Questions tagged [hard-drive]

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

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6
votes
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.
5
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4answers
12k views

Macbook's harddrive free space changes seemingly randomly

Over the last few days my hard drive has gone from a few GB of free space, to zero KB, absolutely full. I then deleted about 1GB of files, and now the free space has gone down to 640MB, and then went ...
5
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4answers
23k views

How to upgrade firmware and reperform a Samsung 840 Evo on a Mac

i got one of these Samsung 840 Evo Basic 500GB on an iMac (used externally in a TB case - standalone, not Fusion). I know there's a firmware update out which is already available for Mac users too ...
4
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2answers
9k views

How to let MacBook Pro recognize my external hard drive as internal hard drive?

I'd like to install Windows 7 on my MacBook Pro, but as the internal hard drive cable is not working, I'm using it with an external hard drive plugged in which OS X is installed on. When I try to ...
4
votes
1answer
46k views

How do I fix a corrupted USB drive on OS X?

I accidentally bumped the drive while repartitioning it and it unmounted. After that when I tried to repartition with Disk Utility I got Partition Failed with the error: Could not open device Now I ...
4
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2answers
10k views

High Sierra disk space issues

Am I missing something with my hard drive space? I'm running macOS High Sierra 10.13.1 on my MacBook Pro and trying to clear some disk space to install something. Disk info says I have 30 GB free ...
3
votes
1answer
4k views

Is it a good idea to seal off the optical drive bay after installing a second HDD?

When installing a HDD instead of the SuperDrive: Does the bracket, which holds the HDD, seal off the optical drive slot in the unibody? If not, it seems that debris and dust could get in. (I guess ...
3
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2answers
3k views

Deleted Windows Through DiskUtility, 100GB in “Free Space”, Unable to Combine to Main Partition

I deleted bootcamp with Disk Utility and now have lost 100GB of space that I can't recover. macbook-pro:~ kevin$ diskutil list /dev/disk0 (internal): #: TYPE NAME ...
3
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2answers
6k views

Why does my mac not have free space even after I delete files?

Today I want to install Catalina but it requires 17 GB of disk space, and I only have 8 GB. So I started to delete files but only found out that the disk space was unchanged or even shrinked more ...
3
votes
3answers
564 views

How to install or port data to a Fusion / Hybrid / SSHD drive

I have a late 2012 Mac mini that came with a 500 GB HDD installed from the factory. It's almost full so I want to upgrade it to a 1 TB Fusion Drive, as the cost for a 1 TB SSD is still steep. The Mac ...
3
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3answers
3k views

Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...
3
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3answers
3k views

Boot up error prohibitory sign flashing folder with question mark

3 weeks ago my hard drive failed so I bought a new one. (Macbook pro late 2011) 5 days ago, the new one flashed prohibitory sign, flashing folder with question mark. Every once in a while I could get ...
2
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1answer
946 views

Paragon Driver for Seagate

I'm using MacBook Pro with Mountain Lion (OSX version 10.8.5) and I want to copy some data from the MacBook Pro to an NTFS formatted external hard drive. I know that we can use the paid solution from ...
2
votes
1answer
44k views

Mac boots into log on screen quickly but takes long time to log into account

I just replaced the stock OEM hard drive on my 2010 macbook pro 15 inch with a Samsung 840 Pro SSD 256GB and installed Yosemite on it from scratch with USB (the first time i am using Yosemite). Now ...
2
votes
3answers
10k views

How can I tell if my iMac's hard drive is dying?

A couple of days ago, my three-year-old iMac locked up. When I rebooted it, it only displayed a folder icon with a flashing question mark. After a couple more reboot attempts, it booted. I ran Disk ...
2
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5answers
32k views

How do I fix my SSD after installing Yosemite and Enabling TRIM? No boot & can't erase

I recently upgraded to Yosemite, enabled FileVault and foolishly enabled TRIM (had no idea it wasn't supported). Upon restart, my machine gets the grey screen with the crossed-out circle of death. ...
1
vote
1answer
2k 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 ...
0
votes
4answers
21k views

Need to replace a hard drive in a macbook

I have been asked to "replace a hard drive in a macbook". I'm able to physically swap out the drive, but I have no idea how mac software works. I have some questions: If I put in a new hard drive, ...
0
votes
2answers
9k views

OS X Snow Leopard - Can't boot from HD, Target Mode or CD

Today my computer started getting really slow and freezing alot, so i rebooted. HOwever it won't boot up again, keeps getting stuck on the grey screen. Here's what i've tried: Startup in safe mode -...
14
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4answers
41k views

Disk Utility won't erase my USB flash drive (“Couldn't open device”)

I am willing to dual-boot my MacBook Pro (13-inch, Early 2011) macOS Sierra to install Ubuntu. I am having some trouble with my USB flash drive when I try to erase it using Disk Utility. It says "...
12
votes
4answers
26k views

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 clear ...
10
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1answer
4k views

Prohibitory sign on boot after Sierra update, can't mount disk anymore

A few days ago I decided to update to Sierra from El Capitan on both the disks on my MacBook Pro (mid 2012); the update on my SSD went without a hitch so I decided I'd update my other disk, too. I ...
8
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3answers
2k views

MacOS Sierra - Cannot find what is using all disk space

My Macbook Pro has run out of disk space, and I cannot find out why. I have minimal Applications and user data. Output from df -h Filesystem Size Used Avail Capacity iused ifree %iused ...
8
votes
1answer
925 views

Can I Recover an Erased Time Machine Disk?

I erased (not deleted) the entire Time Machine disk by accident in Disk Utility instead of another disk. Under "Security Options" it was set to "Don't Erase Data", so I would think that it means the ...
6
votes
2answers
176 views

What are the risks with low disk space on a Mac?

I've seen some suggestions about not allowing free disk space to go critically low or ... to have no less than about 15% of your drive's capacity free ... Currently, I've been silencing the "disk ...
5
votes
2answers
3k 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 ...
5
votes
2answers
3k views

APFS partition inaccessible, container missing

I'm running macOS Mojave on a late-2015 4k 21.5" iMac. I have lost access to my internal hard drive, but I can use my iMac by running macOS from an external drive or through recovery mode. When I ...
5
votes
1answer
992 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 ...
5
votes
4answers
7k views

Disk structure error reported in Onyx but not fixable via the Disk Utility in Recovery Mode

On Yosemite 10.10 Onyx returns the following error: Error: -69845: File system verify or repair failed Underlying error: 8: POSIX reports: Exec format error The disk needs to be repaired. I ...
5
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3answers
333 views

Time Machine External Drive

What factors are important when selecting an external hard drive for time machine backups?
4
votes
1answer
9k views

How to merge two partitions on external hard drive when the “partition” option is greyed out?

I have an external hard drive that is connected to my computer by a SATA/eSATA cable. Diskutility recognizes the hard drive as two separate drives as shown in the following two images: I can't seem ...
4
votes
3answers
18k views

Clean install of Yosemite problem

Hopefully someone can help me. I've tried so many options. I purchased a used MacBook Pro, late 2011 model. The person I purchased it from said he wiped the hard drive, but when I got home, it seems ...
4
votes
2answers
88k views

How to disable Time Machine for an external hard drive

My wife has a MacBook Pro and two external hard drives; both of which currently contain a Time Machine backup of her MacBook Pro hard drive. Now she wants to "turn off" Time Machine for one of her ...
4
votes
3answers
9k views

High Sierra won't install: for the boot disk it says: “This disk cannot be used to start your computer”

I have a macbook pro late 2012, single stock SSD, Sierra installed with latest updates. I am trying to install High Sierra. When I go to select the disk to install on (the current, normal boot ...
4
votes
1answer
8k views

Can I move Applications to another partition?

My Startup disk partition is just 20 GB and I'm running out of space. What's the safe way to transfer Applications folder to the other partition? Can I just move all apps into a folder on the other ...
4
votes
1answer
2k views

Fusion Drive: free space on SSD

Is there a possibility to find out how much storage is free on a SSD of a Fusion Drive disk (SSD + HDD as a logical device)? The structure I use is this one here: $ diskutil list /dev/disk0 #: ...
4
votes
1answer
1k views

diskutil list shows 20 disk partitions, I only know 3, what are the rest?

Following the post FFFFFFFF problem with hybrid partitioned drive, not able to fix with the guide in other topics, diskutil list gives me the following big list of disk partitions, what are the /dev/...
3
votes
2answers
2k views

Is there a way to change order of physical disks in Corestorage

I upgraded existing system to a "Fusion drive" - corestorage volume - consisting of existing 300GB HDD and new 120GB SSD. Instead of creating a new corestorage drive I went with the route of ...
3
votes
1answer
3k views

Huge system file size CloudDocs

Im on a MacBook Pro (15-inch, 2016) running 10.13.5 (Latest High Sierra ) Here is a screenshot of my storage tab : As you can see the system takes quite a lot of space. After using an app called ...
3
votes
1answer
21k views

Will 'Internet Recovery' necessarily erase my hard drive?

My Mac is booting to the 'question mark' folder. I option-booted to 'Internet Recovery'. Before I proceed, I would like to know: Will 'Internet Recovery' necessarily erase my hard drive? Can anyone ...
3
votes
2answers
18k views

Install OS on iMac with blank hard drive

Is is possible to get a late 2010 iMac with a blank/new hard drive up and running with the latest OS and XCode? All the answers I've seen involve duplicating or restoring an existing OS. Is there a ...
3
votes
1answer
7k views

Unable to adjust partition of USB drive with Mountain Lion Disk Utility

I have a 500 GB USB drive, which I once partitioned into two parts: one encrypted—Mac OS Extended (Journaled, Encrypted), and the other not—Mac OS Extended (Journaled). Now I want to change the ...
3
votes
5answers
31k views

MacBook Pro 2013 hard drive upgradable?

My MacBook Pro late-2011 model was recently stolen when someone broke into our car. Luckily there weren't too many other items in the car and my computer was fully backed-up. I am looking for a new ...
3
votes
2answers
12k views

MacOS High Sierra: how can I merge 2 partitions into one?

Well, I've got a little problem with my SSD. I had Windows installed through the bootcamp, when macOS offered me a High Sierra update. I've updated. But when I wanted to remove Windows, I could not ...
3
votes
1answer
114 views

External SSD may have failed. Options?

This is my first question on AskDifferent. I'm a photographer and have been using an external SSD to keep my Lightroom Library (develop and album metadata only, the picture files are on other devices)...
3
votes
3answers
839 views

Is disk image encryption slower than partition encryption?

I am considering two options to encrypt some data: add a new encrypted partition add an encrypted disk image Which option is faster in terms of disk read/write speed? I suspect that an encrypted ...
2
votes
1answer
3k 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 ...
2
votes
4answers
22k 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 ...
2
votes
2answers
3k views

Help partitioning “free space” with utility disk

I've been trying to partition my harddrive to have ~50 gb of unallocated space (right now there's one partition with the operating system on it, so I would like to have that plus the free space). This ...
2
votes
2answers
11k views

Why was my drive not converted to APFS while installing macOS High Sierra public beta

I was wondering why my drive wasn’t converted to APFS after installing macOS High Sierra public beta. I tried to convert it to APFS after the fact, by booting into Recovery Mode and opening Disk ...