Questions tagged [disk-utility]

Apple's built-in disk management utility for the mac. Erases, formats, and restores volumes and drives.

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Error: -69519 when resizing partition of apfs container scheme

I am trying to resize the partition disk0s2 in my Mac. My diskutil list shows: /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: ...
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Missing Macintosh drive after running recovery mode

I’m hoping someone can help me. I’ve had to run a recovery mode on my Mac air and when I tried to reinstall the OSX it cannot find the Macintosh HD. I’ve tried to repair the disk0s2 with no success. ...
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Delete files from SD

I was using an SD card with GoPro. On device format didn't work one day, so I tried erasing it in Disk Utils on my Mac (Big Sur 11.2.2). It appears to be blank, but when I re-mount it again - all ...
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How do I reset the snapshots of an APFS external drive?

In the past couple weeks, my time machine is complaining that it's not managed to complete a backup. It turns out it aren't able to create a snapshot in one of my external drives. Error message is ...
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Catalina partition turns into type FFFFFFF/unbootable and unmountable “disk0s2” after Mavericks install

I'm having a similar issue with this (MacOS partition formatted FFFFFFF etc after bootcamp install), but I got confused while reading the comments. I thought it would be a great idea to dualboot ...
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Disk Utility changing partition types on its own

Whenever I do an operation in Disk Utility the last day it seems that I end up with my APFS partitions set to an unknown partition type (FFFF...) This has happened three times now both after extending ...
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37 views

burning a multi-session cd into iso

I have a multi-session (osx/windows) cd that I'd like to create an iso from. Is there a way to create a single iso file with all the sessions included in it? Output from diskutil list disk2 is below. ...
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bootcamp partition issues

I'm using a MacBookPro11,3 with MacOS Big Sur 11.2.1 I get an error message while trying to partition with bootcamp. It suggested me to run first aid but no problems were found. ”Your disk could not ...
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Can Big Sur disable external drives?

Been having several seemingly unrelated problems with a new (2019) MacBook Pro (MBP).  All of them seem more like software than hardware (as a retired software engineer with ten years as an ...
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Problems Reformatting SSD on mid 2015 Retina 15" MBP

When I purchased the subject laptop last year I replaced the original Apple SSD with a non-Apple 2 TB SSD. For years I have always kept OS and data on separate drives or at least separate partitions. ...
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Seagate External Drive Won't Mount

I am very much a newbie here, but saw something on StackExchange that someone here might be able to help me with. I have a Seagate 2TB portable that I use as a backup drive for my 2017 Macbook. It was ...
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Restore a NTFS volume back up by Disk Utility

I have a Windows installation which I created with Bootcamp. Then I need to expand the volume to add more Software. So I use Disk Utility to create a DMG image for the Bootcamp volume. But after I ...
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How to open an external hard drive when its detected by Disk Utility but not in Finder?

I have a microSD card that is working on my dashcam. But not mac. (latest Big Sur) It's seeable in the Disk Utility but not in Finder. What should I do? Update: aab-MacBook-Pro-2:~ myname$ diskutil ...
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How to check or repair file system on network volume?

I've an application (Arq7 from arqbackup.com) reporting some file system errors… 19-Feb-2021 22:04:43 EST Error: /Volumes/Europa/Photography/µ being deleted/2011 _General.photoslibrary/resources/...
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Help! Missing Components on a Basic MacOS Lion Reinstallation! Missing StartUp Disk!

I am trying to salvage an old, discarded white macbook 2010 running OS Lion. I went through the usual steps to restart in recovery mode, open disk utility, erase the old files, etc., then quit disk ...
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How to remove a Volume using Terminal?

A few weeks ago I mounted an external hard drive with a volume named "CJ 1TB" I ejected it and thought everything was fine, but my system (11.2.1) has not forgotten about it. When I run &...
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Renamed external drive still appearing in terminal with both old and new names

I have an external drive connected to my MacBook Air via USB 3.1 Gen 2 through a TB3 hub. A few weeks ago I changed name of the drive from Mercury 1TB to just Mercury. This was done in the Finder. I ...
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Two different Containers after factory reset? Macintosh HD & Macintosh HD Data?

I wanted to start from scratch so I followed the guide that Apple has on their site. After rebooting and logging back in I saw that I have two different containers. Macintosh HD and Macintosh HD Data. ...
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GUID_partition_scheme not fully used after SSD clone

I cloned a 750Gb HDD to a 1Tb SSD. I can only access 750Gb on the SSD so 250Gb are wasted. How can I include (assimlate?) the remaining 250Gb so they're not wasted, or create an accessible partition (...
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Reinstalling Mac OSX Lion on Locked Disk

I have a 2011 vintage MacBook Pro which is not booting at all. It gets to the gray screen with Apple logo and does not move ahead from there. I pressed Command-R at bootup to enter the disk utility ...
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1answer
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Kali Linux bootable USB not showing up in boot menu

I am using a 2018 MBA running Big Sur I wanted to create a persistent bootable USB with Kali Linux and have followed the exact instructions as given in this article: https://medium.com/macoclock/...
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Safe to delete old “Macintosh HD - Data” partition?

I did a clean install of MacOs today, and when choosing where to install it chose "Macintosh HD". It now seems there is a new "Macintosh HD - Data" partition, where MacOS currently ...
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NTFS-3G auto-mount arguments and disk utility

I setup NTFS-3G on MacOS Big Sur 11.2 and replaced the default ntfs_mount with NTFS-3G. However, I noticed a problem. Every time I plug in a NTFS I don't see any files show up in finder (but they do ...
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Data recovery on MBP 15’s SSD corrupted drive?

It seems like I’ve used up all space on my MBP, and when I rebooted it it became corrupted/inoperable (when I go into disk utilities, Macintosh HD is “unmounted”, and when I press “mount”, nothing ...
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Startup failure, tried to reinstall OSX but disk has no free space/unmounted?

My MBP 15 was frozen so I turned it off via the power button. It now fails to boot and loads OS Recovery straight away. When I try reinstalling my OSX (Mojave), everything looks fine until I have to ...
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Repair options of a (really) Broken HFS+ “Invalid extent entry” volume?

I have an un-mountable external 2TB harddisk, formattet HFS+, one "usable" partition, containing a set of my backups. It won't show in Finder, it won't repair in disk utility, it won't ...
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Missing HD partition in disk utility (after failed Ubuntu installation)

My first attempt at installing dual boot Ubuntu on an old MacBook Pro (mid 2010) was rather unsuccessful and I was trying to erase the Ubuntu partition (300 gb) before re installing. This somehow ...
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Flashing folder icon with question mark on startup of MacBook Pro

This is about a MacBook Pro Retina 2014 with Catalina. I tried to do a factory reset of the MacBook. Having backed up everything I needed (not using Time Machine, just copying photos etc. onto an ...
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Recovering data from a micro SD card with missing partion after unsafe eject

I am currently stuck trying to recover data from an unsafely ejected 64GB micro SD card that was inside a smartphone. Windows's diskpart utility would not recognize the device at all, so I am trying ...
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SD card no longer showing in Disk Utility

I have an micro SD card that used to work fine and I stored many files on it. It is a SanDisk Ultra 200GB card, and I use the BaseQi adaptor to put it in my Macbook Pro (running Catalina, 10.15.7). ...
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External drive for Time Machine cannot be mounted, formatted or repaired

I just upgraded my MacBook Air to 11.1. I used to run regular backups on a WD 1TB disk using Time Machine. But for a couple of days, the backup has not completed, issuing a "cannot find disk"...
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External Drive not showing up, light blinking, iMac

External Drive disconnected during backup but now it won't show up again. The light keeps blinking. How do I fix this problem? What I tried and didn't work: New USB cable Connect it to a different ...
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Macbook Air 2017 7.1 Disk is crashed?

I have been trying to reboot my MacBook air 2017 from the disk I've used for a while. Couple of days ago my mac shutted down with a circular error sign. I've been able to boot it back with an external ...
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Does “gpt remove” command delete files along with partition? Trying to recover a Mac OS partition Vol Type FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I have a Macbook Pro with Big Sur on it, and I installed Linux Mint. I then resized the encrypted Mac OS APFS partition in order to grant Linux more space. After that I created another smaller Linux ...
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Deleting files doesn't free storage on SSD

Recently my MacBook Pro (Retina, 13-inch, Early 2015) with 251 GB Flash Storage and Mac OS Catalina 10.15.7 started complaining about not enough space left on the hard disk. So I started deleting ...
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Clone APFS Time Machine volume to 2nd hard drive (Big Sur)

I run Time Machine on an APFS formatted SSD and wondered, if it is possible to make something like a backup of my backup. In practice I would like to copy / clone / get an image of my Time Machine SSD ...
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Bootcamp & Tested Disks

My bootcamp doesn't work, at the windows set up page I get "windows cannot locate the disk and partition specified in the unattended answer..." which I think is due to the weird nested disks ...
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Partition disk after deleting the original partition

I have a MacbookPro 2017 running on macOS Big Sur version 11.2 and I installed Windows using Bootcamp without any errors on the first time but I was unaware of the space that was needed for this so I ...
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An unknown partition type in diskutil on Mac OS : FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF Partition: How to Save data

I am using MacAir - Big Sur 2015 with 256 Gb hard drive. Hard Drive was portioned in 3: 2x 100GB (Main and Sub) as APFS and 1X 50 GB as ExFat to install Ubuntu. Later on, I decided to do partitioning ...
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Is it possible to recover an erased Mac SSD partition?

I did the stupid thing of formating by accident the main SSD in my Macbook. I was using Windows through an external drive and hit the "Erase" button thinking it was another drive. So I lost ...
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Boot Camp error “Windows cannot locate the disk and partition specified in the unattended answer's file” [duplicate]

I have a 2019 MacBook Pro 16 inch running on macOS Big Sur 11.1. I am trying to install windows using Bootcamp. I get the following error: Windows cannot locate the disk and partition specified in the ...
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1answer
206 views

Boot Camp error “Windows cannot locate the disk and partition”

I have a 2019 MacBook Pro 16 inch running on macOS Big Sur 11.1. I am trying to install windows using Bootcamp. I get the following error: Windows cannot locate the disk and partition specified in the ...
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1answer
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Can't reclaim empty space on main macOS partition [macOS Mojave]

A while ago I made a linux partition on my MBP (2017), but it didn't work so well so I needed to delete the partition. After a lot of trouble trying to delete it, I found this answer; I used the ...
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How to format a USB drive and increase its available size?

I have a 32 GB USB flash drive which is currently formatted to 261 MB: How can I reformat/erase that USB drive so that I access all 30.75 GB of it? Disk utility won't let me change the size of the ...
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How do I access files, copy them on an external hard drive, and see them on it?

I'm trying to recover the password of an old iMac, couldn’t boot to Recovery though. So I went into single user mode to access the files, which worked. I have an external hard drive that is formatted ...
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MacBook Pro 2018: macOS reinstall to Mac without existing macOS, admin account & startup disk

I'm trying to reinstall macOS to seriously messed up MacBook Pro 2018. Apparently, problems started initially when Big Sur update failed. Computer's disk has since been erased and all accounts have ...
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My APFS won't boot, please help

This is a follow-up question for Lost my APFS partition after using EaseUS partition manager on Bootcamp I did the same thing - used EaseUS to reformat a windows drive to be larger, and made my APFS ...
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Disk Utility says that my external harddrive is not mounted, zero space used but zero space available

I have a Windows PC and used that to format this external hard-drive to exFAT. I plugged it into my MacBook Air (MacOS Mojave version1 10.14.6) and it won't show up in Finder. When I open Disk Utility,...
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Diskutil & Bootcamp couldn't remove Windows 10 partition

I've installed windows 10 latest build on my mac using Boot Camp Assistant, And I'm trying to remove windows 10 now. I've tried uninstall using Bootcamp Assistant but it could not recognize my ...
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How to uninstall Windows (bootcamp) bootloader after erasing all disks and restore macOS?

I have a Macbook 12 (2017) with Windows 10 in Bootcamp and macOS 11.1. I've erased all disks from recovery, re-formatted the disk as HFS+, but when it starts, it tries to boot Windows and stucks on ...

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