Questions tagged [hard-drive]

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

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12
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2answers
8k views

kernel_task filling up disk

Something weird just happened. I got a warning that my disk was running out of space. I knew that it had like 15GB free before and wondered where all the free space went. I checked Activity Monitor ...
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10answers
23k views

Error creating bootable USB

For two days my Mac has been "dead"; the hard drive crashed, so I reformatted (twice). I wanted to reinstall Mavericks via Recovery, but at the end of the process it shows nearly 1 million minutes ...
11
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2answers
13k views

Is File Vault 2 whole disk encryption or whole partition encryption?

Can I use File Vault to encrypt only some of the partitions on my disk (so that I can still have unencrypted and Windows partitions on the same disk), or does File Vault encrypt the whole disk so that ...
11
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2answers
7k views

Will I damage my HDD if I transport my MacBook in sleep mode?

Is it safe to carry MacBook with HDD in a bag while it has been put sleep? I.e. I know there are some risks of hard disk drive damage if one tries to shake them or rotate them while they're working. ...
11
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4answers
103k views

What is the best free hard drive diagnostics app for Mac OS X?

My MacBook Pro (described below) fell 5 feet while it was powered on. Would the sudden motion sensor be able to turn off the hard drives in time? Also, can anyone recommend the best (free) hard drive ...
11
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1answer
98 views

Is it possible to have 2 different backup systems for different external hard drives?

1) I want to plug in an external hard drive and then download all of the photographs that I take in RAW format on my Canon 7D camera onto this external hard drive, and then backup these photos onto a ...
11
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1answer
29k views

Why is exFAT so slow on Mac?

I tried exFAT in order to use my external hdd on both mac and windows but I found it's so much slower than HFS+. The speed is noticeably different when I tried to fast forward movies (over 4gb). ...
11
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2answers
2k views

How to wipe an iMac that can't be turned on?

I have a 2008 model iMac that just can't be turned on. When it died, it shorted the house's fuse with it. Is there any way that I can wipe out the hard drive (without much effort) before throwing it ...
11
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1answer
4k views

After enabling File Vault, OS X doesn't mount disk automatically anymore

I have an external 2 TB LaCie drive connected via FireWire 800 to my MacBook Pro (8,2 – early 2011 model), which runs OS X 10.8.5. It has one big partition which is a Time Machine target, and the ...
11
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1answer
55k views

Force mounting an external disk that is not recognized

I recently bought a 4Tb naked (no enclosure) external hard drive that I mount via a Newer Tech dock (the ones where you insert the naked drive like bread in a toaster) and is connected to my MacBook ...
10
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7answers
3k views

What are the best disk cloning tools?

Money is no object. I want a bit for bit perfect copy of a hard drive/partition which is bootable (is either possible) to be used in a backup regimen. I have heard of some tools but your ...
10
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3answers
16k views

How can I upgrade MacBook Pro disk space?

I have a fairly new MBP with a 256 GB SSD. I am running out of disk space now. Most of it is being used by Pictures and Music and I have done all the cleaning I could. What's the best way to upgrade ...
10
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3answers
21k views

How do I encrypt an external drive with FileVault 2 in OSX Yosemite

Ok, so according to https://www.apple.com/osx/what-is/security/ I should be able to encrypt ANY external drive..."with ease" using FileVault 2. I have a brand new (empty) 2TB Fantom Drive model: ...
10
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3answers
6k views

What happens when you remove (or lose) the SSD from a Fusion Drive?

After storing data on a Fusion Drive, is it possible to downgrade your Mac to use the hard drive (HDD) by just removing the solid state drive (SSD)? In particular, I was wondering what happens when ...
10
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1answer
4k views

Prohibitory sign on boot after Sierra update, can't mount disk anymore

A few days ago I decided to update to Sierra from El Capitan on both the disks on my MacBook Pro (mid 2012); the update on my SSD went without a hitch so I decided I'd update my other disk, too. I ...
10
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2answers
648 views

Time Machine wants 4.50 PB to backup 266.14GB

I'm currently unable to backup via Time Machine, as backups fail with the following error message: "Time Machine couldn't complete the backup to "Time Machine"". "The backup disk needs 4.50 PB for ...
10
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1answer
7k views

Extremely slow write speed to encrypted external drive on Mavericks

Writing to a fully encrypted USB flash drive on Mavericks is extremely slow. The drive model I used for testing was a Kingston DataTraveler Ultimate 3.0 G3 (64 GB). I tested transfer speeds by ...
10
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1answer
353 views

Moving Time Machine backup between two local disks results in full backup instead of incremental

The Problem After migrating the entirety of a a Backups.backupdb to a new hard drive as recommended by Apple by simply copy-pasting within Finder between two local disks, Time Machine encountered an ...
9
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4answers
2k views

Can I re-format OS X drive without removing it from my MacBook Pro?

I've got a mid 2012 MacBook Pro (non-retina) with a removable HD (Machine A). I want to perform a clean install of OS X El Capitan 10.11 on the HD, for which I have an install USB stick made. ...
9
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10answers
16k views

What is the benefit of using flash memory in the Macbook Air?

I don't understand why Apple does not use SSD drives in the Macbook Air like some other manufacturers to (e.g. Asus, Samsung). The technical specifications of the Macbook Air on Apple's website never ...
9
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9answers
114k 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 ...
9
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2answers
9k views

How can I make my computer believe a disk image is a hardware disk?

I'm trying to do some research on TimeMachine right now. I don't want to purchase an external hard drive, just to learn about some software, and so I'd like to be able to tinker with the settings, by ...
9
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4answers
2k views

Which process is periodically writing to the disk?

Even when I am not doing anything on my Mac, I see a lot of Disk IO: "Data Written per Sec" in Activity Monitor showns continuous writes: Is this normal? Why would some process continuously write? I ...
9
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3answers
16k views

Mac OS Sierra - Disk Utility will not let me partition an external hard drive

Within disk utility, the partition icon is grayed out. If I mouse over it, it reads: "Disks with Master Boot Record Partition Maps cannot be partitioned". The history on this drive: It is a 2 TB ...
9
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5answers
106k views

How to restore Mac OS X on a new hard-drive?

I am going to upgrade my MacBook Pro hard-drive, but before doing so I'm trying to figure out how to restore OS X on it. My DVD drive doesn't work so I cannot re-install from the DVD. I have a recent ...
9
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4answers
14k views

How to control fan speed in macOS Sierra?

After replacing the hard drive in my 2009 iMac 27", I noticed that the hard drive fan spins at maximum speed since the sensor cable is not plugged in. (The new SSD drive doesn't support it) To solve ...
9
votes
1answer
27k views

macOS Sierra “System” files eating up disk space [duplicate]

macOS Sierra system is using over 200 GB of storage space on my 250 GB hard drive. I've removed Time Machine backups to no avail. How do I free up space? My current usable space being less than 50 GB ...
9
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4answers
71k views

I think I messed up the Fusion Drive on my 1TB iMac (with BootCamp)

this is a somewhat similar post to this one (Can't create partition on free space with Disk Utility) but not quite... It started with me creating a BootCamp partition (around 145 GB) for Windows ...
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2answers
24k views

Mount FAT32 partition (external drive) on Mac

I have an external disk drive of 2TB with two partitions, one NTFS and another with FAT32 format. The NTFS partition is automatically mounted when i plug the device using Paragon NTFS but I don't ...
9
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2answers
10k views

How do I resize OS X main partition when I already have other BootCamp partitions?

Short story: partition resizing using Disk Utility fails because MediaKit reports no such partition when I try to shrink it. I also tried the same while booting from the DVD, same result. Details: ...
9
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4answers
19k views

How to synchronize contents of two external drives?

I have two external hard drives (ExFAT formatted) which I need to keep in sync. Specifically, drive B must mirror the contents of drive A and drive A must not be modified. How can I do this without ...
9
votes
2answers
798 views

How can I move my data to the new harddrive?

So I am planning to upgrade my Macbook pro's harddrive to a SSD. I don't know much Mac OS X tools, so I was wondering if anyone could let me know how I can copy my entire harddrive (including OS) to ...
9
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9answers
57k views

Checking for bad blocks without formatting

My Mac tends to pause every now then when preforming simple tasks such as right clicking, opening menus and typing (It actually just froze when I started typing this question.). I've read in a few ...
9
votes
4answers
5k views

Why have 5 different iMacs developed corrupt OS X partitions when the physical drives are fine?

I'm a tech for my local school district and we are having some problems with our iMac Multimedia Lab. Over the past nine months, 5 of the 22 iMacs have suffered from filesystem corruption. The only ...
9
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2answers
3k views

Is there a way to limit external hard-drive random spin-up?

I have 2 external USB drives connected to my iMac running 10.7.3. One is designated completely for Time Machine use and the other I use for data. (Nothing but a bunch of JPGs on that one.) The first ...
9
votes
4answers
8k views

Automatically shrink existing Time Machine Backup to a fixed size

I googled for hours to find a solution for this issue, but I couldn't find an answer that fitted for my problem. My setup: I have an iMac with a ~1TB Hard Drive I'm backing it up via Time Machine to ...
9
votes
1answer
646 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 ...
8
votes
3answers
2k views

MacOS Sierra - Cannot find what is using all disk space

My Macbook Pro has run out of disk space, and I cannot find out why. I have minimal Applications and user data. Output from df -h Filesystem Size Used Avail Capacity iused ifree %iused ...
8
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2answers
7k views

How to fix Disk Utility, About This Mac, and Finder that disagree on hard drive space usage?

Has anyone seen this issue and know how to fix it? Look at the free space reported by running "Get Info" on my hard drive (Macintosh HD) in the Finder, "About This Mac" from the Apple Menu, and Disk ...
8
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2answers
18k 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?
8
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7answers
45k views

How to identify and fix files with corrupted / inaccessible disk blocks

I have a late 2011 Macbook Pro, running Mavericks 10.9.2. Its sole HDD is a 750GB drive, formatted with Bootcamp. It's still running reasonably well, but in running a defragment pass on it, I've ...
8
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4answers
5k views

Prevent Spotlight from indexing external drive

I sometimes use an external SSD with macOS Sierra on it, in conjunction to my current internal drive which has macOS Sierra running on it. One annoying thing about Spotlight is that whenever I search ...
8
votes
3answers
8k views

Is there anyway to expand my MacBook Air's hard disk?

I have a 2011 MacBook Air(11-inch), I am using OS X 10.9, but I only have 64GB Flash Storage, and I want to expand the storage of MacBook Air's hard disk. I asked geniuses at Apple and they told me ...
8
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2answers
14k views

How to fix Mac hard drive partition showing as Fdsik_partition_scheme

My situation seems very similar to how to fix GUID hard drive corrupted to MBR but with enough differences that I haven't been able to put together a confident solution. I have a 3TB Toshiba drive in ...
8
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2answers
1k views

How can I copy data from an external HDD that is about to fail?

I have an external HDD that is about to fail. I want to copy as much as I can to a new external HDD before it completely dies. I've been able to start copying files for a few minutes before the drive ...
8
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4answers
12k views

Disable mounting Internal Macintosh HD at boot [duplicate]

My iMac (mid-2010 model, Snow Leopard) has a problem with S.M.A.R.T status: Failing and it has become read-only. Because I didn't want to waste money on the repair, I bought an external HD, so the ...
8
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4answers
3k views

iMac inconsistenly hanging and showing beach ball

This past week, I've been having constant problems with my 2007 Aluminium iMac (2.4GHz, 3GB memory, 320GB HDD). I've been downloading using Transmission, and when (sometimes) stopping or starting a ...
8
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1answer
884 views

Can I Recover an Erased Time Machine Disk?

I erased (not deleted) the entire Time Machine disk by accident in Disk Utility instead of another disk. Under "Security Options" it was set to "Don't Erase Data", so I would think that it means the ...
8
votes
1answer
8k views

Create a disk image for recovery

In Windows there is a concept of creating a "disk image" for recovery, where one creates a complete copy of the operating system drive so that if the operating system doesn't work, the disk image can ...
8
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1answer
1k views

What is “applessdstatistics” doing on my non-SSD, non-Fusion drive iMac?

I have a mid-2010 iMac that has regular HDD (not a Fusion drive, just good old spinning disks). Recently, after reboot, I was hearing intensive HDD I/O sounds and firing up Activity Monitor I noticed ...