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Questions tagged [disk-utility]

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

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macOS: How do I find which file on an APFS disk is associated with a specific `doc-id` and/or `file-id`?

I am on macOS 14.5 with APFS formatted SSD. Disk Utility always reports the same error: error: doc-id tree: record exists for doc-id 1341220, file-id 8567077 but no inode references this doc-id. I ...
HirsuteJim's user avatar
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Missing partition on disk utility for Mac. How to find it and revert it back to Mac?

A while back, I partitioned my Mac SSD, but never got around to installing an OS. Now when I go to disk utility, I cannot find the partition. Has anyone faced this before and what can I do? There is ...
Isaac Reeve's user avatar
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151 views

free space not appearing in disk utility + multiple free spaces showing up in diskutil

I recently tried to install asahi linux on my mac, but I installed the wrong version, so I used disk utility and wiped the partition, I then did a series of actions which i do not remember the ...
hellohelloju's user avatar
4 votes
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489 views

Average/General RAID 0 "Chunk Size"?

EDIT: this got closed as being "opinion based". i disagree! the facts are, i have to choose one of five Chunk Size options when creating a RAID on Mac. i don't know which size to choose for ...
SyberKnight's user avatar
1 vote
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378 views

How to make APFS snapshot tidemark smaller?

I want to install Windows on another partition, so I want to shrink it, but Disk Utility says that I can't resize, because of the snapshot tidemark, but I have more than 100GB free space, and the ...
Octopus's user avatar
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How to make recognise an improperly ejected disk?

Earlier, the external backup disk was not mounting on my Macbook automatically after plugging in to USB-C port via an adaptor for USB. It wasn't in the disk list in Finder. I succeeded to mount from ...
Vega's user avatar
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Unable to Launch Partition

I have deleted Linux partition from my drive and now I cannot see it, only empty drive. After typing diskutil list: /dev/disk0 (internal, physical): #: TYPE NAME ...
Noz_Char's user avatar
1 vote
2 answers
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How does modern disk image software make accurate images of drives in use?

In the old days, if I wanted to image a drive in Windows, in it needed to be unmounted. Which for the system drive usually meant using a boot disk or rebooting into a "stub" that loaded ...
Chuu's user avatar
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diskgenuis shows two partitions sized 450MB on a 500GB disk that is unreadable

I have a 500GB external disk that suddenly stopped working with error "the disk structure is corrupted and unreadable". chkdsk can't continue. IN disk genuis, i see the following: I am ...
ruth hadish's user avatar
1 vote
2 answers
295 views

Is it possible to check for bad sectors (read error) for a disk with unknown partitions?

Windows shows that the partition style is GPT, but of course, it does not recognise the partitions because it has Linux partitions. In this case, can I check the disk for physical read errors? I mean ...
Damn Vegetables's user avatar
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Why I have multiple PFS Volume Macintosh HD - Data and how to deal with it

I own MacBook Pro (15-inch, 2018) with macOS Catalina version 10.15.7 (19H15). The device underwent two liquid split repair services, after each I setup it from what looked to me as factory settings ...
Marta Karas's user avatar
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Does Linux; Does Windows 10? XP? DOS? auto write-to/modify a second drive when connected/mounted?

Have HDDs in vintage computers, and in PVRs etc. And use/have Mac/Linux/Windows machines. On occasion would like to use various drive utilities or SMART reporting tools only available to me on one OS, ...
revans19's user avatar
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How to convert HFS+ partition to APFS on Mac?

After struggling with deleting Ubuntu from my Mac alongside with macOS, after deleting EFI volume it became free and unused. How can I convert it to APFS again and include that in my HD storage? Disk ...
Rachael O'James's user avatar
2 votes
1 answer
778 views

USB flash drive not formatting

I'm currently trying to format a usb drive to be used as a Win10 home boot drive. It has previously been a Fedora workstation and Fedora Server boot drive. I used the DISKPART utility in the windows ...
Chris Paris's user avatar
1 vote
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3k views

Brand new SDcard not formatting (Mac)

Been pulling my hair out on this one. Have a brand new Sandisk 32GB Extreme Plus SDCard. I've been trying to get an image on it to work (for my Raspberry Pi 4). When I bought it, I used balenaEtcher ...
K2xL's user avatar
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Unable to use free space shown by diskutil in macOS

I have a 2TB external drive (disk2) that used to have a volume (disk2s4) and two APFS containers (disk2s3 and disk2s2). I removed one of those volumes (500GB disk2s2) thinking I could then resize the ...
Semyon's user avatar
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How to restore from a sealed APFS volume when restore fails "because it has a broken seal"

I have been researching this for many hours over the last week. A description of my research effort is at the end of this post. Disk Utility will not restore an APFS volume "because it has a ...
timeSmith's user avatar
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How to know which drives are chkdsk on startup

I have a PC with 2 internal disks A (2 partitions, bitlocked) and B (1 partition), running Windows 10 v2004 (20H1). When booting with B, a checkdisk is runned at startup. I cancel it before the 8 ...
Oliver's user avatar
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1 answer
1k views

How to find all virtio disks on machine?

So, lsscsi can list scsi devices, and nvme list can list nvme devices. What is the equivalent for virtio deivces?
feeling_lonely's user avatar
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6 answers
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WDDriveService.exe: eating cpu process & excess Internet usage

WDDriveService.exe is working hard, eating CPU cycles and accessing the Internet for no apparent reason. I’m seeing this on Process Explorer (Sysinternals). (2 pics attached) I’ve read that “...
AngelSix's user avatar
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2 votes
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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 ...
Arthur Wang's user avatar
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566 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 "...
Andrés Morales's user avatar
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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 ...
idrisjafer's user avatar
1 vote
1 answer
392 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 ...
the programmer's user avatar
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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 ...
Pera's user avatar
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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 ...
Pera's user avatar
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217 views

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,...
Dan's user avatar
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1 answer
5k 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 ...
pjotr_dolphin's user avatar
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1 answer
384 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 ...
chribonn's user avatar
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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 ...
Macbookpro2012's user avatar
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2 answers
1k 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 ...
Nebula's user avatar
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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/...
Pedro77's user avatar
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1 vote
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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 ...
Vijay Kumar's user avatar
4 votes
2 answers
27k 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 ...
Ben Franklin's user avatar
1 vote
1 answer
656 views

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 ...
MartyE's user avatar
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4 votes
3 answers
13k views

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 ...
Ashutosh Dave's user avatar
0 votes
1 answer
3k 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....
sotnos's user avatar
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148 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. ...
kjgregory's user avatar
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1 vote
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537 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....
Lincoln's user avatar
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1 vote
0 answers
162 views

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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1 vote
1 answer
122 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 ...
robertsirwin's user avatar
5 votes
2 answers
9k 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 ...
HXSP1947's user avatar
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0 votes
1 answer
504 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 ...
Alexes's user avatar
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0 answers
2k 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 ...
Akhilesh Sharma's user avatar
2 votes
1 answer
12k 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 ...
PascalCzasny's user avatar
0 votes
1 answer
215 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 ...
Duncan Felix's user avatar
0 votes
1 answer
2k 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 ...
Rogare's user avatar
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0 votes
1 answer
756 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 ...
Ahsan Hussain's user avatar
3 votes
1 answer
3k 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
Lucas Catani's user avatar
1 vote
0 answers
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....
Vishnu S manoj's user avatar

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