boot on iMac from usb using a different OS and access osx files to back them up

I am having issues starting up my iMac. I would like to know if i create a bootable usb with Ubuntu or any other OS, would i be able to boot with it and access the OSX drive? I able to do this in ...
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4answers
258 views

How do I temporarily relocate my Time Machine backup files

I have a 1TB WD My Passport external hard drive that I've been using for Time Machine backups. I recently had an issue with it where I can't save to it anymore because it was corrupted. The way to fix ...
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1answer
8k views

Macbook crashes at startup after process bar appears

Today the Macbook pro I purchased in December got quite slow, and so I decided to reboot it. I restarted it normally through the system, but it had not started up when I checked few minutes later. ...
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3answers
3k views

Will upgrading Mac Mini hard drive void AppleCare Warranty?

After purchasing a Mac Mini, I wanted to replace the hard drive from a 5,400 rpm hard drive to a 7,200 hard drive. Will this replacement void my AppleCare warranty?
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How to upgrade hard drive in Mac Mini

I recently bought a new mac mini (my first mac ever yay) with a 1TB hard drive at 5,400 rpm. the guy at microcenter also sold me a 1TB hard drive at 7,200 rpm and said it shouldn't be to hard to ...
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In Disk Utility, what advantages do “read/write disk image”s have over “sparse bundle disk image”s?

If I want a read/write disk image, then aren't sparse bundle disk images always the way to go? They start at 0 kb in size, and grow to accommodate whatever you add to them, and if you delete stuff, ...
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258 views

How do I copy an NTFS partition to a writable disk image?

I have a drive from an old Windows computer. The drive is now in an enclosure, so it's accessible as if it were an external drive. It is formatted as NTFS. I would like to convert this drive (about 50 ...
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533 views

Mac OSX - Install Failed

The hard drive went on my late 2008 MacBook Pro so I replaced it. I tried installing 10.8 from a bootable USB which failed so I went back to the origional system disks. When I tried to install OSX ...
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Unable to transfer files from external hard drive

Problem: I'm trying to transfer about 168 GB of files from an old Windows XP machine to a newer MacBook Pro running OS X 10.6.8. I successfully copied the files from the XP machine onto a 2TB ...
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How to deactivate Adobe CS6 install on a damaged/corrupt mountain lion OS hard disk?

I have tried running the disk utility repair tool on my Mac OS HD to no avail. So I moved on to backing as many files (Documents, iPhoto Library, Desktop Data etc...) as I could through my Windows ...