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

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Can I use an Advanced Format drive in a Late 2010 13" MacBook Pro?

I have the 13" Late 2010 MacBook Pro, and the 250 GB Hard Drive is way to small, so I'm looking to get a bigger one. I wanted to upgrade to a 750 GB WD Scorpio Blue (WD7500BPVT), but I've read ...
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2answers
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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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1answer
2k views

How can I tell which volume the operating system is on?

I'll admit that I am kind of rolling multiple questions in to one here so please forgive me and try not to knock me for it. I am new to Mac but I'm trying to port one of my Java applications to OS X. ...
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1answer
4k 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 ...
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4answers
196 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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8answers
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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 ...
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2answers
908 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 ...
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1answer
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What kind of encryption does Mac OS X Extended (Journaled, Encrptyed) use?

Since my primary hard disk is encrypted with FileVault2, I also wanted my backup drive to be encrypted. I plugged in my external drive, brought up Disk Utility, and went to erase/format the disk. I ...
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1answer
209 views

Is it safe to unplug a drive while MacBook is asleep? (i.e., does sleep unmount drives?)

Is it safe to unplug a drive while MacBook is asleep? (i.e., does sleep unmount drives?) I think probably not, at least if a file operation was running when you put the computer to sleep, I guess it ...
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2answers
274 views

Disk space disappears to 0, then after a while I have free space

I've been having this problem for quite a while and it happens occasionally and when it does it get very frustrating and I'm just trying to pin point what is causing it. When it happens, the disk ...
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1answer
884 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 ...
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1answer
308 views

How to isolate the most disk-active process(es) in OS X?

I have some process(es) performing a lot of drive access from time to time, however I've hitherto been unable to isolate which process or processes are performing the access. What shell command can I ...
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1answer
593 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 ...
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1answer
323 views

Can I convert a RAID 0 set to a RAID 5 set?

Can I convert a RAID 0 set to a RAID 5 set in a Mac Pro? I currently have two 500GB drives in a RAID 0 set. I want to add a third drive and convert it to a RAID 5 set. Is it possible to do this ...
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2answers
8k 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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2answers
719 views

How do I spin down a secondary disk when not mounted?

I have Macbook Pro 13" (Early 2011). I replaced the SuperDrive with a SSD that now is my main disk. The existing HDD is used for Time Machine and nothing else. I have 2 problems with the secondary ...
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1answer
5k views

Customize the Boot Camp Drive Icon in Lion

A while ago, I remember having customized the Boot Camp drive icon with a pretty simple hack. It was on Mac OS X Tiger. And it was that hack. Now I'm running Lion. Windows 7 is comfy on his Boot ...
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1answer
2k views

Unable for 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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1answer
310 views

Unable to format pendrive, diskutil error

When I insert my USB Pendrive in my iMac i see this message: I tried to format it both with DiskUtility and with diskutil command in terminal but I get this error: iMac:~ User$ diskutil eraseVolume ...
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2answers
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disk full - Mac OS won't boot

My friend has a problem getting Snow Leopard to run because the disk is completely full. I suggested getting into command line mode (CMD+S on boot) and delete some things, but it didn't work (nothing ...
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4answers
266 views

Time Machine External Drive

What factors are important when selecting an external hard drive for time machine backups?
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2answers
480 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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1answer
4k views

Where are notes stored in Mountain Lion

I ha a hard drive that died recently in my macbook, I've replaced the hard drive etc so no issues there. Unfortunately, it appears I wasn't backing up the notes app to iCloud, and I really need to get ...
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4answers
562 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 ...
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2answers
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When does macbook second HD work?

I changed my optical drive with my old HDD and it works great. Now i have a SSD samsung 840 evo 250 GB. The battery doesn't last as long as before, but still works quite well. The only thing it ...
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Is there room for two drives in the 27" 2012 iMac?

I've looked around a bit, but can't find anybody saying whether there is room in the new slim iMac for an extra internal SSD. I used this tutorial about a year ago to add an additional SSD to my Mid ...
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3answers
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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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2answers
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How can I mount an encrypted disk from the command line?

When I type diskutil mount disk3 in the terminal, it says Volume(s) mounted successfully. However, the disk is not mounted and I can confirm this by opening the GUI of Disk Utility.app and also the ...
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1answer
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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 ...
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3answers
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Tracking down frequent (every 20 seconds) SCSI hard disk drive access in 10.7

In a Lion Server (10.7.3 and 10.7.4 tried) system with multiple drives attached to an HPT SATA controller, there is some process that keeps accessing the hard disk drives exactly every 20 seconds. As ...
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1answer
918 views

Is there a HDD/Hard-Drive testing tool for mac?

I just found an external HDD in my shelf and want to sell it :-) Before this, I tried to delete all the files on the HDD, but the disk utility of Snow Leopard aborted with a known error "Disk Erase ...
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1answer
327 views

How fast should my MBP internal drive be?

I'be been experiencing an ongoing (if not precisely measurable) feeling that my MBP is underperforming, and it seems to be related to disk IO. I recently downloaded a disk benchmarking tool, to see ...
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1answer
257 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 ...
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3answers
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Synchronize USB hard drive between Mac and PC

I have a large (750GB) FAT32 formatted USB hard drive and two computers - a MacBook and a PC - and I want to keep synched and duplicate versions of my work folders (images, word documents, videos etc) ...
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2answers
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How can I prevent external hard disk from sleeping when connected to Airport Extreme?

I have a 1TB external hard disk from Seagate connected to the USB port of my Airport Extreme and everytime I need to access it I have to wait some time until it leaves the sleep mode. Is there a way ...
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1answer
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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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1answer
312 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 ...
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1answer
618 views

Apple Sudden Motion Sensor and Hard Drive Upgrade

I'm looking to upgrade a notebook hard drive and wanted to use the Hitachi Travelstar 5K750. Will it work with the Apple Sudden Motion Sensor? Do I have any way of identifying drives that will play ...
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2answers
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Optimal method to test an external hard drive?

I've got an HFS+ formatted external drive that is starting to act a bit funny, mainly causing my mac mini (finder) to freeze up on occassion when accessing it. Fearing imminent failure, what is the ...
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3answers
626 views

Can the hard drive in an Apple TV be upgraded? How?

I own an Apple TV, with 160GB of internal storage. I'm interested in replacing that hard drive with a larger one, perhaps 640GB, or else the largest 2.5" drive I can get that would be compatible. Is ...
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2answers
140 views

Prevent Spotlight from indexing future hard drives

Using Mavericks, how can I prevent Spotlight from indexing all drives except my primary internal drive? In my work, I connect dozens of new drives every week, and I do not want the .Spotlight-V100 ...
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1answer
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How can I do a fresh install of OSX Mountain Lion onto my SSD for my Macbook?

So I just got a SSD for my MacBook Pro (early 2011). My macbook is sluggish and has so much stuff that I don't use anymore and just want to start over from scratch basically. I did a time machine ...
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2answers
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Aperture: Library over multiple Hard Drives

I switched to Aperture some time ago. And right now, the moment has come that I want to save some space on my internal hard drive. What I found on the Apple website is this: I can't seem to find ...
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2answers
3k views

Issues with installing SSD instead of DVD drive?

It is common to replace a MacBook Pro's hard disk drive (HDD) with an solid state drive (SSD), however, that may pose a threat to the HDD if installed in the optical bay instead of the SuperDrive.* ...
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Do 2.5" SATA HDDs in an external enclosure need extra power over USB with Windows?

MacBook Pro 2008 motherboard failed. Upon sending it to an Apple authorized repair center, they confirmed this. They gave me the laptop back so I could open 'er up and get the hard disk out, which I ...
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1answer
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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). ...
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4answers
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Western Digital external hard drive is constantly ejected

I have a 1TB Western Digital external hard drive that I use for Time Machine backups, and recently my iMac has started to randomly eject the hard drive, preventing backups. It tends to happen while ...
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1answer
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Upgrading RAM/HDD in latest MBP [closed]

I planning to buy a 13 inch MBP this month. Is it a good idea to stick to the standard 4GB of ram and 500GB harddrive, and upgrade it myself to 8GB/1TB? This would save me about $350. I have ...
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4answers
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Writing to an NTFS volume is disabled on 10.9.2?

Hi I recently upgraded to 10.9.2 and I cannot write to NTFS anymore - in fact I cannot mount NTFS anymore unless I removed the the lines that allow me to write NTFS in the past in /etc/fstab... I ...
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2answers
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How can I restore my system, using Snow Leopard, after hard-drive replacement?

I had a nearly full 500GB drive in my MacBook Pro, running Snow Leopard. As the near-full capacity was becoming problematic, I bought two 1TB drives, went home, ran Time Machine on one of them, and ...