Questions tagged [disk-utility]

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

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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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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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39 views

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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32 views

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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38 views

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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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
296 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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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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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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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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SD Card not mounting, not listed in Disk Utility, finder and /dev/diskxx

I have really strange problem. My SD Card is corrupted somehow and I would like to format it. But from some reasons I don't see it in Disk Utility. I don't see it in Finder and even it is not mounted ...
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1answer
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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
491 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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RAID 1 on macOS : Disk Utility do not show me the same information in GUI and CLI mode

I just created a new raid volume on macOS.In CLI everything seems to work. This is what the diskutil raid list command gives me : 1 However, when I go in GUI mode in Disk Utility, I see only one ...
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94 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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184 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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Can not erase usb drive on mac [duplicate]

Hi I have a macbook and I want to erase my USB drive but I can not do that I used disk utility but it gives me this error Erasing “TRANSCEND” (disk2s1) and creating “TRANSCEND” Unmounting disk ...
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54 views

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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2k 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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93 views

External HDD cannot be mounted, partition removed or show up (NTFS & APFS)

I have drive with NTFS & APFS partitions and stopped working hours ago. /dev/disk0 (internal): #: TYPE NAME SIZE IDENTIFIER 0: ...
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1answer
584 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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324 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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443 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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973 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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689 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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736 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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55 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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966 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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1answer
2k 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
2k 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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322 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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188 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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549 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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56 views

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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56 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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1answer
2k views

Fix MacOS Mount Point

I accidentally ended up renaming my non-OS partition originally named Sanu and mounted on /Volumes/Sanu. I then tried to rename it using get info but it didn't work. So I fired up terminal, did cd /...
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439 views

Cannot mount possibly corrupted hard drive?

I have a 1TB external hard drive that I'm trying to get working again so I don't have to buy another. It was previously encrypted and partitioned. I attempted to remove the partitions (to 1 partition)...
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1answer
13k views

What is the equivalent of windirstat for Android for identifying space hogs [closed]

I have a Google Nexus 6 running Android 7.1.1. How can I find what is occupying the device's disk space ? It has a 32 GB disk but most of the time, I see only 300-400 MB free space, getting constant ...
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44 views

How to Repair Mac Boot Drive when not able to boot into Machine?

Disk Utility Failed with errors. Wanted to use commercial tools say Disk Warrior to repair the drive. How to use these tools when MAC not is not booting up?
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2k views

How to remove partition and extend macOS partition size in macOS High Sierra?

On my Mac, I had a BootCamp partition set up that I deleted using Disk Utility. Here's what the current setup looks like: And here it is in the Partition dialog: Dragging the control on the pi chart ...
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44 views

hard disk locked and no password to unlock it, how and what do I do about it

Hard disk in the laptop it came with when I switch on the system it shows me a space for password and I don't have any idea of what the password could be and when I put it (hard disk) in an external ...

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