Questions tagged [hard-drive]

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

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3answers
5k views

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?
4
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1answer
150 views

How should I recover my NTFS partition that I have accidentally deleted on my Mac

I have a 2 TB external HDD that was divided in 2 partition: First partition: 280 GB Second partition: 1720 GB I accidentally delete the second partition. Here are several steps that I already did; ...
4
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1answer
3k 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
615 views

Can't see external HDD partition in Disk Utility

I have a TB external HDD divided in 2 partition: First partition: 280 GB Second partition: 1720 GB Initially, both partitions were NTFS. Then, I formatted the first partition to macOS Extended FS, ...
3
votes
3answers
2k views

External hard drive very slow to load after dropping it and can't be repaired with Disk Utility

Today as I was using my WD HDD, it fell off my corner. After I fixed the thing, I plugged it into the Mac and it loads the HDD but it's very very very very slow. It also does not work sometimes. The ...
3
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2answers
942 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 ...
3
votes
1answer
925 views

135GB of Hidden Space + Snapshot Metadata Tree Invalid error in Disk First Aid

I have a serious problem with "Hidden Space" eating up my hard drive. I'm running High Sierra on a mid-2013 MacBook Air "Core i7" with a 500gb ssd. The last few weeks, something has to been ...
3
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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 ...
3
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1answer
2k views

Can a Time Machine drive have several partitions, or does Time Machine need the whole HDD to itself?

Is it possible to partition and external drive an use only one of the partitions for a Time Machine backup? Or does Time Machine need its dedicated hard drive? (I've never used Time Machine before.) ...
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3answers
15k views

Stop iCloud automatic download to harddrive

How do I stop iCloud from downloading files to my hard drive? I opened up a folder and it immediately started downloading all contents
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4answers
142 views

How would I architecture Network Attached Storage?

This is a sequel (1, 2) question. I'm interested in setting up a home networking solution. One or more individuals would be able to access their accounts from any one of multiple Macs around the ...
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2answers
1k 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. ...
2
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4answers
102 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 ...
2
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1answer
654 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 ...
2
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1answer
742 views

Accidentally used dd on my main OSX drive

I've made a bit of a balls up... When attempting to create a bootable Ubuntu usb drive I accidentally ran dd on my main system drive :( sudo dd if=/path/to/image.img of=/dev/rdisk1 bs=1m I realised ...
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3answers
5k views

New SSD can't be initialized

I have an old Macbook Pro for which I bought a new SSD and replaced the HDD with the SSD. Can't go further, see below. I really don't know what to do. I could return the SSD which, finally, might be ...
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2answers
5k 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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2answers
88 views

Blinking folder icon - safeboot, recovery hd does not work

When I try to start my MBP early 2011 with Mavericks OS installed I get a blinking folder icon. SMC reset, PRAM reset did not resolve the issue. The MBP does not boot into the safe mode too. When I ...
1
vote
1answer
889 views

USB external hard drive is mounted on one MacBook Pro but not another

I have a Hitachi rpm-5400 160GB hard drive in an Orico USB 3.0 hard drive case. The hard drive is formatted as ExFAT. I plugged this drive on my Mid-2012 Non-Retina MacBook Pro and it mounts fine in ...
1
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1answer
846 views

Do I have an SSD and a hard drive on my MacBook Pro?

I looked at the details provided in my system report/storage and I noticed that it appears I have a hard drive of 499.05GB and an additional SSD drive of 499.42GB. Does this mean I have 1TB of data? ...
0
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1answer
6k views

Can I enable FileVault and then partition my hard drive later?

I just bought a 2014 MacBook Pro with a 512GB SSD. I updated to El Capitan today and when it booted up for the first time, it asked me if I wanted to enable FileVault. I chose not to because I wasn't ...
0
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1answer
228 views

How to create an accurate byte-level copy of an SSD to another drive?

TL;DR I need to recover lost files from an SSD but don't have the time to do it right now. How can I clone an SSD to another drive on byte level, including drive areas which the OS thinks are free? I ...
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1answer
670 views

Failed paritiong resizing partition in Mojave via Disk Utility (Planning to add it to Bootcamp) [duplicate]

(Using Mojave 10.14.1 on MBP Mid-2012) I was trying to resize my AFPS partition to add it later to my Bootcamp partition (in Windows) but the operation failed. What I did was to use Disk Utility's ...
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2answers
2k 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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4answers
1k 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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1answer
200 views

Need help deciphering TestDisk results to fix HDD

Background - While trying to use asr in terminal to copy a failing HDD's contents to empty external HD #1, I facepalm set the target as BACKUP HD #2. When I hit enter, asr went through it's normal ...
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9answers
140k 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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8answers
148k 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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4answers
47k views

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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4answers
4k views

Reformat Mac SSD drive so fast - did it really work?

I followed the directions here for erasing my 500 GB SSD drive on a MacBook Pro: How to reinstall macOS I chose the strongest erasing option under the security options. I hit the erase button, and ...
9
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2answers
9k 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 ...
18
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5answers
49k views

OS X can't unmount disk

My 1TB LaCie Rugged THB decided it was a good idea to stop working all of a sudden. If I open it in disk util I sometimes see an actual name of a partition, but most likely it's not the real name. In ...
17
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4answers
8k 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 ...
11
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1answer
30k views

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). ...
10
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1answer
355 views

Moving Time Machine backup between two local disks results in full backup instead of incremental

The Problem After migrating the entirety of a a Backups.backupdb to a new hard drive as recommended by Apple by simply copy-pasting within Finder between two local disks, Time Machine encountered an ...
7
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2answers
2k views

Can I manually put an external hard disk to sleep?

Is it possible to manually put an external hard disk to sleep? Right now, I've already got "Put the hard disks to sleep when possible" checkmarked in the Energy Saver preference pane, and so they ...
4
votes
1answer
10k 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 ...
10
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1answer
8k views

Extremely slow write speed to encrypted external drive on Mavericks

Writing to a fully encrypted USB flash drive on Mavericks is extremely slow. The drive model I used for testing was a Kingston DataTraveler Ultimate 3.0 G3 (64 GB). I tested transfer speeds by ...
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4answers
3k 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 ...
5
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2answers
46k views

Partition problem with APFS containers in macOS High Sierra

As always I'm so impatient and migrating with my main devices to the first developer previews the day they are available. Which as always bring me only problems but I just cannot help myself. So ...
5
votes
2answers
48k views

Mount external HDD readOnly option

I have the following problem: I used the optical bay to use a HDD in my mid 2010 13" Macbook Pro in addition to my SSD. It was working just fine until a few days ago, when it started to get "slower". ...
4
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4answers
666 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 ...
2
votes
1answer
11k 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 ...
2
votes
5answers
85k 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 ...
10
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3answers
21k views

How do I encrypt an external drive with FileVault 2 in OSX Yosemite

Ok, so according to https://www.apple.com/osx/what-is/security/ I should be able to encrypt ANY external drive..."with ease" using FileVault 2. I have a brand new (empty) 2TB Fantom Drive model: ...
9
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10answers
16k 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 ...
9
votes
4answers
2k views

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? I ...
8
votes
5answers
34k 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 (...
7
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2answers
6k 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. ...
6
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2answers
32k views

Move Documents folder to different drive

I would like to move the Documents folder to a different drive. I am running OS X 10.9.4. I am trying to preserve space on my OS SSD.