Questions tagged [disk-utility]

Commonly used to refer to Disk Utility.app, an application included with OS X.

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How to setup and use a sparse image to archive my media incrementally?

I have looked up several tutorials on this, some are outdated and some don't explain it enough in detail. I am currently organizing my music library and would like to add a backup copy of each album ...
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Is macOS disk utility first aid reliable? 3.5 hdd enclosure took a small tumble (1.5ft onto carpet), tested twice, gave the all clear [closed]

New HDD enclosure fell onto carpet, while plugged in 😬, hopefully it was idle, that was a few days ago, been working fine since, ran first aid twice without any errors, was purring a bit while doing ...
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NVME SSD drive installed into an external enclosure not showing up in my MacOS (Catalina)

I have a brand new 1TB Sabrent NVMe M2 SSD drive that I want to make my boot disk for running the Mac OS - I have UGreen external enclosure and have added the drive to this and plugged this in via USB ...
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How to recover an ExFat partition from an external portable HDD after partition merge?

I have an external portable HDD with a capacity of 500 GB, which was partitioned into a number of partitions. Half of the capacity was allocated to an ExFat partition named MyPassport, while the other ...
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MacOS: heavy disk written and read by corespotlightd, how to fix?

I just realize that my ssd health is down to 47%. Check the Activity Monitor on Mac shows that corespotlightd causes 10TB data read and write, and kernel_task causes another 2TB. This is just in less ...
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External SSD only visible in System Profiler but not in Disk Utility and Finder

I have a Samsung T3 SSD and have been using it for a few years. After a break of a few weeks, I tried using it again but it just doesn't show up on my Mac. It's also not visible in Disk Utility but i ...
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21 views

“Other” storage on my Mac keep growing

I noticed today that my Mac storage is getting smaller and smaller. I also noticed that the "Other" part of my storage is getting bigger and bigger even though I'm deleting big files. Can ...
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58 views

Recover USB stick geometry

I want to recover an USB stick with linux tools, the damage was caused by an incorrect disconnection of the drive. When the pen drive is connected in linux, there's no mounted fs. I started the "...
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115 views

MacOS Catalina: Extend APFS Volume

Following is the result of diskutil list command: I want to extend disk0s2 to take up available space (29GB) since I have 128GB SSD and I have deleted container disk of size 29GB. I tried with disk ...
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69 views

Flashing folder when booting up mac

When I'm booting up my macbook pro from 2011, and one day it randomly started showing a flashing folder. I didn't do anything special with it before that, and when I go to disk utility, it shows no ...
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Can't format pendrive whatever I do. It is not read only pendrive [duplicate]

This is a working pendrive. I can write on the main partition, delete from it. Everything possible can be done. Just can't format it. Formatting tools on OS other than Mac show format complete but ...
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Can't format pendrive whatever I do [duplicate]

I really need help. Even if you are not sure of the solution, please suggest something. I really need it. I formatted a pendrive in macOS using disk utility (GUID, macOS extended journaled). Then I ...
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Unable to mount usb drive after format (erasing it) in Catalina - disenter error

I'm trying to create installer on an usb in Catalina (run createinstallmedia command). The first step is to erase the disk. After the usb is erases, I get error "Could not mount disinter" error. Also,...
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461 views

MacOS: Modify secure boot T2 settings without Recovery Mode?

I have a Macbook Pro with T2 security chip. I was making a recovery of a Time Machine backup, that somehow failed. Could not boot up after it. Somehow also the Recovery Mode partition is gone. Now I ...
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Do SMART technologies and HDD Surface Scans do the same thing?

There are utilities that check/revive/update the bad block list by systematically reading each block of data on a hard disk and write it while other utilities rely on SMART monitoring. Are they the ...
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Terminal commands for file backup

MacBook Pro late 2012 Having issues with OSX and hard drive Have been told to get the hardware upgraded however in the meantime need to back up files I do plan to take a disk image however as an ...
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Options for a Mac that can't run anything but failing “Install OS” from recovery partition?

Earlier this week my late-2014 iMac started showing odd behavior: the WiFi wouldn't turn on and when I tried to access System Preferences by clicking the Apple logo, I wouldn't get a drop down. My ...
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Disk times out with I/O Errors while using ddrescue

I am trying to use ddrescue on Ubuntu 19.04 to image a failing external hard disk. There is a primary Windows NTFS partition of 220GB and a secondary Recovery NTFS partition of 14GB. ddrescue is able ...
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OCZ agility 4 is not recognized by Toshiba SSD Tool

I have a working OCZ Agility 4 SSD as system drive. It is working. I want to secure erase it and update its firmware (if available). The problem is that Toshiba/OCZ SSD Utility wont detect/...
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Use Others Hard disk space in my system connected in a network

In my office we are having around 60 systems running with windows 10 with specs: Intel I5 processor,1tb hdd etc. in almost all the systems around 500gb diskspace is idle and no one is utilising now i ...
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6k views

Running fsck -fy on my mac throws a container write access error. How do I get around this?

My macbook pro is stuck on the Apple logo on booting and after going through most of the alternatives attempts at fixing it, I've finally come to giving the command fsck -fy a try. I've booted into ...
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Bypassing agreement prompt for DiskUsage.exe?

I am running du.exe on a remote windows machine and do not want to have to access the remote machine's desktop, but the first run of du.exe is requiring an acceptance of the agreement which would ...
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Partition not shown in Disk Utility

My MacBook Pro 2012 has 500 GB of HDD out of which 250 GB were used to install Windows 10. Today, I tried deleting the Windows 10 partition using Boot Camp. In the middle of the deleting process, my ...
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1answer
623 views

Can't erase external hard drive

I have been trying to wipe my external hard drive (WD My Passport 2626 Media 2TB) using my MacOS Catalina 10.15.2. I have tried each command multiple times, shut my mac off between, changed USB port....
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101 views

SD card formatting problems

I'm setting up a Raspberry Pi 4 to run LAKKA (a retro gaming emulation system). I started by copying the image to a 64GB SD card using balenaEtcher, according to some instructions that I found online. ...
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283 views

Cannot remove a really small volume on macOS

For some reason I have a really small volume (3.1 KB) that I can't remove (because I can't format or mount). Is there a way to hard delete this stubborn volume? I'm using Catalina last version (10....
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78 views

How to create a dynamically sized virtual disk that works with both macOS and windows?

I want to make a virtual drive which I want to mount natively on both macos and windows. By natively I mean I don't want to involve virtual machines because they make things slow. So far I have tried ...
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TestDisk has messed up my disk’s partition table and now system won’t boot up

So, my options are very limited, I have a system image but want to use it as very last resort , as I don’t want to lose my files in the partition D of the disk, which is 831Gb. I am running a full ...
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1answer
56 views

May have messed up my Mac Hard drive…afraid to reboot

I know PCs and hardware in general, but Mac is new to me. I'm teaching my son about Rasberry Pis and told him to use my Mac to reformat an SD card and load the RPi OS onto the SD card. Before he ...
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1answer
965 views

Creating a ram disk on MacOS

I am trying to create a ram disk on MacOS using the following command diskutil erasevolume HFS+ RAM_Disk_512MB `hdiutil attach -nomount ram://16384` This seems to work fine on my desktop but when I ...
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1answer
126 views

Adding a new hard drive to RAID1 software RAID fails

I've got a Mac Pro 1.1 running macOS Server 10.6.8 that I want to use as a RAID-Server. I use Disk Utility to run a RAID1 set with two 500GB hard drives. Now adding a third 500GB hard drive to the ...
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455 views

Memory card showing I/O device error in diskpart and write protected in disk management

I have a Sandisk 16GB Class 10 Ultra MicroSD UHS-A1 Card with Adapter (SDSQUAR-016G-GO61A) memory card. I installed raspbian (Raspberry Pi OS) on it. It has been a few months since I used my ...
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Windows 10. accidental change of my hdd disk id

Sooo, the whole situation is strange as hell... So i accidentally changed my hdd disk id using diskpart After changing the id i restarted my computer. Blue screen appeared with 0xc000000e error code. "...
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4k views

Disk Utility shows different storage usage, recovery could not offer a solution

My MacBook needs to be updated and tells me, that it needs 17GB of available disk space. I deleted many files and "About my Mac" shows that there are 50+GB available. But the message that there is ...
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1answer
39 views

Options to recover hard drive not shown in diskitil list

My iMac's internal drive failed so I created a bootable external drive from a macOS installer. I used this to run diskutil list, which only shows the external drive (plus some disk images to do with ...
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1answer
768 views

External disk with encrypted Time Machine partition doesn't eject properly

I'm not sure when this started, maybe when I setup my Time Machine partition to be encrypted or maybe at a particular OS update, but the Time Machine drive no longer ejects properly. I'd love some ...
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1answer
399 views

All disk Utility Options Disabled

Last day my mac suddenly stooped working, i tried google and by pressing Command + R i landed into menu where globe appear and finally i can see reinstall mac os , disk utility and other options. now ...
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595 views

WIndows Server 2016 - Disk and Network columns are greyed on Task Manager

I need to enable columns disk and network on Server 2016 Standard. Screenshot Task Manager
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1k views

I am not able to create a new partition in my MacBook

I use a MacBook Pro 13 early 2015 model running macOS Mojave, I have 2 partitions right now,(Mac partition APFS and Boot Camp NTFS) I need to create one more partition to extend my boot camp partition....
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1k views

.dmg “Corrupt Image” error

I have created a .dmg of my Pictures library via Disk Utility in Recovery Mode as an emergency back up last night, before erasing my Macintosh HD. I did the same this for Documents and iTunes, all in ...
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890 views

EFI partition of the HFS formatted external hard drive won't mount in macOS

General Description of the issue Initial Cause: When I was copying some files to the external drive, the copying operation froze half way. I couldn't eject the drive so I just unplugged it. What ...
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1answer
63 views

Is there a way I can check which block of disk is really used?

I use df and du to check disk usage of centos,then I get different results from these tools. [root@localhost home]# df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/...
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2answers
1k views

How to delete a unaccessible volume on Mac?

Hi do I delete virtual partition on virtualbox? I'm using MacOS Mojave v10.14.3 and once installed virtualbox. I deleted the virtual machine and the app. However, the partition is still there. How ...
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4k views

What is the relationship of await, r_await and w_await in iostat -x command?

I want to know the relationship of the await, r_await and w_await columns in the output from iostat -x. Below is an example output of an iostat I/O statistics. avg-cpu: %user %nice %system %...
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1answer
3k views

MacOS Mojave, ISO images, and “no mountable file systems” error

I have a little Gigabyte BRIX that I'm trying to install Linux on. However, my Mac appears to be barfing on every ISO image I've downloaded. So far, I've tried Mint and Ubuntu (and even FreeBSD out of ...
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369 views

GParted and Disk Utility disagree on the partition layout - but Disk Utility is inconsistent

I'm trying to make a storage partition on my bootable Linux flash drive. It's using GPT and booting with EFI. |------|-----------------| - - - - - - - |----------|------| | EFI | Linux | ...
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379 views

I am stuck in a loop with Disk Utility on a 2009 MacBook Pro and attempts at reinstalling a working macOS

I am stuck in a loop with Disk Utility and attempts at reinstalling a working macOS. I have an older MacBook Pro from mid 2009 that has worked fine, but I am currently unable to reinstall my macOS (...
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1answer
595 views

Chrome starts, works for a third of a minute then crashes

I got a problem with Google Chrome. This is exactly what happens: After clicking on the chrome shortcut (which has no commands set other than running chrome), it opens after 5 seconds, then uses 100% ...
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Creating a base image for macOS High Sierra with Apple File System (APFS)

I used to be able to create a single dmg file of a Mac disk drive (contains all partitions including recovery partition) and then deploy it to another Mac as per these instructions: https://support....
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60 views

Clone El Capitan to partition on external hard drive

I am trying to dual boot OSX El Capitan and CentOS 7. Prior to attempting to install CentOS I'd like to create a clone of El Capitan on a partition of the same G Drive that I use for Time Machine. I ...

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