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

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Can you Recover Data from a Filevault encrypted harddrive externally?

My mac won't boot and it maybe a harddrive issue, but I need to get the data off it, is it possible to recover the data using a set of tools if I know the password and have the appropriate cables?
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1answer
1k 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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1answer
13 views

Why does recovery mode keep failing to install OS X on a new hard drive?

I had a hard drive die in my Macbook Pro (from ~2012) and I replaced it. I booted into recovery mode and tried to install an OS on the new SSD, but it keeps hanging at "installing additional ...
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2answers
10k views

External hard drive not indexed by Spolight on Mac OS X Mountain Lion

I recently bought a new hard drive and it is not indexed by Finder. I tried to get it re-indexed by following this tutorial: http://reviews.cnet.com/8301-13727_7-10330114-263.html and I even tried ...
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1answer
29 views

DIY Fusion drive with 3 drives

Is it possible to build a DIY Fusion drive using 3 drives - 2 HD's and 1 SSD? Will the Fusion machinery optimise on three levels i.e. SSD, then fast HD, then slow HD? I have a mid 2011 27" iMac, ...
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2answers
1k 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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0answers
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Repair an exFAT drive on Mac OS X after it's been improperly disconnected

Very often an exFAT external disk stops appearing in OS X. It doesn't appear in Disk Utility, Finder, diskutil list or About this Mac/System Report/USB. The only way I have found to fix it is to boot ...
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16 views

Delete button for partition not clickable in Disk Utility

I had another partition on my MacBook where I had Windows installed (the partition is called BOOTCAMP). I am not using Windows at all any more, so I would like to delete the partition on my hard disk ...
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4answers
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How can I get my 3rd party SSD to boot El Capitan?

I have a Mid 2012 13 inch MacBook Pro that's been running successfully with a hybrid drive (3rd party) for the last few years. Recently, the operating system crashed and the hard drive is no longer ...
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Western Digital - My Passport Pro 4TB Drive won't stay mounted in JBOD Mode

I have a WD My Passport Pro, currently having issues as I need to encrypt the drive in order to protect the data I am going to store on it. I am aware that this will not be possible with the drives ...
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1answer
1k views

Trouble Mounting NTFS drive on OS X 10.9

Mounting NTFS drives works in OS X natively. Mounting drives with fstab is common and can be seen here and here and here. I was able to successfully do it with the following addition to my fstab. ...
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1answer
20 views

How to mount ufsd_NTFS partition

I have a USB disk and when I try to mount get the following error mount: /dev/disk3s1: unknown special file or file system. diskutil shows /dev/disk3 (external, physical): #: ...
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1answer
50 views

Cannot use Disk Utility to create partition from free space on external USB drive

I have a 3 TB Western Digital red disk in a USB hard drive dock. The drive is GPT, and I have two volumes on it (one volume is "Microsoft Reserved", other volume is NTFS). The other part of my drive ...
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1answer
19 views

Encrypted Hard Disk troubleshooting

I have problems to read an encypted hard disk. Unfortunatly I do not remember if I did encryted with Time machine or Disk Utitlity. I think I did it with the first one (Time Machine) as I used the ...
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2answers
8k 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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2answers
2k 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 ...
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8answers
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How to check if my HD is case sensitive or not?

How can I get information if my HD format is case sensitive or case insensitive? I want to make sure my Mac running Mountain Lion has a case sensitive file system.
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2answers
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external hard drive found only by disk utility, cannot eject or mount

I'm using a Seagate GoFlex that seems to have encountered some trouble. The drive does not appear on the desktop or Finder. I've double checked that Finder > Preferences allows for it to appear in ...
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1answer
2k views

Mac Pro hangs at startup showing white screen with spinning pie wheel

MacPro 1,1; lion? startup hard drive failed (with loud buzzing). Removed bad drive, installed replacement, inserted Lion USB drive, verified new drive using the Lion usb drive, started installation ...
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Time Machine ridiculously slow after El Capitan upgrade

I recently updated to El Capitan, and told Time Machine to backup. It got stuck on Preparing Backup for hours, so I stopped it, deleted the InProgress file, rebooted and tried again. After ~30 mins, ...
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2answers
2k views

exFat Hard Drive not showing up on mac OS X 10.7.5

I formatted a 1TB Seagate USB 3.0 hard drive as ExFat to be used on both a MacBook and a Windows PC. The formatting was done on Windows and there isn't any issue when I access it through Windows. I ...
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1answer
4k views

New Hard Drive Install Failure

I got a problem with my 2012 Mac Book Pro, I'm trying to install a new 750 Go Sata 3 with 7200 t/min WD Black in it. The problem is when i try to reinstall OSx Mountain Lion on it, it didn't find the ...
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1answer
4k views

You can’t change the startup disk to the selected disk?

I am booting my macbook through an external usb drive. At system preferences - startup disk when I try to select my internal harddisk it says: You can’t change the startup disk to the selected disk. ...
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2answers
48 views

Finding suitable SSD for my MacBook Air

I have a MacBook Air (mid-2012, MacBookAir5,2). I'm really far from terminology of this subject, I have no idea what is flash memory and don't know if all MacBook SSDs must have a flash memory ...
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1answer
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I can't boot into Windows 7 on Boot Camp

I have a mid-2009 MBP. A couple of years ago I swapped out the optical drive for an SSD, made the original hard drive a Boot Camp partition and installed Windows 7 on it. It has been a brilliant "best ...
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2answers
952 views

How to install Windows 10 on external SSD that currently runs OS X?

I made the mistake of purchasing a MBP w/ only 128 GB of storage. When I ran out of space on the internal drive, I purchased a 512 GB external SSD, transferred all the data over to the SSD, and now ...
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1answer
31 views

Folder with a question mark on purchased Mac

I just got my MacBook Pro mid 2012 laptop and stupid me did something to it, now I have a flashing folder with a question mark. The previous owner said she accidentally deleted the software when she ...
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0answers
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How to purge all Xcode temporary data?

Is there a tool or method to purge all unnecessary Xcode temporary data? Xcode seems to be creating files each time you build an app or run it with the simulator. I'm not sure what I can delete ...
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1answer
2k views

Time Machine Restore Button Greyed Out For External Hard Drive

I guess I will give the short long story to whats going on. I recently brought my computer (Mid 2010 Macbook pro) in to the apple store cause its been crashing for some time. The first time around ...
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1answer
1k views

Disk problems and reinstalling Mavericks!

This started after I installed a BootCamp Windows 8.1 partition. That partition ran out of space so I decided to not heed any warnings and tried to format my Macintosh HD into free space, 10G of free ...
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4answers
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Is it possible to restore OS X .dmg file to External Drive?

I recently traded in my iMac with 1TB HDD for a MacBook Pro with a 256 GB flash drive. I want to restore my previous hard drive but obviously it won't fit on the new hard drive. Is it possible to ...
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Debugging verbose boot mode

My issue is that a MacBook Pro (mid-2012) started to have problems booting up today so I'm trying to debug the boot process by running it in verbose mode. The problem is I can barely read what it ...
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50k views

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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1answer
81 views

Accidentaly converted from a basic disk to a dynamic one

I got a MacBook Pro (13-inch late 2013 retina) So I installed Windows 7 using bootcamp and all was fine. I then needed to create a 32MB FAT16 partition, when Windows prompted me to convert to a ...
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1answer
29 views

Boot Camp issue

My Windows system is a folder in the Startup Disk PrefPane, but shows an hard drive icon on my desktop. How do I turn it into a hard drive icon in the start up disk? I've tried everything but haven't ...
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8answers
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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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2answers
1k views

Samsung EVO 480 *and* stock hard drive not recognised by Snow Leopard installer

A friend of mine came to me with her Macbook Pro 8,3 (17 inch, 2011). The hard drive had failed, and booting into the recovery disk didn't show a working hard drive. I went out and bought her a ...
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1answer
146 views

Searching through a whole lot of PDFs on an external disk

I do have one Tera of Texts (mostly PDF) which is really really much (something like 100'000 documents). They are on an external USB3 and, of course, spotlight-indexed. When I look by text search ...
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2answers
73 views

Fusion drive is not working although the system can find the SSD

I own an iMac late 2013 with a fusion drive. Recently I installed Windows 8.1 using Bootcamp on a separate partition on my disk. After a few days, the booting process of OS X started failing and I had ...
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1answer
20 views

Fusion drive benefits for Boot Camp?

I've got a late-2015 Retina iMac with Fusion drive. From what I understand, but want to confirm, is that there is no real benefit for Boot Camp as the partition is completely on the HDD side, so the ...
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1answer
30 views

Recovery: OS X Yosemite can not mount NTFS partition but windows can mount it in 10 minutes

I have a Seagate GoFlex 2TB external HDD that stopped working one month ago. The head of this external disk seeks continuously and produces sounds even when it is not connected to the USB port. On OS ...
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2answers
39 views

Missing disk space after repartitioning

I tried to make a partition and then tried to undo it. Now, I don't know how to get the missing disk space back. As you can tell, I have 751.28 GB disk. Macintosh HD and Recovery HD have 557.4 GB. ...
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1answer
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how can i reformat the hdd in HFS+ using Ubuntu without using mac

I have input a HFS+ hard drive which is mac osx into ubuntu because while booting up mac there a error of blinking folder with a question mark so i searched in google and the information say that the ...
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4answers
3k views

There is about 60GB of space being used on my HD that I cannot find

Am I just bad at math? OmniDiskSweep isn't picking up what is using my space. I recently deleted a 60GB drive (not partition) that VMWare Fusion was using, and emptied the trash. Now it doesn't show ...
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1answer
174 views

Partition Map Failed Because No Slices Were Found

I have an external hard drive that I've used with my Mac for years, with no issues. Today I tried to plug it into my work PC to get some files off it (Windows 8), and it wasn't recognized. I tried to ...
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4answers
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9GB com.apple.coresymbolicationd file in Caches

I'm trying to free up disk space, and I came across this: I've read reports of a 600M file, or a 1GB file but never something like this. Is it safe to delete or does rebooting frequently help ...
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2answers
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I want to install Windows 7 on an external drive

I've read two articles about booting Windows from external drives as opposed to a stock Bootcamp install. Here are the links: http://kevtg-compuproductive.tumblr.com/ ...
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2answers
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iMac disk write issues

I have a problem specifically with Photoshop Elements 12 Organiser and the ability to write to the internal drive on an iMac 5k with El Capitan. I have full read write access to the files on the disk ...
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0answers
55 views

Can't make new partition due to error “volume Macintosh HD was found corrupt and needs to be repaired”

When I run Disk Utility on my 2012 MBP (SSD, running El Capitan) I sometimes get the error: The volume Macintosh HD was found corrupt and needs to be repaired. Other times, I get no errors. ...
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1answer
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Can't launch or uninstall Disk Drill

I've got these two icons in my menu bar, which appear to be an application called Disk Drill (see red rectangle): Basically, I want to uninstall Disk Drill and have these two icons removed from my ...