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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Macbook 'Missing Space' Issue after Removing Partition

I had previously set up my 2012 Macbook Pro in a fusion drive configuration (250GB ssd and 500GB HD) for macOS and had a 250ish GB partition for Windows on my 500 GB hard drive. I tried removing the ...
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Unable to mount my WD Easy Store 4TB [duplicate]

I am unable to mount my WD Easy Store 4TB on my Mac. I am using macOS Mojave - 10.14.5. I tried several commands using terminal to unmount, but all in vain. It shows ejected but still shows in ...
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Parition disapeared after deleting Linux

I had a 70gig partition running Ubuntu that I deleted from Disk utility (was gonna reinstall with Kubuntu instead). However, once the operation was complete, I was just left with the Mac partition (~...
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Mac Mojave : Permission denied error on creating Image using Disk Utility

I am getting permission denied error on creating image of Mac 10.14. The order of steps are: Use Mac 10.14 Go to disk utility File --> Image from Folder --> Select the Macintosh HD(ie Selcting the ...
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1answer
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Deleted a partition with High Sierra, now unable to reclaim space in partition with Mojave

I had 2 partitions in my MacBook: Partition 1 - 200 GB - High Sierra Partition 2 - 300 GB - Mojave After deleting the partition 1 I am unable to reclaim disk space associated with it. Here is the ...
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MBP TB 2016 Failed to format and crashes. APFS Container damaged?

Hy everyone! I need help restoring my MBP. 2016 MBP15TB I made a USB stick with Mojave, restarted with Command+R, went into disk util, and wanted to erase my SSD to start the install. The computer ...
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Why there is not enough disk space on my Elements drive? [closed]

I bought an Elements Western Digital 4TB, and it can't fit all the data I am trying to copying from a 1TB My Passport Western Digital. Is it perhaps related to cluster size, and if so, how can I ...
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Why is my external hard-drive is not appearing (most of the time)

I recently bought an external hard-drive, Western Digital 4GB, and I have a MacBook-pro 2015 (15inch). When I received the hard-drive, it worked like a dream, I just re-formatted it to apple's file ...
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Macbook pro 2015 PCIE NVME HP EX920 M.2 Mojave Disk utility doesn't see drive

As the title says, if more specs are needed. As for right now no matter what I do, I can't get computer to read the nvme disk. What have I tried? 1: Moving around the drive in the socket 2: Trying ...
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68 views

my mac loss about 80GB free space after running diskutil commands

Since I have allocated 2 partition for installing windows. Now i want to get space back to the macintoh HD Disk, I just followed by the method online and tried several commands like: jhdeMacBook-Pro:~...
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Unable to format, add or delete songs: iPod Video 5.5g

After a few months of not using my iPod (moded with a 128GB SD card) I charged the battery and it plays normally, but now I'm neither able to add nor delete them. First of all I tried to restore with ...
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macOS Catalina: MacBook Air Corrupted HD Partition Map

My MacBook Air is not working after installing macOS Catalina. I tried everything to erase the hard drive using Disk Utility and diskutil command, but it won't just let me. I tried booting into ...
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Why Apple partitions the SSD drive this way, and which partition should I removed?

I am planning to reformat both of my drives in my 27 Inch iMac (mid 2011), and I have a question about the way the SSD is partitioned by Apple. Why are there are three tiers in my SSD? I don't want ...
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Cannot install macOS Mojave on external spinning drive. Error: This Mac can only install macOS on APFS-formatted drives

I am using the Install macOS Mojave.app installer on my Mac mini (2018) running Mojave 10.14.5 to install Mojave on a formatted external spinning disk laptop drive (a Toshiba model with case). I ...
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2answers
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Cannot resize APFS partition - “The new size must be different than the existing size”

I have a 1TB SSD on macOS High Sierra 10.13.6 with the following APFS partitions: $ diskutil list /dev/disk0 (internal): #: TYPE NAME SIZE ...
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Create a new partition with disk utility

I'm running OS X 10.11.6 and I want to create a new partition on my disk (disk0). Is there a way to first resize the disk to make some space and then add a new partition? When I boot from this disk ...
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Resized with iPartition but MacOS still reports old partition size

I resized an external drive partition from 800 to 900 GB with iPartition but MacOS still reports old size. Did unmount drives, did restart, but still. MacOS 10.12.6 iPartition 3.6.2 (216) Update: ...
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How to merge “Container disk1” back into my MacintoshHD?

Through some failures trying to remove Bootcamp I've found myself with a 289GB Macintosh HD and a 201GB "Container disk1". I initially tried to erase the extra volume, thinking it would then give me ...
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Macbook Air 2015 High Sierra cannot merge free space partitions

I think I messed everything up when I erased the content of a partition from bootcamp. Please give simple instructions. I have no knowledge about how storages work. Thank you.
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1answer
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run first aid from recovery mode

I have Macbook Air 2017 running Mojave 10.14.4, so I check every month to find out there is a virus or malware on my Mac, usually I only use CleanMyMacX and Malwarebytes so one day before I check my ...
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APFS on external drive missing from Disk Utility

When I use Disk Utility app in macOS Mojave to format an external drive, I do not see the new Apple File System (APFS) offered as a choice of format. Does it matter that my external drive is a ...
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Why do I have 2 drives with the same used space?

this is a weird one. I just bought a 2nd hand macbook retina and turns out that when I re-installed macOS, the storage dialog showed up a 2nd drive. The very first thought was that the main drive is a ...
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What is this 11.59 GB partition on my iMac? [duplicate]

What is this 11.59 GB partition ? Is that supposed to be there ? If not, what can it be and how can I remove it ? I don't remember seeing it before I used Bootcamp and installed Windows. I installed ...
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1answer
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“Lost” 300 GB of disk while trying to install Windows via Bootcamp

Had Windows installed with Bootcamp and for a couple of years it went fine, until I recently fired it up again and when it tried to update it went into a crash -> reset (only option that made it boot, ...
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Formatting disk to Mac OS Extended Jorunaled, Encrypted taking very long. Is it normal?

so long story short, my newly purchased external SSD got corrupted a day after formatting it and wouldn't erase. I read somewhere on this site that if I tried to format it to Mac OS Extended (...
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Claiming free space partition: “it does not appear to be a valid Core Storage Logical Volume UUID or disk”

Some time ago, I divided my macBook into three partitions: macOS Sierra, Linux and a shared data partition. Now, I wanted to get rid of the third, merging it to the macOS one. Since I couldn't resize ...
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1answer
24 views

Mac thinks USB is the wrong format

I have a USB drive that I cleaned and formatted as FAT32 on my Linux machine because Diskutil disableOwnership wouldn't work. I plugged it into the Windows machine with the files I need and copied ...
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1answer
31 views

Lost space after removing bootcamp partition via bootcamp assistant [duplicate]

please help i lost 150gb space after deleting the partition via boot camp assistant and the disk utility won't recover it or partition it as one disk i tried to recover by timemachine but the disk ...
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1answer
93 views

Bootcamp Error: The startup disk cannot be partitioned or restored to a single partition (not a duplicate)

I am running Mojave, trying to install the latest version of Windows 10. I had this error, so followed the instructions here: Bootcamp issue: The startup disk cannot be partitioned or restored to ...
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1answer
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External disk does not show in “diskutil list” after premature eject, what can I do?

This question is related to External drive does not mount after plug off without eject, but the difference is that in my case, the drive did not appear in the Disk Utility application nor in diskutil ...
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Boot Camp cannot install Windows because “The startup disk cannot be partitioned or restored to a single partition.” [duplicate]

I have installed macOS Mojave 10.14.5 on a MacBook Pro early 2011. Now I want to install Windows 10 but I am unable to do it. Boot Camp shows the error The startup disk cannot be partitoned or ...
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Can I speed up Disk Utility First Aid by running “fsck_hfs” with the “-c” option?

I ran Disk Utility’s First Aid on a portable hard disk I use for Time Machine, which took around 13 hours (with no repairs being needed). I was wondering whether there’s a way to speed that up. Disk ...
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Disk has multiple partitions but Disk Utility can only mount first one [duplicate]

View from Disk Utility: Output of diskutil (for this disk only): /dev/disk6 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: ...
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MacOS Boot Error

I hope I am able to explain the problem accurately and with sufficient detail. The problem started with the flashing folder at boot up. I used the Command + r option to get into recovery mode. ...
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Trying to install OS X El Capitan, error of external hardrive needing GUID Partition Table Scheme

I have an old MacBook Air with Software Mac OS X Lion 10.7.5 (11G63). I am trying to install the OS X El Capitan but having issues. First there was not enough memory on the mac (even though I have ...
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30 views

Too many partitions on iMac

I don't know what I did or how to delete all the partitions to restore one disk. I don't want to see on diskutil all these disks. What do I need to write in the terminal to delete everything? iMac ...
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25 views

Merging separate APFS volumes into startup disk

A 50 GB APFS volume was designated as the startup disk on my Mac running on macOS Mojave and there is 450 GB of unused space in another disk2. diskutil list output: I need to merge that 450GB of ...
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Computer Froze, Now Raid over iSCSI (APFS Format) is no longer mountable. GPT/MBR not present

I was exporting video in Premiere and the computer froze so I had to restart. Upon restarting, I noticed the raid drive I connect to over iSCSI was not showing up on my desktop. However, it appeared ...
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1answer
15 views

I have two bootcamp partitions but not my original 500GB

I have a mid 2014 MacBook Pro running Mojave. I recently tried to dual boot windows on my MacBook but in the process corrupted my original Macintosh HD and am left with a 85GB bootcamp partition. I ...
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206 views

Bootcamp - Stuck on “Partitioning Disk…”

When attempting to add a Windows 10 (April 2018, build 1803) partition to my 2019 iMac, I get stuck on "Partitioning disk..." perpetually. When I look at Disk Utility, the OSXRESERVED and BOOTCAMP ...
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AMD-Action:downloadProduct:SP error on clean install [duplicate]

I'm getting the AMD-Action:downloadProduct:SP error when trying to reinstall macOS, it doesn't even get to the option to sign in with an apple ID. I've tried the solutions below but it's still not ...
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I am unable to mount or repair 1TB seagate external hard drive on mac

I tried using disk utility both in the regular mode and recovery mode. I tried using the terminal and this is what I get: MBP2011:Volumes admin$ diskutil repairDisk /dev/disk2 Repairing the ...
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How do I remove a disk image that I created myself?

I went to disk utility and created a new image with 1.5 GB of my hard disk. Now I want to remove it and have all the space back for my Macintosh HD. Nothing seems to work. If I eject it, it's not ...
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28 views

Should the internal disk of a Mac be erased?

I saw this post which said that the internal disk of a Mac should not be erased, but it doesn't explain why. Does anyone know?
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Apple MacBook air is stuck on log in loading screen

I am running mojave os, When I enter password to log in, the loading bar start to fill up but it never get log in. Even if it completes 100%, it stucks there. I tried with safe mode same issue ...
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Yet again an FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF partition issue

Update June 10th Partition seams to be back, almost, please check update 4 at the bottom This is happening on a Macbook Pro June 2012 version. Disk is a 1T SSD and it was up to date with Mojave till ...
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The startup disk cannot be partitioned or restored to a single partition. Windows 10 and Sierra

Getting is error trying to remove my Win 10 Partition. "disktutil list" shows the following. Any ideas? /dev/disk0 (internal, physical): #: TYPE NAME ...
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Hard Drive Corrupted [duplicate]

I Erased my hard drive from mac utilities from the recovery mode, but now i am not able to install Mac OS Mojave as it doesn't shows my mac hard drive to install and when i checked it in utilities, it ...
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1answer
50 views

Hard drive ignores available free space

I have a 500 GB SSD. At one point, it had 2 partitions--one for my regular macOS boot (430 GB), and one for developer previews (~70 GB). At some point, I deleted the developer preview partition, but ...
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1answer
29 views

How can I mount an encrypted disk image so that it is read-write?

I have created an encrypted disk image containing a folder whose contents that I want to keep secure, using the disk utility app. I am able to mount this either by clicking on the image or by using ...