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

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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 ...
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1k views

9GB com.apple.coresymbolicationd file in Caches

I'm trying to free up disk space, and I came across this: I've read reports of a 600M file, or a 1GB file but never something like this. Is it safe to delete or does rebooting frequently help ...
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1answer
1k views

backing up an OSX image to an NTFS drive?

I would like to make an image of my entire OSX install, so that I may restore to it if necessary. I'd LOVE to have incremental backups, so bonus points if anyone can figure out how I can do this! ...
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1answer
642 views

Is it a good idea to seal off the optical drive bay after installing a second HDD?

When installing a HDD instead of the SuperDrive: Does the bracket, which holds the HDD, seal off the optical drive slot in the unibody? If not, it seems that debris and dust could get in. (I guess ...
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2answers
1k views

Can I use an HFS+ usb disk with encryption enabled with a Time Capsule (2TB is mine)

I have a 2TB Time Capsule (version 7.6.1) and I want to connect a USB disk formatted as HFS+ with encryption enabled (on MAC OS X Mountain Lion). When I connect it directly to my iMac, it asks for a ...
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2answers
130 views

iBook G4 opening procedure (for hard disk replacement)

I am about to replace the hard disk of an iBook G4 (a 12" 1.33 GHz model) with a SSD. The guides I find online, such as this one, describe a rather long procedure where both the bottom and top covers ...
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2answers
611 views

Why is Outlook 2011 constantly writing to my hard disk?

I recently installed a hard disk write monitoring program (MenuMeters), and for some reason it was reporting that my drive is constantly being written to. By closing programs one at a time, I've ...
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2answers
225 views

Occasional system hangups after upgrade to Lion: is it a disk or software problem?

I have an 13 inch MacBook unibody Alu (early 2009, before they started to be called MacBook Pro) that I use every day for many hours (it's my work and life computer). Few weeks ago within few days I ...
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1answer
62 views

Is there a way to monitor which disks are spun down in a Mac Pro?

I have an 2009 Mac Pro full of disks, most of them seldom used (boots on a SSD). Is there a way to see which disks are spun down at a given time (currently running 10.6.8)?
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3answers
949 views

RAM Disk gets unmounted when coming out of sleep

I have a script set up to create a RAM Disk at login. But I have now noticed that the RAM Disk (And sometimes other networked disks) get unmounted when I put the laptop to sleep and wake it up again. ...
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1answer
439 views

Synchronise/Merge MP3 collections without duplication or huge copies

I have one drive containing about 90GB of MP3s which is used at home, it serves three Squeezebox players though the Slimserver software running on one of the desktop Macs. I have a separate firewire ...
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2k views

“Not enough space” on partitioning?

I have a 320GB harddrive with 95GB free. I boot to a 10.5 disk, open disk utility, and add a 40GB partition. Halfway through the progress bar, though, it tells me that there's not enough space. I'm ...
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1answer
39 views

How can I log OS X Server disk performance?

I know Activity Monitor exists to view disk i/o and other performance metrics. However, does Activity Monitor have the ability to log any of these metrics? If not, how can I log these metrics into a ...
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2answers
1k views

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
262 views

Can hard-drive benchmark apps damage your hard-drive?

I want to measure the read/write speed of my hard-drive. I came accross this page recommending Blackmagic Disk Speed Test. There is a frame saying this: Note: Blackmagic Disk Speed Test puts hard ...
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2answers
2k views

Mac Hard Drive Testing Tools and SMART Analysis

How good is SMART (Self Monitoring Analysis and Reporting Technology) for really finding and predicting drive problems for regular hard drives and now, for SSDs. From what I understand, different ...
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1answer
462 views

Time Machine wiped my external drive despite pressing “Don't Use”

I have an external hard drive(formatted as FAT32) that has been in use on/off for years. I even had backups on it (not using time machine). I mounted this hard drive, it was taking a while to mount. A ...
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1answer
3k views

MacBook SSD replacement — sudden motion shock sensor in optical bay?

When looking to upgrade a MacBook Pro with a solid state drive (SSD), one option is to: First, install the SSD instead of the spinning hard disk drive (HDD). Then, install the HDD instead of the ...
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1answer
924 views

Macbook Pro early 2012 SSD retire block count

I've recently bought an OCZ Vertex3 480 GB SSD (VTX3-25SAT3-480G) for a drive upgrade. This is what I did after I purchased the drive: Backed up my system with Carbon copy cloner Installed the SSD ...
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3answers
707 views

Should I Move The Swap Location For My Mac From The SSD To The Larger HDD In My Laptop?

Should I move the swap location for my Mac from the SSD to the larger HDD in my laptop? Background information: I've heard some suggestions in the general PC/Windows world that if you have an SSD for ...
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1answer
684 views

Disk utility on Mac and free space dispatching

I have a physical hard drive that is split into 3 partitions. The second partition is running out of space and I want to give it some free space that I have on the third partition. While, this is ...
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1answer
112 views

Is it possible to have dual internal hard drives in a 2009 mac mini?

I want to have an SSD for the OS, and the existing disk that came with the unit. Is this possible?
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1answer
3k views

Why won't disk utility let me remove a partition from my external hard drive?

I have an external 1.5 TB hard drive split evenly with a partition for backup and a partition that was used for Time Machine on my previous computer (OS X Lion). Now I'm using this hard drive with a ...
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2answers
334 views

Boot up error prohibitory sign flashing folder with question mark

3 weeks ago my hard drive failed so I bought a new one. (Macbook pro late 2011) 5 days ago, the new one flashed prohibitory sign, flashing folder with question mark. Every once in a while I could get ...
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190 views

Disable USB Write Caching by default

Is it possible to change OS X's USB filesystem mount behaviour to use the noasync flag to disable write caching? The aim here is to allow USB devices to be safely removed without eject or hdiutil ...
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2answers
172 views

How to comprehensively benchmark SSDs on OS X?

I want to benchmark my SSD under different circumstances. Connected through USB3, Thunderbolt and internally (S-ATA). Unfortunately I can only find benchmarks which concentrate on measuring read and ...
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1answer
208 views

Backup external hard drive to the cloud via Time Capsule

I'd like to move my photo directory to an external hard drive, but still have that hard drive backed up both locally and to the cloud. This wouldn't be a problem if I was using a desktop machine of ...
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1answer
440 views

Can I Mount a Hard Drive in Mac Pro Tower as Read Only?

I'm trying to recover data from a failed external Fantom RAID Drive enclosure by plugging the drives into a Mac Pro tower, but I'm concerned that OS X might write to the disks and jeopardize the RAID ...
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1answer
255 views

What do I need to know to buy an SSD drive for a 2008 MacBook 5,1?

I'd like to buy an SSD drive for my MacBook aluminium (MacBook5,1 from 2008). What do I need to know to buy one which will work fine with it? I.e. years ago any IDE drive would fit any IDE slot, but ...
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1answer
461 views

Mac disk free space automatically decreases

I am running Snow Leopard (10.6.8) on MacBook Pro. A few days ago I found my free disk space is too low, so I tried to clean un-necessary files form disk myself and using some programs like ...
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4answers
5k views

What hard drive is used for the 500 GB Macbook Pro option from Apple?

I'm looking to replace my Macbook Pro 13" hard drive. I tried upgrading to a Seagate Momentus XT 500 GB, but returned the drive because it caused the palm rest to vibrate when pressed (I installed ...
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3answers
225 views

An endless supply of 1's for securely overwriting and erasing a disk

I vaguely remember hearing about disk wiping, and that you have to flood the disk with zeros, flood it with ones, flood it with random data, and repeat this quite a few times. This is just a general ...
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369 views

Chances of getting my harddrive recovered

I accidentally placed a magnetic mount antenna near my hard drive while my computer was running. It then made horrible noises, and stopped working, and everything froze. Now, every time I start my ...
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2answers
1k views

Hard drive read only access with Mac

I have an external usb hard drive that I used to connect on my old PC laptop. There are some files I created with the laptop on this hard drive. Now, I can only read those files with my Mac notebook ...
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4answers
38k views

MacBook Air: What taking up all my hard drive space [duplicate]

I have a 128gb MacBook Air running Lion. I am constantly having issues with disc space, but have no idea what is consuming it all. When I look at the disc utility break down, it says about 80% of the ...
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4answers
8k views

Is there a utility for mac that shows the information of an SSD like the health etc…?

I am wondering if there is a utility for the mac that allows you to see the details of an SSD like the health of the drive, TBW (total bites written), how many running hours etc... In researching for ...
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5answers
5k views

Is my MacBook Pro hard drive dying?

I have an early 2011 13" MBP, i7, 8GB crucial RAM, 500 GB Seagate ST9500325ASG. I've had it for about 4 months. Twice, including last night, the beach ball appears, concurrent with a sound that can ...
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4answers
5k views

What can I do to check the integrity of the hard drive and all its files, to see if they are corrupt or not?

Recently there has been some files disappearing (in iTunes), and I'm not so sure of the extent of this problem yet. Perhaps it may have been an iTunes upgrade bug, but I'm not so sure. What can I do ...
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2answers
153 views

How to create a second partition on an external disk and is it safe?

I want to create a second a partition in my hard disk where one (about 900 GB) is used for Time Machine and another (100 GB) is used to store info like a thumb drive. I don't want any existing data ...
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5answers
3k views

Attaching 3.5" desktop drive to MacBook SATA

I have a mid-2007 MacBook that, according to the Apple Store, has suffered some liquid damage and requires a new logic board to operate correctly, a ~$750 repair I've been told (would normally be ...
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2answers
2k views

“Winclone has been discontinued”. Now what?

I just replaced my old 320Gb HHD on my MBP with a 240Gb SSD and I did not wanted to transfer the hole drive as it would not fit, as I have more than 60Gb of music and 110Gb of Photos and HD Videos. ...
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2answers
328 views

If I take the hard drive out of my macBook Pro and put it in a non-apple laptop, will it boot?

I've just upgraded my (2011) macBook Pro to use an SSD. So I've now got an old hard drive laying around with OS X on it. I've also got an old HP laptop laying around. If I put the drive in the ...
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2answers
312 views

How can I get my laptop's existing system onto a new replacement drive?

I'm planning to swap out my early 2011 MBP's drive for a larger capacity one. I'm running Mac OS 10.7.5. I have available a 1 TB external USB-connected drive that I'm using for Time Machine backups. ...
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2answers
987 views

How to copy all files with extension/filetype in terminal?

I want to copy all files in ~/Desktop with the extension .jpeg to my flash drive. How can I do this in the terminal?
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1answer
307 views

Does mounting a large disk image require a certain amount of free space on the internal drive?

I've got a bunch of Mac disk images (.dmg files) that are 100 GB or larger. I'm currently on an iMac with a few hundred gigabytes of free space, but I'm going to be moving to a Mac laptop with 128 GB ...
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1answer
71 views

How can I recover the key of an encrypted hard-drive?

I still have access to the disc, but I lost the piece of paper with the key. Can I somehow recover it? I already had a look into Keychain Access Utility, but I couldn’t find it.
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2answers
2k views

Is Other World Computing's 1.5TB Toshiba Aquarius laptop hard drive legit?

I have pretty high storage needs, which are constantly increasing. Fortunately, the largest drives available seem to be scaling with the amount of space I can occupy. The 1TB disk I currently have ...
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2answers
2k views

Is it true that any external hard drive made for the PC, can be used by a Mac running Lion?

It seems like Lion supports NTFS (by plugging in a USB Flash drive which is NTFS). So for hard drives such as the WD Passport or Toshiba 1TB, which are made for the PC (running Windows XP/Vista/7), ...
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2answers
742 views

16, 32, 64 GB iPhone / iPod touch: are there any negative effects of size?

I am debating between purchasing the 32 vs. 64 GB iPod touch. I would lean toward a smaller hard drive if there is an effect of size on speed or battery life. Aside from cost, are there any reasons ...
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2answers
5k views

Which SSD to choose for a white late 2009 macbook [closed]

Currently there are many reviews on SSDs, and different types of SSDs as well. What I would like to hear is what cost effective SSDs that exists that aslo has TRIM support and will work well with ...