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

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How to find file system of external hard drive?

I have plugged external hard drive. It does not show in Normal Mode. I can see its Type Name and Identifier thru terminal. I want to find the file system of the external hard drive. I want to format ...
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68 views

Setting Up Raid iMac

I have one lacie 2big thunderbolt 4th unit setup as raid 1. I want to add a lacie 2big thunderbolt 4th unit. How do I get it set up so the entire unit 1 is mirrored onto unit 2(Raid1)?
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130 views

escape the target mode

I tried to install Windows on my Mac Pro but it failed because my disk needed to be repaired; it was suggested that I hold cmd + r during a restart. I tried that but when it restarted I was showed a ...
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318 views

Resizing without DESTROYING the second partition of a disk

I have a disk that was partitioned in two. The first partition was 1.8TB and is called TIME MACHINE. The second one was 1.2 TB and I call it TOSHIBA 1.2TB. I would like to reduce the first partition ...
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128 views

Could two WD Passport Ultra 1TB drives be used in the OWC Mercury Elite Pro Dual mini enclosure as RAID 1?

I'm thinking of buying one more WD Passport Ultra 1TB (I have one already) so that in the near future I could disassemble the two Passports and install the 1TB drives into the OWC Mercury Elite Pro ...
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3answers
4k views

Why doesn't my Mac Pro see my new 4TB SATA drive?

I purchased a Seagate ST4000DX001 4TB SATA Hybrid Drive (SSHD) and installed it into my Mac Pro (six core 3.33 GHZ MacPro5,1) in one of the internal SATA drive bays. However, the system didn't see it ...
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1answer
1k views

Disk Utility not opening in Mavericks

I had used a Seagate external HD as Time Machine back up for a year or so. Since I got a gift of a better EHD now I wanted to erase all data in the old EHD. I thought a simple Format through Disk ...
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376 views

Entering Time Machine on an external drive does not work

If I open an external drive, or an folder on that drive, in the Finder, then enter Time Machine by clicking on the menu bar icon and selecting "Enter Time Machine", then Time Machine runs, but it ...
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1k views

Shared library between Macbook Air, iMac, Airport Time Capsule

My Early 2008 iMac alu 24" HD drive has finally died and I'm in the process of replacing it. I've also recently got a 2013 Mac Air. The MacAir SSD drive is small so I want to share the iTunes/iPhoto ...
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1k views

iMac Startup I/O Error Despite Successful Disk Repair

My Early 2008 iMac with OSX 10.8.5 no longer boots beyond grey screen with spinning gear. Verbose mode shows a load of I/O errors. Disk Verify/Repair run via recovery partition completes successfully, ...
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100 views

USB drive accessible from Ubuntu laptop but can't find on OSX using Disk Utility or `df``

I have a 3T SATA hard drive in a USB enclosure. I can see it when I connect to my Ubuntu laptop, but I can't get it to be seen on my OSX desktop. My goal is to format from my Mac. I've tried giving ...
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31 views

Software to allow saves to external drive when it's not present?

I'm wondering if software for this purpose already exists. What I want to be able to do is to be able to save to my external drive when it is not connected to my computer. By this I mean I want the ...
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1answer
205 views

Reading a Mac IICi and SE hard drive on another computer

I have a Macintosh IICi and SE hard drive. My understanding is both are SCSI. I know one of the two is a Quantum P40S (the one from the mac IICi) I also have a PowerMac G4 that works very nicely and ...
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1answer
2k views

Unable to transfer files from external hard drive

Problem: I'm trying to transfer about 168 GB of files from an old Windows XP machine to a newer MacBook Pro running OS X 10.6.8. I successfully copied the files from the XP machine onto a 2TB ...
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3answers
561 views

New Seagate hard drive freezes MacBook Pro

I have a mid-2009 MacBook Pro 2.53ghz Core 2 Due with 8 Gigs of ram running Mountain Lion. I am attempting to upgrade the hard drive due to running out of space. I picked up a Seagate Momentus 750gb ...
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1answer
154 views

fsck_hfs keeps crashing when trying to repair my Time Machine volume

I've got my Time Machine volume (direct attached, USB) corrupted by accidentally flicking the switch while it's running. Now neither Disk Utility nor fsck_hfs can repair the drive. Investigating it ...
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1answer
173 views

Stress test a disk

I have a 1Gig disk that's about 3 years old. The other day it went south, with OSX telling me that it could not repair it and leaving it in read only mode. I was able to salvage everything on it. Now ...
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1answer
2k views

How to resize Mac OS Extended (Journaled) partition after linux messed it up?

I've tried to use Ubuntu on my macbook pro (6,2), but it was a total and abject failure, mainly due to poor hardware support. So, I have given up on my little experiment and just deleted ubuntu and ...
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1answer
51 views

HD failure - recovery possible if system can't see drive?

I've got a 2.5" SATA HD in an enclosure, plugged into a Mac Pro (trying to see if I can use Data Rescue II to recover anything). Unfortunately, my system is not seeing the disk, either in Disk ...
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1answer
421 views

how do I reset or clear the list of Volumes?

I am running into this problem when I accidentally remove a USB drive without properly ejecting it or similar and then plug it back in. When my drive is plugged back in it will apear normally, for ...
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1answer
238 views

Inconsistent disk capacity reports in OS X - I'm missing 365GB of my 2 TB… :(

Coincidentally I have noticed that the disk capacity reports in "About this Mac" and the Terminal when running diskutil list both report inconsitent capacities for an external hard disk drive. This ...
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1k views

Eject disk and get error message “Disk not ejected properly” when unplugging disk

I have an external USB Western Digital disk I use for Time Machine backups. I eject the disk, the disk icon disappears. I wait a few minutes, then unplug the disk. I end up with a "The disk was not ...
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1answer
291 views

Will internal HDD spin down when a Mac is booted from another internal SSD?

On my MacBook Pro, I am planning on removing the optical drive and adding an SSD to the mix. Since Apple doesn't support this configuration, I don't find any official documentation covering SSD in the ...
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1answer
623 views

Can't do anything with external hard drive, “.Trashes” is probably the boogyman

I bought an external Samsung hard drive today. But I'm not able to do anything with it. Here are the problems I'm having: I can't put anything on the hard drive. Finder gets stuck at 'preparing ...
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398 views

How to use a 3 TB hard drive on a MacBookPro7.1

I have bought this hard drive: Seagate ST3000DM which is a 3TB 3.5" hard drive. When I connect it via a USB2 docking station, here is what OS X sees: Disk Description : ST3000DM 001-9YN166 Media ...
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982 views

What type of bracket to use for HDD/SSD in optical bay? (MCE vs. OWC)

Looking for a bracket/adapter/caddy for installing a HDD/SSD where the MacBook Pro SuperDrive used to be. There are two general types: 1) Minimalist open-type brackets (in the truest sense of the ...
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1answer
251 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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3answers
1k views

Mac OS X with swap turned off uses 6 GB of space in a few hours of heavy use

I have few GBs (5,38 GB at the moment) of free space on my hard disk (MacBook Pro 2010, 10.7.5). Few hours after I turn on/reboot my computer, the free space slowly goes down to zero and the system ...
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3answers
3k views

How to partition an SSD that fails with error 69888 - couldn't unmount disk?

I erased the SSD drive in my MacBook and was reinstalling Lion when it failed about 75% through the install. Now in Disk Utility, sometimes I see the SSD drive and sometimes I boot and it's not there ...
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2k views

HD accidentally reformatted to MBR, how to get back to GUID?

So in trying to create an MBR partition of my hard drive which I could then use to boot a solaris-derivative OS using rEFIt, I messed up. Rather than a hard drive with a primary GUID partition map ...
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280 views

Latest Model 13" MacBook Pro i7 - Disk slow beyond belief

It seems that all disk operations are 50x slower. Reboot time = 15 minutes. Dekstop freezes every time disk accessed. Is there anything I can do? The machine is virtually unusable. This has been ...
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125 views

Automatically move old music tracks on iTunes to external HDD

My media are taking most of my internal hard disk drive. I wanted to know if there is a way to automatically transfer music that I do not listen to regularly on my iTunes folder to an external hard ...
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1answer
895 views

Disk will not mount, but shows up on System Profiler

My internal 250GB failed on me the other day, so I replaced it with a new SSD and HDD combo. I have the failed disk connected via USB/SATA, but it will not mount. However, it shows up under System ...
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1k views

Changing User permissions - Seagate Hard Drive

All of a sudden, my hard drive has stopped working. I can only view its contents but can't store anything new now. I also can't change its permissions. What is the issue?
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2k views

How can I copy a file from a CD when Finder reports error code -36?

I have a CD. I copied the whole CD to another location - except for one file. When trying to copy that particular file, I get following error: The Finder can't complete the operation because some ...
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2answers
7k views

How can I partition my Macbook Pro's hard disk?

I'm about to install Linux on my new Macbook Pro. In order to do this, I need to resize my Mac OSX partition to allow some free space for Linux. I've booted into the Recovery HD and started "Disk ...
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2answers
1k views

How can I repair a hard drive that Disk Utility and Disk Warrior can't fix?

I have a Mac Pro running Mac OS X Lion, and one of my hard drives has acted weird since attempting to repair permissions. I used Disk Warrior, but it says the HD can't be rebuilt. When I try to format ...
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1answer
761 views

Upgrade SATA connection on MBP 3,1

When replacing my HDD in my MBP 3,1 with a SSD (SATA3), I noticed that the SATA1 cable can be fully removed. Thus I thought, that it might be possible to replace the SATA 1 cable by a SATA 3 cable in ...
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1answer
307 views

For some reason I can't open files on drive

I can't open the files on certain drive that is formatted as ntfs. I have Tuxera installed however. Here is an image on how they look: The file with a lock is password protected as it should. Any ...
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2answers
437 views

Bootcamp - Multiple Windows installations, how do delete one?

I've got a Mac Pro with 3 hard drives: 1 x 7200rpm 640GB - 1/2 for OS X - 1/2 for Windows 7 (Bootcamp) 2 x 5400 Western Digital'Eco-drive' (runs like a dog and is only useful for backups and ...
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1answer
695 views

Can't copy folder with files from external hard drive because of permissions?

I can't copy a folder (with files) from an external hard drive because of permissions problems. (You do not have permissions to the files in this folder.) However, those files were created by me (on ...
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1answer
2k views

My Mac Pro boots into recovery mode every time it boots up

My Mac Pro boots into recovery mode every time it boots up. I have to select the start-up disk when in recovery mode. How can I make so it starts up in Mac Os X Lion every time without it going into ...
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2answers
300 views

Disk space disappeared, what happened?

So yesterday I had to jump through some hoops getting Xcode set up, in the end I had to install it once, uninstall it and then install a different version. At the start I had ~78GB free. After the ...
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3k views

Accessing events on external drive in iMovie '11 on Lion

I have my iMovie events stored on my external harddrive (located in a Synology NAS). It worked like a charm with iMovie '11 on Snow Leopard. I then received my new MBP with Lion and the external ...
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118 views

What is the position of HD Heads during a spin down?

So I'm debating between powering down and sleep mode when toting my macbook around in my backpack. Apple says the HD 'spins down' when in sleep, which obviously means is not spinning. But are the ...
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204 views

How to check if internal HDD spindle is off after unmount

I use SSD instead of optical drive in my Macbook MC516LL, so I have bunch of reasons why I wants to keep HDD's spindle off: Preserve HDD from shock Reduce energy consuming Reduce overall system ...
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140 views

Hard drive on latest macbook pro 17 accessed too often

I have the latest macbook pro 17 and it seems no matter what I do, particularly noticeable when I simply scroll up and down on a window, I hear the hard drive tapping away like it's being accessed or ...
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1k views

Issues with replacing the internal hard drive in a mid 2007 macbook

I have a white 2007 MacBook with a 2.0 GhZ intel Core 2Duo processor with a 80GB Serial ATA @ 5400 rpm. Recently my hard drive crashed so I got a new 500Gb Western Digital AV-25 WD5000BUDT 500GB 5400 ...
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464 views

Which 2nd hard drive for my MBP 2011?

I am looking at options for a 2nd hard drive (SSD is primary) for my 15" MBP 2011, i initially was going with a 750gb 5400rpm drive but i'm thinking about either of the following 7200rpm drives. ...
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634 views

Can't gain write access to secondary hard drive root-level folder

I have a second hard drive installed on my Mac. On its several root-level folders there's only one I can't get write access to. I've tried right-clicking it, select "Get Info", unlock it, click the ...