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

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3
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2answers
5k views

How can I reformat my hard-drive?

I am in Disk Utility under the Erase Tab. The Format section is grayed out even though I have my main disk selected. The only buttons active are Erase Free Space, but I want to reformat the entire ...
1
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2answers
103 views

Drive does not stay mounted

I created an encrypted RAID 0 disk following Why doesn't FileVault work on a RAID volume? on a WD My Passport Pro $ diskutil cs createLVG TimeMachineLVG disk5 Started CoreStorage operation ...
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0answers
266 views

Apple Hardware Test result: 4HDD/11/40000000: SATA(0,0). But repaired Disk and Permissions w/o a problem

Ran an Apple Hardware Test. Result: 4HDD/11/40000000: SATA(0,0). Then repaired Disk and Permissions. Result: Volume appears to be okay. But during use, sometimes it freezes randomly and my MBP ...
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3answers
128 views

MBP Late 2011 15" Windows 10 Installation Problems

Just two days ago, the machine had a Windows 8 partition on it, but it was full of malware slowing it down and hurting it. I backed up all important files and formatted the drive, so to install ...
2
votes
2answers
3k views

How do I keep the Recovery HD and EFI partitions from automatically mounting on my MacBook Air?

I've set Finder preferences on my MacBook Air running OS X 10.9.1 to show everything on my desktop: I've noticed that storage partitions called Recovery HD and EFI appear there: What are they? ...
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0answers
36 views

How to exclude everything from TimeMachine backup except one folder

TimeMachine backs up all my mac and also if I have external hard drives will back them up too. My goal is to add some general exclusion list that basically stops it from backup my mac and ONLY want ...
0
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1answer
19k views

My macbook air wont let me erase my disk?

What the title says. I'm trying to delete all the data off my macbook air. I pressed command+r, went to disk utilities, selected my disk in the slot to the left, went to the erase tab. The "erase" ...
0
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1answer
28 views

Time Machine offers to erase disk data (format), will it delete all my partitions?

So, I'm trying to perform my Macbook backup on my 3TB drive. This drive is currently has a GPT table with 4 partitions: BackupMain BackupKubuntu BackupWindows BackupMac Before BackupMain, there ...
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0answers
32 views

My SSD just disappeared

I have a mac mini, with two ssd, both internal. They worked fine for over a year. The secondary (not system) ssd has just disappeared. While I was copying a folder on it, a popup appeared, saying it ...
0
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0answers
268 views

How can I eject my external Time Machine hard disk attached to a MacBook Pro?

I used the external hard disk with Time Machine for the first time. After that when I tried to eject the disk, I got a message saying that it can't be ejected because it is being used by some ...
0
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0answers
21 views

Installed SSD in Macbook Pro 2011 and now the DVD player won't read disks

I just installed a SSD (Crucial MX200 2.5" 500 GB) into my late 2011 Macbook Pro (running 10.8.5). The DVD player will accept a DVD (which works fine on another computer so it's not the DVD), and the ...
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1answer
26 views

Corrupt Time Machine

I have an external disk partitioned in three /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *1.0 TB ...
1
vote
5answers
154 views

Move HDD from a MacBook Pro (Mid 2012) model to another MacBook Pro (Mid 2012) model

I have a HDD from MacBook Pro (Mid 2012) model: OS: Yosemite; The content in the HDD is important to me. I want to know If I can buy a MacBook Pro of the same model, Mid 2012, and simply hook the HDD ...
0
votes
1answer
30 views

Convert case-sensitive HDD to journaled insensitive?

Like everyone, I've search everywhere in the web about getting my brother's HDD converted to case-sensitive journaled. I have a back up HDD that I can transfer to, I have no idea why iPartition is ...
2
votes
1answer
981 views

Remove disk image from the disk list

In Disk Utility I see two disk images (Flash Updates) But I cannot find where the image file could be. On the console with diskutil I see /dev/disk2 (disk image): #: TYPE ...
0
votes
1answer
793 views

How do I save iCloud photos to external hard drive?

Photos on my iPad are backed up on iCloud, but as my iCloud storage is full I want to back up my iCloud photos to an external hard drive. How do I do this on my Windows desktop PC? I do not have a ...
2
votes
2answers
137 views

External hdd: Difference “Get Info” Available space and "About This Mac - Storage

OS X El Capitan. I have seen this thread, and it explains a bit (different reporting units), but there is an additional substantial discrepancy in the free HDD space of an external HD reported: Get ...
-1
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1answer
114 views

Something is constantly eating my hard disk space [duplicate]

Something is constantly eating my hard disk space. This pattern happens very often: I free some space by deleting stuff (5-8 GB) In about half an hour I have 0 (zero) free space I have not ...
2
votes
2answers
103 views

Cloning Macbook Pro HD to external HD and still using it

I am still on Mavericks and want to upgrade OS X, but since I use a lot of audio apps, plugins etc that would break - I am looking for a way to clone my entire Macbook Pro 1TB SSD as it is right now ...
2
votes
5answers
45k views

I can't write to my flash drive, and it is already in the MS-DOS (FAT) Format. Why?

This is my first question on this website. I am using a Mac Air, and I have a flash drive in which I can read from. I am able to copy files from this onto my Desktop, or anywhere on my computer for ...
1
vote
2answers
886 views

What is the largest hard drive a Mac Pro 3,1 (early 2008) will support?

What is the largest internal hard drive a Mac Pro 3,1 (early 2008) can support? I read here that it's around 1.2 TBs is that correct? Also I plan to run Proxmox on it, not Mac OS X (well, I might ...
0
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2answers
29 views

I have an SSD installed on a mac I do not use, how do I use it on another desktop?

Do I have to format an SSD from OS X in order to re-use it on an Windows desktop? Or Is there no limitations to where to format the drive?
36
votes
7answers
116k views

Is it safe to delete ~/Library/Caches?

Is it safe to delete the file Caches, in the Library of the Mac OS X Hard Drive? It's a pretty big file, 3.56 GB, Caches reminds me of logs i don't need or browser cookies. Is it safe to delete the ...
31
votes
3answers
19k views

What are the differences between journaling HFS+ and non-journaling HFS+?

I'm about to format an external hard disk drive (HDD). What are the key differences between journaling HFS+ and non-journaling HFS+? Apart from the fact that one has journaling and the other does ...
0
votes
1answer
30k views

How to recover my harddrive if I can't see it in the disk utility

I have a 2007 aluminium iMac which I upgraded months ago to Mavericks. Today it locked up and I held the power button to shut it down and cannot get it to start again. I get the flashing folder ? icon ...
0
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1answer
612 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 ...
0
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1answer
463 views

Can't encrypt external hard drive

I'm trying to encrypt an external drive of mine using Apple's built in drive encryption tool into OS X through Finder. The drive is formatted as Mac OS Extended(Journaled) and I'm plugging the drive ...
0
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0answers
23 views

Partition problems - No LVG detected in Terminal after BootCamp Erase through Disk Utility (I know, I messed up)

I'm very stuck trying to get my system to recognize a full HDD and run Yosemite cleanly after a poorly-executed BootCamp removal. Here's the steps in the process so far: I erased a Windows Partition ...
2
votes
2answers
67 views

Replacing hard drive in Macbook late 2009 what do I do about osx?

I'm replacing the hard drive in my 2009 macbook (13" unibody). How do I go about installing OSX and can I go straight to Yosemite or do I have to install Mavericks and then upgrade? It's my first ...
0
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0answers
41 views

Time Machine backup not progressing

I'm experiencing issues running backup on an external encrypted USB 3.0 HDD. The backup starts and stop proceeding random. I'd tried to wait many hours without any progress. For example in these ...
1
vote
1answer
94 views

Internal vs. External Storage for a new Macbook

I want to get a new MacBook pro, and am confused by the storage options. The Apple website offers 2 different options for storage: 1) Preinstalled internal flash storage (256, 512, or 1 TB) 2) ...
0
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1answer
31 views

Terminal command ls/cd not finding any files on external harddrive

I'm having a bit of trouble with my external hdd and terminal. I've been able to access files on it via terminal in the past, but since I upgraded to El Capitan I can't seem to find anything on my ...
11
votes
3answers
50k views

How can I delete a partition (coreStorage logical volume?) from the Terminal?

I finally understood why Disk Utility will not change the partitions on my HDD, even though I added the most recent one myself (maybe significant: to test Yosemite DP) with it. Now I see it says it ...
3
votes
3answers
5k views

Clean install of Yosemite problem

Hopefully someone can help me. I've tried so many options. I purchased a used MacBook Pro, late 2011 model. The person I purchased it from said he wiped the hard drive, but when I got home, it seems ...
0
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0answers
25 views

new Hd and shuts down iMac 2010 mid 27 inch issues

HD died, read tutorial, installed new Hd connector position was not closely monitored on restart fan was loud had time machine back up (old by 2 months ..i know...) downloaded a fan control app (?) ...
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0answers
22 views

Macbook booting up in Recovery Partition by default after dual-SSD/HDD

I've installed a SSD, and cloned my earlier HDD OS X to it using Carbon Copy Cloner. Now, whenever I boot-up, the MBP by default boots to recovery partition. How do I correct this? How do I ensure it ...
0
votes
2answers
29 views

Swapping internal hard drives

I have a mid-2012 MacBook Pro into which I had installed an OWC data doubler SSD (removing the optical drive). I originally placed the SSD in the original HDD bay and moved the HDD to the data ...
1
vote
1answer
816 views

Mount external HDD readOnly option

I have the following problem: I used the optical bay to use a HDD in my mid 2010 13" Macbook Pro in addition to my SSD. It was working just fine until a few days ago, when it started to get "slower". ...
2
votes
1answer
183 views

Reformat exFat with specific Device Block Size and Cluster Size

I have an 512 GB SSD on my MacBook Retina with one of the volumes disks0s6 formatted with exFat to use it on both Mac and Windows. diskutil info disk0s6: Device Identifier: disk0s6 ...
0
votes
2answers
40 views

I need administrator password for file management on external hard drive

So I have an external hard drive, my passport, that used to be a Time Machine, but now I use for basic file storage. Whenever I try to add a folder, or manage files, it asks for an administrator ...
1
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0answers
29 views

How can I issue a S.M.A.R.T. Enhanced Security Erase command to a HDD?

I have multiple hard drives that I need to erase before selling and some before going in the trash due to bad sectors. I'm not fond of software level data erasing (Disk Utility, DBAN, DD, etc) as it ...
0
votes
1answer
36 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 ...
1
vote
1answer
60 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 ...
1
vote
3answers
1k views

Disk structure error reported in Onyx but not fixable via the Disk Utility in Recovery Mode

On Yosemite 10.10 Onyx returns the following error: Error: -69845: File system verify or repair failed Underlying error: 8: POSIX reports: Exec format error The disk needs to be repaired. I ...
1
vote
1answer
55 views

MacBook Pro 2012 Model A1278 Flashing questionmark file

My Mac started off by giving me the spinning ball of death for an unreasonable amount of time so I caused a force shut down (I know, unwise) and tried to restart it. Came up with the file error. I ...
0
votes
1answer
64 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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2answers
108 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?
0
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0answers
53 views

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 ...
1
vote
3answers
207 views

Use external hard drive to install applications to it

I have a 120 GB SSD on my Mac and it is almost 90% full. I have another 500 GB external hard drive and I want to install some big applications to that hard drive so it does not occupy space of SSD. ...
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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 ...