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

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Files moved partially and the rest gone!

I moved about 100GB folders of pictures from one external hard to another one. In the beginning of the process the finder breaks down and didn't respond. None of the relaunch solutions worked! So I ...
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0answers
29 views

access crashed mac hard drive through USB connected to PC

i pulled the hard drive out of the mac and connected it via USB to my PC. I have downloaded and tried to view the disc using MacDrive10 and HFSExplorer. neither of them show that the disk is even ...
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1answer
179 views

MacBook does not mount, does not boot, does not read drive

When i press alt on my MacBook during startup, it only shows a disk that i used to have Windows installed (which is now empty). I erased that disk when i was last logged in on OS X. Then i tried to ...
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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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1answer
292 views

Bootcamp + Custom hybrid MBR = PAIN

I installed OS X to my MacBook from scratch. I mean used USB stick with installer and fully erased disk. Then I created 5 partitions: One for OS X, one for Windows, two for Linux and one for Data: | ...
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2answers
369 views

Partition map rebuild

I have an external hdd that doesn't mount anymore. I think I screw up with all the research I done and things I try. I have vital info on this hdd and I'm really afraid to lose it. I tried this: ...
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19 views

Can't remove partition on Macbook

I can't delete a partition on my macbook. On my main hard disk, I selected the partition I want to delete however I can't click on the '-' symbole. I already read a topic talking about a similar ...
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1answer
104 views

Can a MacBook Pro (Retina, 13-inch, Mid 2014) have their hard drives upgraded

My friend has a MacBook Pro (Retina, 13-inch, Mid 2014) -- she wants to install a magnetic 2.5" HDD. Can I install any such drive or do they have to be apple compatible hardware.
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8 views

Time Machine backup from new upgrade [duplicate]

I recently wiped and upgraded my computer to El Capitan, and previously I used MyPassport for Mac to backup my information on TimeMachine from my Yosemite account. Now that my computer is wiped and "...
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0answers
27 views

2 Disks with the same name, how do I delete one?

I initially boot-camped a disk into a windows partition, and wanted to delete it. Initially I thought formatting it to free space would work, but it didn't. I tried again and accidentally formatted it ...
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0answers
15 views

Why are extenal HDDs attached to my TimeCapsule shown as empty?

I have attached an external USB HDD to my TimeCapsule. The disk is HFS+ formatted and contains some 100GB of data. When I mount this disk on my Mac, via the TimeCapsule, it shows up as empty. When I ...
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1answer
50 views

Why is my iMac (late 2013) HDD so slow?

My iMac's hard disk has been slow from the start. But recently it is becoming unbearable. Disk read and write speeds are consistently below 50 MB per second, without any applications producing any CPU ...
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1answer
204 views

How to move my Photos library to internal drive to use iCloud Optimize space feature

I recently finally imported my photo library into Photos from iPhoto. I have my library stored on an external drive since my internal 256gb has been full for awhile. Now that it's in Photos, I went ...
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0answers
50 views

Time Machine Partition gone from external hard drive, can't repartition

I've got a 1TB external drive which used to have two partitions: One formatted in NTFS to share files between Mac and Windows, and one for Time Machine Backups. I haven't used it in quite some time. ...
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0answers
96 views

Why my Mac is showing only 250 GB out of 500 GB?

I have MacBook Pro (13-inch, Mid 2012) It comes with a 500 GB hard but today when I checked it it's only showing 250 GB. Please tell me why is that? Macintosh HD: Available: 81.57 GB (81,570,...
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1answer
239 views

Clear “Disk2” “OS X Base System” before USB boot OS X install

Machine is MBP E-2011 500GB hybrid hard drive. Operating system is OS X 10.10.5 Yosemite. I've encountered system issues that are difficult to resolve and have decided to reformat and reinstall OS X. ...
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0answers
138 views

Error installing OSX El Capitan

I am trying to install OSX El Capitan in a Mac Mini but I get the error: OS X could not be installed on your computer! A disk with a mount point is required Quit the installer to ...
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1answer
46 views

Cant recover from Time Machine Disk because [UPDATE NEEDED]

I have an external drive with a bunch of backups and I want to make a restore from that disk. I've always been able to restore by starting the computer while pressing the option key and selecting the ...
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1answer
180 views

Can't erase SSD on main bay

I have a MacBook Pro mid 2011. I've installed a SSD on the main bay, removed the optical drive and installed a caddy with the a regular HDD on it. The OS was installed on the SSD. This setup works ...
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2answers
165 views

Switching MBP from hard drive to SSD

I have a mid 2010 13" MBP that I am wanting to last me a couple more years. It was suggested I get a SSD to replace my hard drive, so I bought it but need to know some stuff before switching to it. ...
3
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2answers
168 views

Accidentally changed owner of /var system folder recursively to myself

Long story short, accidentally I ran sudo chown -R myusername /var/ and now my mac won't boot anymore (after entering user password for hdd decryption loading bar is slowly filled and after it gets ...
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0answers
54 views

MacPro internal HD unreadable when moved to external USB Dock - and vice-versa

Since I just installed a NAS, and I want to transfer several TB from my Mac Pro's internal hard disks (4 of them), I wanted to make it faster by connecting those hard disks directly to the NAS using ...
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1answer
72 views

Cannot extend partition after failed bootcamp install

I got an error while trying to install Windows 10 on my Mid 2014 Macbook Pro via Bootcamp Assistant. The error occurred whilst partitioning the disk: Your disk could not be partitioned. An error ...
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0answers
52 views

diagnose possible issue with MBpro 2012 running very slow

tl;dr Can a MacBook Pro become unbearably slow because of hardware issues, e.g a hard-drive failure? How can I best diagnose this? I own a MacBook Pro from 2012, which recently has become unbearably ...
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1answer
44 views

How to run current mails from MacBook and access or search old mails from an external hard drive?

I have a large number of emails on my MacBook Air. I want to shift all my old mails into an external hard drive and delete the same from my MacBook to save space (47 GB). Then I would like to continue ...
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1answer
1k views

External disk - Unrecognized file system (-69846)

I have an external storage with 2TB that was working nicely. But since last week, when I unplugged the USB before eject it, the disk is not readable anymore. When I insert USB, I can actually see ...
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1answer
102 views

Recover deleted files from MacBook Retina's SSD

I need to recover deleted files from my MacBook Retina. The files were deleted by an app update and didn't make it into the Trash. Is it possible to recover files from an SSD? I have used programs ...
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2answers
3k views

Can't Delete Partition

I created a partition to run Snow Leopard on my computer running El Capitan and no longer need it. I allocated 20GB to that partition. Here's what I've done. I first go into Disk Utility, select my ...
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1answer
375 views

Cannot unmount disk0 resource busy

I am unable to wipe my hard drive and install new OS X as the resource is busy. I would imagine this is because I have Recovery open on this disk and that's why it is busy. I've tried: diskutil ...
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1answer
827 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 ...
4
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1answer
586 views

I just overwrote my folder while mounting a hard disk drive. How do I undo/recover it?

I was trying to mount a Linux filesystem on a Mac and accidentally mounted it to my ~/Documents folder using a utility ext4fuse. Below command is the issued command: sudo ext4fuse /dev/disk2s7 ~/...
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64 views

HD fine, SATA cable fine, but MBP internal won’t mount/boot

I’m looking for some advice regarding a specific problem with a MacBook Pro mid-2009 running the latest version of El Capitan. The basics follow, but I have shared details of the troubleshooting ...
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2answers
64 views

Will it do any harm to cannibalise an old hard drive as an SSD enclosure?

I have an old G-Tech Mini portable hard drive (FW800, bus-powered) that I don't need any more, so as an experiment I took the actual hard drive out and replaced it with a 512GB Crucial M4 SSD. I would ...
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2answers
119 views

Unable to copy OSX Installer from external drive to Mac

As usual I wanted to prepare bootable USB with OSX. Some time ago I've made a copy of my Mavericks, Yosemite and El Capitan to external drive. I wanted simply to drag & drop El Capitan to prepare ...
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1answer
11 views

Running Application From External Hardrive on a mac

I have copied my application to external my hard drive but when I run it it copies the application to the application folder on the mac and then runs.
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1answer
30 views

MacBook hard drive formatting

I removed Filevault to resize the main partition. I had about 320 GB of data on my hard drive so I tried to reduce this partition. The partition wouldn't budge so I closed Disk Utility and shut down ...
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1answer
109 views

Macbook Pro late 2011 version won´t boot up

Hi guys I have been searching the forum and haven´t seen a solution to my problem therefore i will start by explaining what happened. Last night all of a sudden my mac froze, the mouse would move but ...
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4answers
77 views

How can I find what is using the rest of my drive?

I am using a Macbook air. 64GB. My user directory has used 20.47GB Disk Utility shows 'Other' is 41.33GB and I only have 2.9GB free. What tools or command line commands can I use to find out what ...
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1answer
38 views

I had 250 GB free on my hard drive a week ago, I have done almost nothing and now it's 80GB?

I have only browsed the internet, and added a few files around 2GB. When I look in / (with hidden files) and take all the sizes together it just becomes about 730, but I have a 960GB hard drive with ...
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38 views

Is it possible to use diskutil to manipulate the read/write buffer of the SSD portion of the fusion drive?

Has anyone been able to use diskutil to manipulate the Core Storage LVM into increasing the size of the read/write buffer of the SSD? Currently the Fusion Drive keeps 4 GB free for new reads/writes. ...
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1answer
38 views

My MacBook gets stuck but still has 44 GB of storage left

My MacBook has 125 GB storage space (other 125 GB is for Windows). It still has more than 44 GB available but it gets stuck every two hours. I have tried all the methods I can find and have deleted ...
2
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1answer
3k views

OSX El Capitan / Not Recognizing USB Hard Drive

I updated to OSX El Capitan a few weeks ago, and ever since I did so, my computer is having some issues with my Seagate USB 3.0 hard drive. In terminal, when I use the disk utility, the drive shows ...
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756 views

Finder reports error code -36 when copying some files

I have a 4.6GB file on my hard drive. Today when I tried to copy it to another machine through network, I got the following error message from Finder halfway through the copy: The Finder can't ...
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0answers
64 views

My MacBook 2012 has sleep/wake problems with SSDs as internal drive

Whenever I have an SSD (crucial mx100 or samsung 850) as my internal hard drive, my macbook has problems with sleep/wake. If I unplug my macbook and let it sleep, the hard drive does not wake up. It ...
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75 views

Can I change the filesystem of a drive from ext4 to hfs+ without formatting?

So my one drive is ext4 formatted but I would like to read and write to it from OS X 10.9 The only thing I can do is use osxfuse 2.8.2 to make the drive read only at the moment.
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Messed up 3TB Fusion Drive Partitions (on iMac Late 2012)

I found one of the threads around here where you helped some guy with getting the Fusion drive back together after a failed attempt of using the Bootcamp on a Mac machine. Messed up 1TB Fusion Drive ...
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71 views

Encrypted hard-drive I can't reformat in Disk Utility

I have an external HDD I wish to reform (erase) so I can put inside my MBP and make a DIY fusion drive. I've done the fusion drive before but Apple made me remove it for a logic board replacement. ...
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1answer
12 views

Transfer capacity between two partitions

I have created two partitions: System 850GB Data 150GB what I actually want is: System 200GB Data 800GB ...however, disk utility doesn't let me either merge these two partitions or transfer ...
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1answer
62 views

Did something wrong with partitioning my SSD

I tried to make a partition for Windows on my Mac by using Apple's Disk Utility, because bootcamp already showed me that it didn't work for some reason. But now I'm stuck with a 70 gb hard disk, and I'...
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2answers
565 views

Drive does not stay mounted

I created an encrypted RAID 0 disk following Why doesn't FileVault work on a RAID volume? on a WD My Passport Pro $ diskutil cs createLVG TimeMachineLVG disk5 Started CoreStorage operation ...