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Questions tagged [hard-drive]

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

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8
votes
3answers
11k views

How to write fstab rules for an NTFS volume if the volume has no LABEL or UUID?

Basically, I was following this tutorial to enable writing to an NTFS Volume (which works when the Volume has a LABEL or UUID). I have an external USB drive with an NTFS volume that doesn't seem to ...
8
votes
1answer
4k views

Disk encryption utility that works with both macOS and Linux

I have two work stations with different platforms (macOS High Sierra and Ubuntu 16.04). I need to have an encryption utility that works on both of them. To be more specific I need to encrypt a ...
8
votes
5answers
34k views

“Couldn’t create temporary file.” error when erasing free space on external disk

I was trying to wipe the free space of an external USB 3.0 disk in OS X (Yosemite) disk utility. However, I receive the following error: EDIT: The disk is formatted as GUID / Mac OS Extended (...
8
votes
2answers
1k views

Encrypt External Hard Drive for Mac and Linux

I have an external hard drive that I backup with Time Machine. I'm trying to determine the best way (or if it's even possible) to encrypt it so that Time Machine can still back it up and it can be ...
8
votes
1answer
2k views

How can I tell whether a drive is asleep?

Is there an application or command-line utility for Mac OS X to query a hard-disk to see if it is 'asleep' or 'awake' right now? (i.e. as controlled by Energy Saver / pmset disk sleeping preferences). ...
8
votes
1answer
133 views

Is it possible to use an iPhone as an external encrypted drive accessible by iOS and any unix-based OS?

Is it possible to use an iPhone in a way that can be encrypted and accessed by both iOS and any unix based OS as an external drive? Even if additional software or tinkering is necessary in either ...
7
votes
4answers
2k views

Will a cloned hard drive function exactly as the original?

If I buy a new hard drive and clone my original onto it (using Carbon Copy Cloner or something similar), will my computer function exactly the same as it did before? Will things like licensed programs ...
7
votes
2answers
7k views

Moving file between disks in Mac OS X?

Is there any way so when I drag and drop a file from one disk(A) to another disk(B) the files are moved instead of copied? I have a mac book pro and a mac pro(old cool one) and when I drag and drop ...
7
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2answers
4k views

How to make an expanding compressed encrypted disk image?

I'd like the following setup: A DMG file sits on my HD, taking up only the space of the contents, or perhaps only the space of the contents compressed. If I double-click on it, I need to give a ...
7
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4answers
3k views

How do I know if I need a new hard drive?

I just received a MacBook Pro from somebody else because it was running too slow. Booting up takes about 4 minutes. I have tried formatting the drive and reinstalling the operating system from ...
7
votes
4answers
2k views

Can I just swap the hard drives of two macbook pros (different years)?

I'd like to swap the hard drives of two Macbook Pros. One is a Core 2 duo model from 2010, the other a 2011 i5 model. Will this work? I just want to save time and not go through a lengthy data copying ...
7
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4answers
100k views

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 ...
7
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3answers
10k views

Resize APFS partition in Mojave

I'm attempting to resize a partition that's too small for my needs. Here's the output from diskutil list: ~> diskutil list /dev/disk0 (internal): #: TYPE NAME ...
7
votes
2answers
720 views

Most efficient way to transfer data from a mid-2007 iMac to a 2017 iMac?

I have a an old, mid-2007 iMac running 10.11.6 and a new 2017 iMac running the latest 10.12 release. The old iMac has 800 GB of data on it, spread across three user accounts, that I'd like to migrate ...
7
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2answers
2k views

Can I manually put an external hard disk to sleep?

Is it possible to manually put an external hard disk to sleep? Right now, I've already got "Put the hard disks to sleep when possible" checkmarked in the Energy Saver preference pane, and so they ...
7
votes
1answer
6k views

“Encrypt backups” disabled for Time Machine on Mavericks; due to partition?

I picked up an external hard drive a while back and have been using it for Time Machine back-ups. Recently I thought to confirm that the disk is encrypted so that it won't be useful if someone nicks ...
7
votes
3answers
1k views

How can I increase the time before my external drive powers down?

I have an external USB drive from LaCie that is connected to my MacBook Pro – almost all the time. So whenever I don't use it for a few minutes, it powers down. That means, it takes a few ...
7
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6answers
45k views

How to set VirtualBox in order to access external hard drives in guest Win7?

I have installed VirtualBox in order to use Windows 7 as guest on a Macbook Air running Mavericks (mainly to be able to use a printer that has no drivers for Mac). Also, I have installed the ...
7
votes
1answer
558 views

My external boot volume won't startup all my Macs when it should

Because of the mobility of my work I decided to create a boot volume on an external USB-C SSD so that I can run my user environment on a number of Macs (on an iMac Pro (2017) while at work, on a 15" ...
7
votes
1answer
5k views

External hard drive slows down computer and makes processes freeze

I have a very odd issue with my external USB3 hard drive. Sometimes, I can use it with no problems, but sometimes it slows down the entire computer and freezes processes. For example, spotlight might ...
7
votes
2answers
10k views

Inherit Time Machine backup after changing source hard drives [duplicate]

I am using Time Machine to backup an external HDD (A) (2 TB) linked to my computer to an external 6 TB HDD drive. I now had to shift the data from HDD (A) to a new 3 TB one (B). Is there a way to ...
7
votes
1answer
48 views

Reformat hard drive - why do I have two hard drive options?

I'm trying to erase my hard drive by reformatting. I am following the steps here: https://support.apple.com/en-us/HT204904 I am using the Opt ⌥ Cmd ⌘ R option on startup to install the ...
7
votes
2answers
4k views

Why is it important to keep lots of freespace on OSX? What is the impact?

I have a 500GB drive and have less than 50 GB free. Console is reporting several interesting errors saying I'm too low on space and it's cleaning up "stuff" 1/6/13 4:49:51.475 PM com.apple.mtmd[...
7
votes
1answer
8k views

Can I have two Time Machine partitions on one hard disk drive?

I know that someone can use a partition on a hard disk drive for Time Machine, but is it possible to specify more than one partition on a single drive for this purpose? The scenario: My partner and ...
7
votes
1answer
444 views

Diagnose disk I/O per application

I have a Leopard system which feels rather sluggish, and which I suspect may be disk-I/O-bound. While I know how to check which app is using CPU or memory (top or Activity Monitor), I don’t really ...
7
votes
1answer
5k views

Cannot upgrade to High Sierra: Unable to unmount volume for repair?

I'm stuck in an upgrade loop for High Sierra. I have: 2017 iMac 3.11 TB fusion drive for main drive labeled Macintosh HD in my system I've downloaded the High Sierra installer from the App Store and ...
7
votes
1answer
281 views

When backing up many Macs to one hard drive, must the hard drive be partitioned for each Mac?

I'm getting a 5TB drive which I plan on using for backing up all my media, and my OS/config for my machines. The backup tool is Carbon Copy Cloner. I currently have two Macs but may get a third one ...
7
votes
1answer
8k views

Can't restore to backups after removing disk in Time Machine

I've been using a WD 2TB HD for the last two months to handle my Time Machine backups for my Macbook Air. Yesterday, I wanted to set it up to handle backups through the network. In the Time Machine ...
7
votes
5answers
123k views

Deleted photos from MacBook but storage space not reclaimed

I recently ran out of space on my MacBook Pro because I have a lot of pictures saved to it, so I went out and bought an external hard drive (2 TB). I moved every single photo on my MacBook hard drive ...
7
votes
2answers
6k views

Encrypted external drive usually prompts for password, despite being in keychain

I have an external encrypted drive, and almost 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. ...
7
votes
3answers
30k views

fsck and Disk Utility won't repair Volume: invalid b-tree node size

I accidentally wrote some .iso data to a disk through dd by mistake. I cancelled the command after just 2 seconds but that was enough to wipe the first EFI partition (200MB) and a bit of the second ...
6
votes
5answers
2k views

Data Recovery for Accidentally Erased Hard Drive

I accidentally erased my hard drive in my 2010 MacBook Pro that had all of my information, photos, contacts, you name it... is there any way I can recover my data that was on my MacBook before I ...
6
votes
2answers
31k views

Move Documents folder to different drive

I would like to move the Documents folder to a different drive. I am running OS X 10.9.4. I am trying to preserve space on my OS SSD.
6
votes
4answers
18k views

Installing OS X on secondary SSD

I have a MacBook Pro 17" Late 2011. Today I removed to optical drive and installed a SSD (where the HDD was) and moved the HDD to the optical drive location. Now I want to make the SSD my primary ...
6
votes
2answers
878 views

Mac Pro install disk keeps ejecting itself

I am not that savvy with Macintosh computers so I can't figure out why the install disk keeps ejecting when I attempt to boot from disk by holding down the "C" button or the option button. It is not ...
6
votes
3answers
1k views

Securely erase all user data on an old iBook

I have an old iBook (Model A1007) that I would like to donate, but first I need to delete all of the last user's data so that it is not recoverable. With Windows machines, I usually do this by running ...
6
votes
3answers
15k 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 ...
6
votes
4answers
259 views

How do I determine the speed of a disk drive?

I'm looking for a way to determine the read/write speed of a disk drive, either by looking up some system information or running a simple benchmark test utility.
6
votes
1answer
3k views

Migration Tool VS CCC

I have a 2010 Mac Pro. Still running Snow Leo, as there are still quite a few programs that are PPC and I'm not prepared to update all of them. My current boot drive is 1.5TB and I'd like to swap it ...
6
votes
1answer
9k views

Disconnecting disks from Airport Extreme

Since Apple released the new Airport Utility with the simplified UI, there doesn't seem to be an option to "Disconnect All Users" to kick all users off a hard drive to safely remove it when connected ...
6
votes
4answers
34k views

Not enough storage for El Capitan; no way to free up space

I wanted to upgrade my Macbook 2008 from Yosemite to El Capitan. Unfortunately, when I downloaded it and restarted my computer, on the "select the disk on which to install" page the only location, ...
6
votes
1answer
8k views

How to fix GUID hard drive corrupted to MBR

I am on OS X 10.9.5 with a late 2013 iMac. I have a 3TB hard drive that has an unusual problem. It is a Western Digital 3TB Red WD30EFRX. I formatted it with two partitions, both 1.5TB. One was a ...
6
votes
1answer
4k views

How can I modify an existing FAT partition without losing its data?

I have a 1tb hard drive. Long a go I split it it into two partitions. One I left as a Mac OS extended (journaled) with 990GB and one as FAT with 10GB. Now I would like to add about 100GB to the FAT ...
6
votes
2answers
6k views

What terminal command or program can list an SSD's Power On Hours?

I'm looking to script using the unix shell the retrieval of SSD (and HDD) data that disk utility shows in the information window. I'm immediately interested in the Power On Hours and Power Cycle, but ...
6
votes
5answers
936 views

Mac Application to defrag my Mac drive

I work on media files as per my profession. I find my Mac (Mac Lion) going slower day by day. I think it will be beneficial to defrag the drive but didn't find any Apple tool for it. I want a an ...
6
votes
2answers
6k views

Does Mac have something similar to a Linux loop device (alternative to losetup)?

I am trying to work with some CD and hard drive images that I will run inside of QEMU. On Linux, I mount the images using the losetup command, but I notice Mac does not have this. Is there something ...
6
votes
1answer
555 views

How do I change the name of the hard drive

Right now my hard drive is called "Macintosh HD." How do I change it to something cool like "Death Killer"
6
votes
2answers
25k views

How can I fix Error: -69877: Couldn't open device after interrupted formatting process?

This question, possibly the same question, has been asked: Couldn't open device However, my question hopefully demonstrates a more specific scenario as the situation in which caused the error ...
6
votes
3answers
21k views

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 that ...
6
votes
1answer
3k views

Large difference in reported free disk space

I have a strange discrepancy in the amount of free disk space that's being reported. The finder says: My iStat Menus says: Which is the same as df -h reports: remco@Prosperpine ~ $ df -h ...