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

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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 ...
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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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6answers
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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 ...
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3answers
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My external disk made a clicking noise. What should I do?

I have a USB2+Firewire external disk that made a clicking noise, and Mac OS X immediately unmounted it and put up a dialog box saying that a peripheral is misbehaving. The disk made a clicking noise ...
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2answers
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Can I use TimeMachine with a Thunderbolt hard drive?

The Apple technicians told me that I needed a specific device to use Time Machine... namely a wireless device that had a relatively small hard drive. Since I use Oracle Virtual Box and have very ...
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2answers
242 views

New Larger Hard Drive on MacBook Pro

I have a 500 GB hard drive, and I need more space - I want to go up to 1TB of space. Is it possible to swap out hard drives and carry all my installed software, documents, images, settings, etc. ...
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21k views

How do I make the hard drive visible in the Finder?

On OS X Lion I don't see the hard drive in the Finder and I seem to have no permission to create a folder under / from terminal. I know I can do this if I activate the root user, but I need to be ...
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2answers
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Cannot Unmount Mac OS X Base System Disk

My Mac running Lion was being slow, so I was decided to reinstall OS X. I don't have any Time Machine backups. Everything went file, but in the middle of the installation, it got stuck, and later the ...
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How to make my iMac recognize my USB external hard drive?

I just bought a new Seagate hard drive for Time Machine backups. I plugged it into my iMac and the hard drive never showed up in Finder. The drive does not appear in Disk Utility and the command ...
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How much faster is the flash storage on the MacBook Air than SSD?

I heard that the flash storage in the MacBook Air is faster than SSD since it doesn't need to go through a SATA interface. How much faster is the MacBook Air's hard-drive compared to a traditional ...
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What is an SSD drive's negotiated link speed?

When I look at my Apple SSD TS256C (Toshiba) in the System Profiler on my MacBook Pro (Late 2011), I see: Link Speed: 6 Gigabit Negotiated Link Speed: 3 Gigabit Why is that? Does that mean ...
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Swap Hard Disks

Is it in principle possible to swipe the hard disk out of a MacBook, swipe a new (blank) hard disk in, install the OS on the new disk, then swipe the old disk back in and find the machine operational ...
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1answer
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Does Time Machine need a “clean drive”, or can I use an old hard disk

I want to use Time Machine on my Mountain Lion. I have 1TB external HDD I use for storing various stuff. The thing is I selected the drive for Time Machine to work on but nowhere it is mentioned ...
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3answers
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Why does RAID 1 “Mirroring not provide performance improvements”?

I have always used Software RAIDs, either Apple-provided, or via SoftRAID, etc. I am about to re-zhuzh my arrays and decided to do a little research beforehand… and On Apple's site, there is a ...
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1answer
590 views

Internal drive on MacBook won't appear on desktop

Why doesn't internal drive appear on desktop after a fresh install of Snow Leopard 10.6.8?
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3answers
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Is USB 3.0 overkill for Time Machine hard drive?

I have two 500 Gb hard drives. One is USB 2.0, the other is USB 3.0. My intention is to use one of these hard drives for Time Machine, and the other for storing media files on (mp3s, mp4s mostly). ...
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1answer
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JDiskReport is damaged, can't be opened

I have tried downloading and running JDiskReport 1.4 a few times now, and after unzipping it and clicking on the executable I get the message: "JDiskReport" is damaged and can't be opened. You ...
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1answer
3k views

Can I move Applications to another partition?

My Startup disk partition is just 20 GB and I'm running out of space. What's the safe way to transfer Applications folder to the other partition? Can I just move all apps into a folder on the other ...
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4answers
362 views

How can I automatically have my Trash emptied when disk space gets below a certain point?

Sometimes my hard drive gets low on space, and various things don't work properly until I empty the Trash and free up some space. I know there are applications that empty the Trash after a set ...
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1answer
226 views

Is it safe for the hard disk drive to operate while MacBook Pro is positioned vertically?

There is a nice designed product: Twelve South BookArc. You can save some space and increase wow-factor of your workspace a bit. But is it safe for HDD to operate a Macbook when it is not parallel to ...
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3answers
691 views

Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...
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3answers
5k views

Recovering data off of a dead hard drive

My hard drive died in my macbook and it no longer will start up. It will not mount in an external enclosure but disk utility is still reading that the hard drive is there, and I tried to repair disk ...
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4answers
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How to find where files reside on a partition

I'm trying to use Bootcamp to install a Windows partition. But it gives this error message. I remember there was a program that let you see where all the files are on the partition and how much ...
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1answer
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How to coerce Lion Time Machine into offering backup history migration?

This article describes a feature I heard about from multiple sources about an automagic backup migration process that Lion will do for you. Essentially, when migrating to a new machine, you can ...
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2answers
330 views

SSD instead of DVD temperature

just installed Intel 320 instead of DVD in Macbook MC516LL. Does old DVD place is equivalent to standard HDD place in Macbook from temperature (thermal) perspective?
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Make SCSI Appear as Internal Hard Drive

I have the HighPoint RocketRAID 2720SGL Raid card running on my Mac and it shows as an external drive. I would like to make it appear as an internal drive. Is this possible? From: To: Here ...
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1answer
104 views

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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1answer
315 views

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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1answer
497 views

Fusion Drive: free space on SSD

Is there a possibility to find out how much storage is free on a SSD of a Fusion Drive disk (SSD + HDD as a logical device)? The structure I use is this one here: $ diskutil list /dev/disk0 #: ...
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1answer
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prevent second hard-drive from spinning up after standby

I have a MacBook Pro with two harddrives, an SSD in the main slot and a larger, normal drive in place of the superdrive. Because of power consumption and noise I managed to get my Mac to not ...
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2answers
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How to load windows 7 directly (without Boot camp) in a Mac Mini with intel processor whose Hard disk crashed and so is replaced?

The hard disk of my Mac mini with 2 GHz intel processor and 4 GB RAM crashed and so I have replaced the Hard disk. How to load Windows 7 without loading Boot camp? Windows 7 original DVD is not able ...
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How can I test if my hard drive is going bad?

I've looked over similar questions and searched the internet to try to find symptoms of a bad hard drive, but I haven't found anything that seems to be related to my problem. I have a late 2008 15" ...
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Can I install OS X lion on a disk that is OS X Extended Journaled encrypted?

Just wondering if I can, using Disk Utility, format the hard drive such that it is OS X Extended (HFS+) Journaled encrypted. Will Lion be able to install on that disk?
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Mounting a “Mac OS Extended (Journaled, Encrypted)” drive formatted in Lion on either Mac OS X Leopard or CentOS 6

I formatted a Seagate FreeAgent external hard drive on a system running OS X Lion (10.7) as "Mac OS Extended (Journaled, Encrypted)". Everything works great on the Lion system. However, when I try ...
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4answers
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How can I add some SSD goodness to my MBP?

I have a decently modern (late-2010) Macbook Pro, with a 7200 RPM 500GB HD. I need this much space, but I'd like to have an SSD for compiling code, running the OS, and running games. Is there any way ...
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1answer
506 views

Is it possible to use Time Machine on a shared USB Hardrive?

I've a iMac with an external HD derserved to Time Machine. I also have a MacBookPro. Is it possible to make this config : Share the disk on the iMac so that the MBP sees it on the network Ask Time ...
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1answer
511 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
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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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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
534 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
216 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
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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
427 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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“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
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Encrypted external drive always prompts for password, despite being in keychain

I have an external encrypted drive, and every time I plug it in, it'll ask me for the password, even though it's already in my keychain. If I type the password in, it'll mount as expected. Oddly, if I ...
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2answers
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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
229 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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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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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 ...