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

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Will upgrading Mac Mini hard drive void AppleCare Warranty?

After purchasing a Mac Mini, I wanted to replace the hard drive from a 5,400 rpm hard drive to a 7,200 hard drive. Will this replacement void my AppleCare warranty?
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1answer
1k 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, ...
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2answers
222 views

Bulge in MacBook Pro near Hard drive

I have noticed in that past 24 hours that two rigid and straight "lines" have developed as bulges on my Mid 2010 MacBook Pro 15 inch. They are noticeable when looking at it in the light and you can ...
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2answers
2k 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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2answers
885 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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3answers
453 views

Exact clone of HD

I managed to broke something on my iMac's internal HD. I have now done a successful restore using DiskDrill, but just in case I want to make an exact copy of the internal HD. Not just some partition, ...
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1answer
1k views

Fan speed increased after upgrading to SSD

I just replaced my Macbook Pro's Mid 2012 HDD with a Samsung 850 EVO SSD. The performance is great and I am very happy, but I noticed that the fan seems to run faster. It is not a drastic change, but ...
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1answer
178 views

New SSD problem

I've just installed a new SSD replacing an HDD in my old (late 2008) iMac. When I switched it on all I got on screen was a question mark. On the advice of my son I tried cmdR during switch on with ...
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1answer
429 views

Time Machine deleting backups from several months ago (but not the oldest)?

During its "Cleanup" phase, Time Machine has recently been deleting backups from several months ago—even though these aren't the oldest backups, and my backup drive isn't full. My backups go back to ...
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2answers
4k views

How do I replace the hard drive in my circa 2008 iMac?

My circa 2008 iMac hung up today and wouldn't reboot -- it just hung on boot with the Apple logo and the spinner. I booted the Snow Leopard DVD and ran Disk Utility on the drive. It told me the drive ...
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vote
1answer
411 views

Hard drive no longer accessible

This is a 4 TB hard drive formatted in Mac's Disk Utility as a single non bootable Exfat partition with the drive letter G. It worked fine before I decided to make a clone drive of my C bootable drive....
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3answers
29k views

USB Drive Will Not Mount, Not Listed in Disk Utilities, but Found In System Profiler

I have a Seagate FreeAgent Go drive with the optional docking station. I use it to keep files that I don't access on a regular basis and as a place to do "quick backups" of things like my Paperless ...
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1answer
205 views

Disable the disk check when reconnecting an improperly disconnected disk to OS X

If you disconnect a removable drive without ejecting it first, the next time you connect it, Windows or Mac run an fsck check on the disk to ensure data integrity. Windows will ask if you want to ...
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1answer
606 views

SSD adapter for optical drive

I'm going to add a SSD drive to my macbook pro. I'm wondering if the optical drive adapter can have any influence on the disk speed, taking it down from a SATA III to a SATA II or I.
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4answers
888 views

I may have used Disk Utility to erase my drive - is there hope?

I have an external NTFS drive from which I was trying to copy some files to my macbook pro 10.6.6. I was getting error 36 so with disk utility I clicked on Repair Disk. Now all my data is gone! ...
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2answers
1k views

Two older Macs (G3 / Intel) need their drives erased. No install discs

I have two older Macs in which I want to erase the hard drive. Secure-erase is a plus, but not a show-stopper at this point. I don't have any Mac OS X discs so I can't use disc utility. What I'd ...
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8answers
88k views

How to eject my external drive when my Mac refuses because of Spotlight?

I have plugged an external disk to my Mac. Now, I want to eject it. But my Mac stubbornly refuses and says that an application may be using the disk. I have not launched any app neither opened any ...
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3answers
7k views

How do I eject the Time Machine backup drive automatically after each backup?

How do I set Time Machine to eject my external Time Machine backup drive automatically after each backup?
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2answers
16k views

What is com.apple.bird? Why does it grow so big?

Trying to clean up their hard disk, some users discover ~/Library/Caches/com.apple.bird is pretty big. In the order of too many Gigabytes. What is it?
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6answers
25k 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 ...
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4answers
7k views

FAT or exFAT or NTFS

I recently brought Western Digital's Passport Essential, and will be using with my MacBook (running Snow Leopard), MacBook Air (running Lion) and Windows 7 Desktop. I should be able to read-write data ...
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3answers
85k 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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2answers
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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: ...
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5answers
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What is filling up my hard drive so fast?

Last night (Because my hard drive was almost full) I freed about 4GB. Then I came back to my Macbook about 3hrs later (I left it idle) and Its was full again. Is something is eating my mac? If I go ...
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5answers
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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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1answer
9k views

OS X Yosemite Hard Disk Errors even after Repairing them

Basically, I do a lot of C programming (for class) so I use gcc a lot on my mac. Recently since two days, whenever I ran it, the entire computer is getting frozen, and a force restart is necessary to ...
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5answers
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Unable to format / erase hard drive

I have an external HD that died on me a while ago and I'm trying to see if I can format / erase it to start using it again. The disk does not show up in Finder but I can see it in Disk Utility. When ...
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4answers
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What are the sector sizes on Mac OS X?

I read on the HFS Plus Wikipedia page that the default sector size on a Mac is 512 b. However, I also read that Macs support 4kb sectors. How can I determine which I have, 512 b or 4 kb sectors? I ...
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4answers
1k 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 ...
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2answers
3k 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[...
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4answers
635 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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4answers
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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? ...
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5answers
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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 ...
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4answers
218 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.
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5answers
20k 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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votes
4answers
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How to upgrade firmware and reperform a Samsung 840 Evo on a Mac

i got one of these Samsung 840 Evo Basic 500GB on an iMac (used externally in a TB case - standalone, not Fusion). I know there's a firmware update out which is already available for Mac users too ...
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5answers
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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 ...
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2answers
519 views

What process is accessing the hard drive?

I can hear the hard drive chugging away when it should be idle. Some process is writing/reading from it in semi-random bursts, let's say once every second. Very annoying and wasteful. I tried ...
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3answers
3k 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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1answer
2k 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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votes
3answers
9k views

How can I tell if my iMac's hard drive is dying?

A couple of days ago, my three-year-old iMac locked up. When I rebooted it, it only displayed a folder icon with a flashing question mark. After a couple more reboot attempts, it booted. I ran Disk ...
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votes
5answers
30k views

How do I fix my SSD after installing Yosemite and Enabling TRIM? No boot & can't erase

I recently upgraded to Yosemite, enabled FileVault and foolishly enabled TRIM (had no idea it wasn't supported). Upon restart, my machine gets the grey screen with the crossed-out circle of death. ...
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votes
1answer
8k views

Diskutil can't find Core Storage Volumes

My OSX Mountain Lion will no longer atart up. After the logon screen it spins forever (the Apple logon is replaced by an error sign). When I run in single user mode I get a "still waiting for root ...
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votes
4answers
44k 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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4answers
14k views

Need to replace a hard drive in a macbook

I have been asked to "replace a hard drive in a macbook". I'm able to physically swap out the drive, but I have no idea how mac software works. I have some questions: If I put in a new hard drive, ...
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2answers
8k views

OS X Snow Leopard - Can't boot from HD, Target Mode or CD

Today my computer started getting really slow and freezing alot, so i rebooted. HOwever it won't boot up again, keeps getting stuck on the grey screen. Here's what i've tried: Startup in safe mode ...
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10answers
14k 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 ...
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2answers
3k 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. ...
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1answer
846 views

What's the easiest way to free up disk space on my iMac with a huge photo library?

This is a hybrid hardware/software question with a few more factors than the typical "freeing disk space" question. I have an older iMac with (I think) about a 250 GB hard drive. It's been running ...
5
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3answers
307 views

Time Machine External Drive

What factors are important when selecting an external hard drive for time machine backups?