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

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Can I backup a Time Capsule to a HDD drive connected to its USB port?

I have a 2TB Time Capsule and multiple external HDDs. I recently bought a 4TB external drive, now I'd like all my files, in all my HDDs to go to the 4TB drive that is connected through USB to the ...
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2answers
23 views

Change drive “block size” to 4096

I just bought a 4tb hard drive and enclosure and attempted to encrypt it with truecrypt. I errored with a message saying the block size must be 4096 bytes for >2TB drive. How do i alter the drive to ...
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2answers
1k views

External drives won't mount on restart

One of my staff just got a new Mac mini with the USB 3 ports and Mavericks. It has 2 Seagate GoFlex 3TB hard drives connected: 1 for Time Machine, the other for Dropbox files. When the computer is ...
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1answer
79 views

MacBook Pro mid 2012 OS X Yosemite hard drive error

So I went to my MacBook the other day and the screen shows nothing but a folder with a question mark flashing. It won't reconize my hard drive. I can still hear it spin up and running so is this still ...
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3answers
2k 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 ...
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0answers
14 views

Impossible to join free space on main Machintosh HD [duplicate]

I've removed Windows deleting the partition because from BootCamp Assistant it gave me error that couldn't partition the disk. The problem is that now I have 100 GB of free space (which are from the ...
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3answers
20k views

MacBook Pro flashing question mark but I can't repair because hard disk not found in disk utility

Today my MacBook showed up some wheel of death and I waited and waited and then after a long time (10 minutes) decide to force shutdown. Ok, I know its not a good idea but I've done this before and ...
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1answer
31 views

What hard drive to buy for MacBook Mid 2012? [on hold]

I need to change my hard drive, and am about to buy one of these... Seagate ...
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0answers
25 views

Lost partition on WD 1.5 TB external drive

My 1.5 TB WD drive failed out of nowhere and now it shows up saying "The disk you inserted was not readable by this computer" This is how it shows up on Disk Utility This is what sudo gpt show ...
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0answers
11 views

Kernel Panics on MBP mid-2010 with a Seagate Hybrid Hard Drive [duplicate]

I have a mid 2010 MBP 15-inch and I recently replaced the Apple manufacturer hard drive with a 1TB Seagate hybrid hard drive and I am running Yosemite. My MBP crashes randomly when I'm playing League ...
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12 views

Installed rEFInd Boot Manager, it seems HD re-ogranized

Before I installed rEFInd, I believe there were three partitions to my Mac, disk0, disk1, disk2. Now, when I run in the Command line diskutil list This is what remains: /dev/disk0 #: ...
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2answers
61 views

Why Does A New Mac Pro Only Support a Single Internal Drive?

Every graphic-heavy application I have used has recommended storing files it uses on a separate disk from the boot disk (preferably an SSD), however with the new MP this isn't an option. The only way ...
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12k views

How can I keep my fan from staying at full speed after replacing the hard drive?

I replaced a hard drive in a 2011 iMac (Core i7), though it was a standard hard drive and didn't have a location for the S.M.A.R.T. cord. (Or at least I think that's what it was.) Since then, the ...
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2answers
182 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 ...
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3answers
12k 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 ...
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1answer
64 views

New “EFI boot” drive appearing after reverting OS X drive to HFS+

Months ago I performed a clean install of Yosemite, and as you can read elsewhere, drive was formatted as Core Storage. Later on I partitioned and put on Windows 8.1 through Bootcamp. Worked well for ...
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1answer
3k views

Airport Extreme 802.11ac Can't See USB HDD

Hardware: Airport Extreme 802.11ac Transcend StoreJet 250GB HDD Belkin 4-port, powered USB hub Configuration: HDD formatted as MS-DOS (FAT32) via Disk Utility HDD connected to USB hub Airport ...
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1answer
58 views

Making a full image of an installed system

I'd like to know if is possible to make a full, bootable, and restorable image of an entire Yosemite installed system, (that is, with all installed apps and settings) without using a commercial ...
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2answers
264 views

iMac HDD fan running full speed. What is wrong?

My iMac (27" Mid-2010) and the HDD fan is spinning full speed with a measured HDD temperature of 50 °C. I have removed the dust and dirt from inside and it is pretty clean. Nevertheless even when at ...
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0answers
18 views

Mac Mini HDD noises and internal HDD Standby

I have a default Mac mini 2.8GHz 2014 with Fusion Drive. My problem is that the mac makes a few noises. Because it is my home server and guest are sleeping in that room these noises are annoying. I ...
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1answer
43 views

Enable writing to NTFS harddrive with non-standard name on Mac

I have a lot of NTFS hard drives back when I used a Windows PC. I'm trying to write to these drives with my Macbook Pro on OSX Yosemite 10.10.2. I'm going through this tutorial. I have to write this ...
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1answer
6k views

MacBook Pro won't boot with new hard drive, but a different MacBook Pro will

So here are the details. My friend and I both have 13-inch Mid 2010 MacBook Pro's. Same processor and specs since they were purchased at the same time, but originally had 250 GB hard drives. His hard ...
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31 views

Unknown Disk Space, can't touch it [duplicate]

My visible Disk Usage minus free space is out by 123GB. Clarification: Externally booted disk repair show no errors. Permissions have been fixed. Time Machine has had local off with: sudo tmutil ...
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22 views

APPLE SSD SM0512F Media Equivalent

My Mac Pro (Late 2013) uses an APPLE SSD SM0512F Media SSD; I'd like to buy an equivalent SSD to use externally for cloning, backups, etc. I noticed on the PassMark website it shows performance ...
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8 views

External HDD is mounted, but files are (suddenly) invisible

Being fed up not being able to write to my external HDD (which is ntfs) I decided to use this script. I checked the script beforehand (I am a ruby developer with some, but limited knowlegde of bash ...
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2answers
42 views

Terminal command to arrange all files/folders by name on hard drive

Looking to tidy up my iMac. Like everyone, I have lots of files/folders on my iMac. When they get dragged and dropped, or moved around, they retain their position, and the only way to fix this is to ...
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2answers
155 views

Hard Drive Issues with MacBook Pro 13-inch mid-2012

I'm trapped in a HDD nightmare with my MacBook Pro mid-2012. I updated to Yosemite 10.10.3. A couple of days after the update, I was watching a movie on my TV screen via HDMI. In the middle of the ...
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2answers
29 views

How do I mirror my hard drive?

How do I mirror my hard drive? I want to preserve programs for which I've lost the license number.
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4 views

Ipod classic freezes after library is half loaded - restore, new hard drive and Disk U don't work

My elderly 160gb ipod has a problem loading more than about 21,000 songs on to it. The loading from my Itunes from a late 2012 Mac is uneventful and everything looks fine and the Itunes goes through ...
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10 views

High CPU usage during disk operations

Early 2009 17" MacBookPro (MacBookPro5,2) 2.66 GHz Intel Core 2 Duo OS X Yosemite 10.10.3 240 GB OWC Mercury SSD, installed in 2010 I've had issues with high CPU usage for a while now. The original ...
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3answers
4k views

How To Securely Erase Free Space Using Terminal?

A friend told me that when you delete a file on your Mac in the normal way it actually stays where it is, but it is just no longer usable by your Mac. The addition of more files to your Mac causes ...
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1answer
51 views

NTFS support for Mac

I am long time windows user with who just started using Mac. All my external drives(1 & 2tb 2.5 portable drive ) are formatted in NTFS. But I found that my mac cannot read or write on that. So, ...
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1answer
27 views

My MacBook won't recognize my external hard drive (Passport - that I use to back up the Mac!)

I'm not techie at all. But I manage the basics. I've always backed up my MacBook (2009) on a Passport. I just plug it in while the Mac is connected to power source & click the icon & it ...
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28 views

What are the most useless files on startup disk and how can I delete them? [closed]

I have some problem with my MacBook. It has gotten full and I can't understand what taking up place on hard drive. Do u know what files are useless, so I can delete them?
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2answers
4k views

Restore Recovery HD partition from Yosemite downgrade

I recently got back to Mavericks from Yosemite, everything went fine. As I normally do, I checked my HDD with the Disk Utility and found some trouble, then I boot on recovery mode to fix my HDD. I ...
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1answer
30 views

One of my start-up drives is missing

I have a Mac Pro (Early 2009) in which I am running two OS's. 10.10 on a Mercury Accelsior SSD and Snow Leopard on a conventional drive. Before upgrading the SSD from Mavericks to Yosemite all was ...
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208 views

MacBook won't boot from internal SSD

I got a 2011 MacBook Pro and had a Samsung 840 Pro installed running Mountain Lion, then Mavericks for about a year without any problems. Without any apparent reason the MBP just wouldn't boot from ...
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9 views

Stop sign when booting from internal ssd, boot goes fine if the ssd is in external case

sorry for the long post and my english. I have an early 2011 Macbook Pro 13 which I purchased in july 2011 and it worked fine until one week ago. Since when I bought it i replaced the stock hdd with ...
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23 views

repair Filesystem from single user mode [on hold]

I have this imac, where It just had a bunch of IO errors, on the old disk. I clone the old HD to the new HD and that went fine. It even booted the first time I stuck the hard drive back in. ...
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2answers
33 views

Is disk image encryption slower than partition encryption?

I am considering two options to encrypt some data: add a new encrypted partition add an encrypted disk image Which option is faster in terms of disk read/write speed? I suspect that an encrypted ...
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35 views

Unknown disk found using diskutil, cannot delete

Using the command line, I wanted to see all available drives on my machine. So, I type diskutil list and besides Recovery HD and Macintosh HD, I notice this: /dev/disk3 #: ...
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25 views

Why can't I mount a Samsung SSD 850 EVO?

I just bought a Samsung ATA III SSD drive, the Samsung 850 EVO. I installed it in an external enclosure that I know works with an ATA II drive, but I don't see the new drive in Disk Utility. ...
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2answers
38k views

Blinking question mark on folder on boot

I am attempting to boot up my 2009 MacBook Pro, but when it starts it immediately shows a white screen with a 'question mark folder' — it keeps blinking until the computer shuts down (unless I keep it ...
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0answers
29 views

Disk Utility won't let me create new partitions?

I had a 500gb HDD installed in my Mac running OS X 10.9.5 Mavericks. Being an older drive it started to have some issues, so yesterday I went out and purchased a new 1TB hard drive to replace the ...
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1answer
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Error with Android usb. Working Macintosh HD not repairable. Alternatives to backup?

I have to say first, I have almost zero experience is the use of Terminal, an usually I'm very careful with what command I use. I have tryed to create a bootable Android x86 usb and it was a success, ...
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2answers
46 views

Missing date in 'About this mac' window

I'm looking for used macbook pro and found this one. Why there is no date of manufacture in 'About this mac' window? Can it be hacked mac? Also on second screen shot there is mystical '1Tb flash ...
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43k views

Disk Utility won't Unmount HD for formatting

I have two internal drives in my 27" iMac (10.8.5). An SSD system disk and a 1TB SATA drive. The HDD has been acting up recently, very slow performance, bad behavior etc. Tech Tool Pro and Disk ...
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1answer
32 views

Save data from broken Macbook Pro HDD

I have a broken Macbook Pro HDD with two partitions on it: OS X and Bootcamp. I need to take some files from both partitions: the HDD is now mounted to another PC via. SATA adapter Windows sees the ...
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3answers
10k views

Problems reinstalling OS X Mavericks on Macbook Pro (hard drive displays “locked” and I get “live file system repair is not supported” when repairing)

I'm trying to fix someone's Macbook, and I am a Windows user so I'm having trouble confirming that his hard drive is ruined or unfixable which is what I think is the problem. When you boot it up it ...
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1answer
2k views

Macbook boots up to grey 'prohibited' symbol

I'm having an issue with my '09 13" Macbook Pro. When I boot it up, it seems to be booting normally until about thirty seconds in, when the Apple symbol is replaced with a kind of 'no-smoking' symbol, ...