Questions tagged [hard-drive]

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

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Macintosh HD is locked - Unlocking with Disk utility First Aid taking 12+ hours and still not completed

I have a problem with a new re-installation of Catalina. I am getting the following: "Macintosh HD" is locked" Pop-up message on every start up. After going into disk utility I have the following: ...
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Can't add shared drive as Time Machine drive

Solved by this. Can't post as answer due to low reputation on this network site. on the server (in my case the iMac) in the settings --> sharing tab, disable file sharing (no need to reboot or ...
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How do I fix hard disk "Error: -69845: File system verify or repair failed"

How can I resolve the Error: -69845: File system verify or repair failed error I'm getting when trying to verify my hard drive? So far these are the steps I've taken: In Terminal I ran: diskutil ...
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Disable USB Write Caching by default

Is it possible to change OS X's USB filesystem mount behaviour to use the noasync flag to disable write caching? The aim here is to allow USB devices to be safely removed without eject or hdiutil ...
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How can I block access to USB drives?

In an office environment I need to block access to USB drives for security reasons. I know how to do this on Windows, but how can I accomplish this on macOS?
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How to allow an internal disk to sleep on 10.13

I have an internal disk which is noisy and seldom used. With previous versions of OSX I was able to spin it down by using diskutil eject, but with the latest High Sierra 10.13.4, after a few seconds ...
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5 votes
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No space left on device while 50gb is available

I have a problem with my free space. macOS started to run slow, all apps reports that there is no space of device, while I have a lot. From System Information: Available: 53,51 GB (53 506 232 320 ...
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External Hard drives not available after sleep

Not finding this question answered anywhere: Recently upgraded to OS10.12 on my iMac. I have 2 LaCie external hard drives attached via USB. As long as the hard drives are awake (spinning, blue light ...
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Folder with nothing in it is still using up space

I have a folder with absolutely nothing in it. Zero. I made sure there was no hidden files in it, by typing "defaults write com.apple.finder AppleShowAllFiles YES." into my terminal. There is ...
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5 votes
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Time Machine and case-sensitive HFS

Time Machine defaults to formatting a new drive to Journaled HFS+ (case-sensitive), if you set up the drive from within Time Machine itself. However, my main drive (the one Time Machine will be ...
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How to create encrypted HFS+ partitions on Big Sur?

The Disk Utility application in MacOS Big Sur (11.0.1 (20B29)) no longer provide the option to create "MacOS Extended (Journaled, Encrypted)" partitions. Is there any other way to create HFS+...
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Can't mount encrypted HFS volume

I have an external hard drive that is partitioned as a single encrypted HFS+ volume. Here's what's going on: The volume won't mount, Disk Utility won't repair it. diskutil cs list says: However: ...
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When restoring disk in DiskUtility.app, showing error “the volume on device dev disk2(source volume) is not of type Apple_HFS or Apple_UFS”

I got a new MacBook and now I’m trying to make an exact copy(clone) of my old Mac to the new Mac. Tried migration assistant, but I found it not reliable since there are still a lot of settings in my ...
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Is my system disk damaged?

Recently I couldn't get my Mac (bought in April - 2009) to boot. The hard disk was quite full and honestly speaking I kept ignoring a number of warnings from OS X to 'free up some space'. I have been ...
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Can I enable AHCI mode of the SATA controller when booting to Windows on a MacBook with Nvidia chipset?

Is there a way to enable AHCI mode under Windows on a Macbook5,2 (white) on N-Force 730i chipset? If you want to just say 'no', please put it in the comments instead. Thanks. Advanced Host Controller ...
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1 answer
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Looking for OpenSource Cleaning / cache deleting application for Mac

In the times of small SSD harddisks, I was looking for an open source software to delete caches and other space wasters like logs, unused application remains and such on Mac OSX, and all over the web ...
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Customize external HDD spindown timeout?

It's possible to enable spinning down of mechanical hard drives using the "Put hard disks to sleep when possible" option in Energy Saver, and it's possible to customize the timeout period with sudo ...
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3 votes
2 answers
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External Thunderbolt SSDs not showing space after deleting files

I have two external Samsung X5 2TB Thunderbolt 3 SSDs. Both of them work fine after I reformat them. But when I delete files (and empty the recycle bin), the space on them does not increase. In ...
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1 answer
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In a copy operation why does macOS Big Sur send a lot of packets to the hard drive it is copying from?

Copying a large file from an external hard drive to a Mac, shows a lot of packets first going to the hard drive. Then there is a period of no disk activity. Then what I expected happens, packets ...
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3 votes
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Disk mount error: 49244; repair exits with code 8

I have a fairly new LaCie d2 4TB hard drive (roughly one year old). Some days ago it wouldn't show up anymore and now I looked into the issue. In disk utility the disk is unmounted. When hitting "...
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Should I create APFS volumes or a partition on an external disk?

I have just newly bought an external drive (not SSD), and was planning to create several partitions on it, for example to keep my files separate from Time Machine backups. However, when browsing ...
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How to move my files to iCloud drive without using my local disk space?

I have a Mac running Mojave and got into a situation where I don't know how to solve: My 512Gb SSD disk is divided into 2 partitions (200Gb and 300Gb each): The first partition is where the OS ...
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Best practice for mounting drive on logon

I have a MBP 2015, and use the SD card slot for a second drive; it's a slow micro SD card, but I only use it for backups, which suits my purpose. I've noticed that since upgrading to OS 10.13, the ...
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Can't erase hard drive or install new OS onto 2007 iMac

I've tried most things i've read online to try to fix this issues to no avail but I'll explain exactly what's happening. I think I accidentally deleted the EFI partition from my Mac which is the ...
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3 votes
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101 views

Accidentally overwrote encrypted external drive (Mac OS)

So I was rushed (and being careless) and accidentally copied about 80 MB of a Raspberry PI image (SD card formatted extfs) over my external USB drive (4TB) that was formatted and encrypted (using Disk ...
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3 votes
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204 views

HFS external drive aways mount read-only

I am having a problem with an external HFS+ USB drive on a MacBook Pro running High Sierra: When I plug the drive into the computer, it gets automatically mounted as read-only. I have to manually ...
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Free Space Differs Between DiskUtility, Finder, TimeMachine, and Storage Tab

The actual question: Time machine calculates the size of my backup as 925GB, while diskUtility shows only 858GB is used, while OmniDiskSweeper and GrandPerspective apps show that I am only using ~...
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3 votes
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How often does the Recovery Volume mount itself?

From my understanding about the new APFS System for macOS High Sierra, the Recovery partition disk1s3 will shortly mount and unmount itself to check for updates in the background. Ive noticed from ...
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930 views

APFS - Other volumes in container problem

I ran into issues with my Macbook Pro running High Sierra 10.13.4. The problem is that Other volumes in container metric are showing over 176 GB of space taken and I am not able to reclaim it back. I ...
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Unable to mount NTFS external HD

I have a 1TB Samsung M3 that I mostly use to read files, and not writing. I've always used it as read-only (the standard way OS X will mount NTFS disks) and never had any problem. However today I had ...
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macOS El Captain missing disk space on Fusion drive on iMac, missing contents for GPT partition

I was formatting my Fusion drive of 3 TB and unfortunately it seems 1 TB is missing. I tried to search the answer on this forum and found some relevant answers here but my situation is bit different ...
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3 votes
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As High Sierra does now support 512 byte block sizes, are Samsung 960 NVMe SSD fit in a Macbook pro retina 15 mid-2015 with a Sintech adapter?

I know that there is already some topics on this forum about that but I didn't find a clear answer or if someone have tested it since then. Do MacBooks support NVMe SSD drives via the use of a ...
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3 votes
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Directory is not recognised on macOS but works well on Ubuntu and Windows

I have a removable hard drive in NTFS format that is connected to macbook pro through usb. For some reason finder doesn't show one of the directories. First I thought that I removed it by mistake, ...
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3 votes
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External Hard Drive Corrupted, Invalid Record Count

I have an external hard drive that I unplugged without safely ejecting and now it won't mount. I can see it if I write diskutil list, but when I try to mount it fails. It is a WD My Passport Ultra. ...
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3 votes
0 answers
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Connecting FAT32 USB Flash Drive on Sierra

I currently own a 32 GB SanDisk flash drive with a FAT32 file system. It's been reliable for years, and on my MacBook Air 2013, I've never had any issues with it. However, I am unable to connect it to ...
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3 votes
0 answers
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Recovering Corrupted Partition Table on Time Machine HD

I had a loss of power while I was restoring some data from a Time Machine backup. When I brought the computer back up, my 4TB drive was unusable, with OS X prompting me with a dialog that stated 'The ...
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3 votes
0 answers
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How do I prevent OS X from immediately trying to mount unlocked drive / prompt for password?

Due to a hard disconnect of my encrypted external hard drive, it seems my HFS+ partition has become corrupted. Every time I unlock my hard drive, OS X tries to mount it silently in the background and ...
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3 votes
0 answers
140 views

Drive disappears from `diskutil list` about 35 seconds after showing up

When I plug in my 1TB 2.5" SATA drive to my MacBook Air Mid-2013 Mac OS Sierra 10.12.5 machine, the drive never shows up in Disk Utility. However, the disk does show up in diskutil list, along with ...
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External USB3 hard disk not mounting (10.11.6)

I have an external USB3 hard disk which used be my Time Machine backup drive. It is not mounting in Finder, but is showing up if I diskutil list. It sounds like it wants to mount - in fact, it sounds ...
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3 votes
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macOS Sierra won't install and complains on the disk

After downloading and running the installer, I met with the problem when the installer is asking "Select the disk where you want to install macOS". My default OS X disk which runs El Capitan normally ...
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3 votes
0 answers
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mds_stores prevents me from ejecting Time Machine disk

I know many people have complained about being unable to eject a Time Machine disk. The usual response I have found online is to download and use "What's Keeping Me?" to find out what process is ...
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How can I repair hdd using Disk Utility if First Aid options (Repair, Verify) are all greyed out?

Would really appreciate any help in fixing an external drive so can use with my Mac again. I had a power loss & when computer rebooted it was unable to see the attached Freecom 320Gig Hdd (FAT32 ...
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3 votes
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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 restart ...
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3 votes
0 answers
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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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3 votes
0 answers
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Unable to install OS X Lion on Macbook Pro's new internal HDD

The model I'm working with is a Macbook Pro A1278, Early 2011 design. This belongs to a friend, whose current drive, a 500GB SATA III which came with the laptop, was shown to be in poor health, having ...
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3 votes
0 answers
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Loading Any USB Flash Drive onto an iOS Device

I have a SanDisk Ultra USB 3.0 flash drive with 32 GB storage on it, and would like to view its contents on my iPhone. I have seen flash drives that are made particularly for iOS devices and have ...
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3 votes
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Are repeated FileVault-related harddrive problems a signal that I have greater hard drive problems?

I found a great answer in the forums for an incorrect block count/invalid free block count problem that Disk Utility diagnosed when logged in but couldn't see in Recovery HD mode. Turning off ...
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3 votes
0 answers
336 views

Missing hard disk space

I'm trying to figure out where my missing hard disk space is going. I'm using du and df from the command line and there seems to be a clear discrepancy. So here's the du output: $ sudo du -h -d 1 / ...
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3 votes
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Mac Mini 2013 wakes immediately after sleep when USB drive plugged in

I have a 2013 mac mini running osx 10.9.3. I used to be able to send the machine to sleep by going to the apple in the menubar and choosing sleep. After a recent update, when I do this the displays ...
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3 votes
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Raid two external hard-drives with read/write support on Windows & OS X

I have a USB 3 HDD enclosure that currently has two 1TB drives in it. I am looking at buying another external USB 3 HDD drive (not an enclosure). I am currently running the external enclosure with the ...
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