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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Can I delete this extra Macintosh HD - Data partition?

I had Boot Camp set up on my late 2013 MacBook Pro. I was trying to remove Boot Camp and Windows to free up space, but Boot Camp told me I needed to run First Aid. I ran First Aid but now my ...
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Disable "The disk you attached was not readable by this computer" for disk

When I enter a USB drive that is encrypted with veracrypt, I get an error message: The disk you attached was not readable by this computer Eject - Ignore - Initialize Which I select "Ignore&...
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Mac OS JBOD Array - incorrect total size

I've got a Mac Mini with a bunch of external hard drives configured as a single JBOD array. I recently got a new drive and tried to expand the array by clicking the "+" in the lower portion ...
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How can I listen for when a disk image is ejected on OS X?

I am looking for a way to determine whether or not a volume was recently ejected on OS X. Specifically when a DMG volume is unmounted/ejected but I don't understand enough about the system to know ...
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500 GB disk, 250 GB free space - Can't partition disk to add data

I have an issue on my Macbook. I have had a dual boot with Windows (through Bootcamp) and removed this partition later as I didn’t need Windows anymore, I did this through the Bootcamp tool. Though, ...
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APFS container/partition accidentally deleted with command "deleteContainer"

I accidentally place the command "diskutil apfs deleteContainer disk0" in recovery mode and crash my os. I am wondering is the operation fully wipe out the partition, or I can somehow ...
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Does macOS's newer "Erase All Content and Settings" feature yield different results than reformatting the startup drive?

According to Apple, "macOS Monterey includes Erase All Content and Settings, a way to quickly and securely erase all of your settings, data, and apps, while maintaining the operating system ...
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Cannot mount √ - Data volume in Catalina

My mac mini 2012 suddenly couldn't boot this morning. It looks like the main volume (with everything) is unmounted, for some reason. When I try to mount it in Recovery Mode, I get a com.apple....
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Make APFS external Hard Drive without EFI

Is there any option to do a reset of an external hard drive without losing space on the hard drive? I want to use APFS Format and the only way to do it is with Terminal: Locate hard drive with : ...
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Trying to install a new macOS but it says I need Wi-Fi to continue but I have no option to add Wi-Fi

So I’m trying to reinstall macOS onto my Macbook Air and it’s telling me that I need to add Wi-Fi to continue. The only thing is it doesn’t give me the option to add my Wi-Fi. How can I resolve this ...
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Monterey retake space from free space partition

I have tried the method from this page but I cannot manage to reclaim the free space. Output of diskutil list: diskutil list /dev/disk0 (internal, physical): #: TYPE NAME ...
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Can't resize APFS container of SSD disc to install Windows

I'm trying to resize a AFPS container to install Windows with Bootcamp but it keeps freeze on resizing. It's a 2012 MBP 13'' with Catalina (10.15.7) and with a replaced internal Disc replaced for a ...
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macOS partition is showing as unknown area after installing Ubuntu

I tried to install Ubuntu alongside macOS. At some point, I lost the ability to load macOS from the boot menu. The container appears as unknown in Disk Utility: I really need your help, as there is ...
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San Disk Extreme 1TB SSD (1050Mb/s) taking up 10 times more storage than actual size

Just got a Sand Disk Extreme SSD, intially this 14gb filled the SSD to full, formatted it on windows with default allocation size and exFat format, still did the same. Then formatted it on MacOS and ...
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External Hard drive not showing up in Disk Utility

I recovered a 160Gb hard drive (WD Scorpio Blue) from an Apple TV 1st generation. I thought I could use it for storage. But when I plug it in with an adapter, I don't see the drive show up in Disk ...
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Why will an APFS fail to mount, but HFS+ on same disk mounts successfully?

I got a new Western Digital 4TB MyBook a year ago that I was using as a Time Machine drive for my laptop. Just today, it suddenly failed to mount. I ran Disk Utility/First Aid on the drive which ...
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Merge Unallocated Space with a macOS Extended (Journaled) Partition via Terminal

I have a 2 TB external hard drive and it contains an exFAT partition named "2 TB HDD" of 1.5 TB and a macOS Extended (Journaled) partition named "Time Machine" of 500 GB. I noticed ...
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Used MacBook Pro - Can't wipe drive and install clean version of MacOS

Bought a used MCP mid-2015. I am a novice, so my apologies up front. The seller previously upgraded from a 256 GB SSD to a 1 TB SSD. Seller did the upgrade himself and has been using it for some ...
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Missing 100GB when trying to install Linux

Also does anyone know if it's safe to delete the disk0s5, disk0s1 and disk0s3? Edit: oh yeah and here's the error i got when trying to install it again: and the log: https://www.mediafire.com/file/...
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4 votes
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How can I determine why macOS reports that system data increased by over 50 Gb overnight?

I recently had some trouble with System data growing large, up to 150 Gb, for unclear reasons on macOS Monterey, macOS 12.0 Beta. Yesterday I found out that it was due to time machine snapshots. I ...
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M1 Mac, how do I delete those partitions? [duplicate]

I was trying install linux, but an error occurred and I'm stuck with those partitions. The container disk4 one has a valid [-] button, but if I try to delete it, this happens. The other 2 partitions ...
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Unable to see Macintosh HD, error 69770 on Running First Aid

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 ...
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1 vote
1 answer
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MAC Other Volume Issue

I am new to MAC and having issue with my Mac. I am getting "no disk space left". I hardly have some GB of data on my MAC, rest is occupied by other volumes. I don't know what's occupying the ...
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Create temporary partition or volumes

I'm on macOS Catalina. I have a single 1TB volume. I am trying to test an application which will write data to preconfigured volumes, and it does some logic based on how much free space is available ...
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Selecting correct installation disk

I'm trying to install a piece of software (specifically JMP Pro 16) onto my Macbook Air running OS Monterey. When I get to the "Destination Select" screen of the install process, it gives me ...
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Is it possible to mount an encrypted disk image so that only current user is able to access it?

I use VeraCrypt to mount an encrypted volume. When the volume is mounted, other admin users are not able to access it: admin1 % admin1 % su - admin2 admin2 % ls /Users/admin1/veracrypt_mounted admin2 %...
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Cannot re-allocate free space to main disk

I have a Boot Camp partition that I wanted to make smaller, so I would have more space on my main macOS container. I followed this tutorial, but I'm struggling with the last step. I successfully used ...
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1 answer
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How to use Disk Utility on external harddrive - Photos Library is stuck at updating

I'm having this problem: (Apple Photo's Library from Mojave to Monterey looks stuck on updating). I came across this (Photos: "Updating Library..." is stuck, library seems bricked) and ...
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Can I recover boot camp partition after removing it with gpt remove?

My old MacBook Pro, A1286, (15in, mid-2012) has an SSD that divided my main boot disk into two partitions, one for Mac OSX (running 10.13, High Sierra) and one for Boot camp (running Windows 10). The ...
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3 votes
2 answers
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External Thunderbolt SSDs not showing space after deleting files

I have two external Samsung X5 2TB Thunderbolt 3 SSDs. Both of them work fine after I reformat them. But when I delete files (and empty the recycle bin), the space on them does not increase. In ...
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Unable to Run Boot Camp Assistant Because of Microsoft Reserved Partition in disk0s2

I keep running into this error when running Boot Camp Assistant: Boot Camp Assistant was unable to verify if the Windows partition contains a Windows installation. This may be because BitLocker is ...
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Another bootcamp partition restoration issue

I just removed Bootcamp from my 1TB Fusion drive, using Bootcamp Assistant. The process failed due to a disk error. After running First Aid as directed, Bootcamp Assistant no longer offers the option ...
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What to do when mounting APFS from thumbdrive suddenly shows error and Disk Utility First Aid unable to fix

Seems like my APFS on my 512G SanDisk USB has gone corrupt. diskutil list /dev/disk0 (internal): #: TYPE NAME SIZE IDENTIFIER 0: ...
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1 vote
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How do I install Big Sur from a USB without having to change settings in Startup Security Utility

I sold my old Air on eBay and the customer returned it with "fakesoftware" as the username. I ended up keeping both the Mac and the money because this user was a scammer of some sort. Anyway,...
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1 vote
1 answer
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High Sierra Time Machine back up disk unusable

I recently switched out my old Seagate Barracuda HDD for a OWC SSD 3G in my late 2009 iMac 27", fantastic results. But when restoring from a Time Machine back up made just minutes prior opening ...
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Cannot access USB Hard Drive ExFAT in macOS Finder, greyed out in Disk Utility - Filesystem scan or repair failed::(-69845)

Today I was working in my USB 6TB WD_BLACK on MacBook Pro 14" M1, everything was working fine, removed it, sometime later I tried to connect the HD again but it won't show, this is the second ...
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1 vote
1 answer
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Cannot merge two partition together after dividing partition for installing Linux

I tried to install Linux after dividing partition. However, when I tried to merge the partition after erasing the partition with the error shown in the image below, I could not merge together. Can ...
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My apple internal SSD has become extremely slow

I have a 2017 13" MacBook Pro with a Apple 500gb SSD, model APPLE SSD AP0512J. I have noticed over the last year that my machine has become more and more frustrating to use - everything just ...
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Can’t erase Bootcamp volume to reinstall MacOS

I had MacOS Monterrey installed and wanted to dual boot with Windows 10. I used BootCamp to install Windows 10 on another partition I created. Somehow along the way, my macOS partition got completely ...
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Recover HFS volume, missing partition UUID

I am attempting to follow the answer post at https://apple.stackexchange.com/a/231027. However, the third partition does not have a listed UUID. Instead, I have the following. start ...
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1 vote
1 answer
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How to reinstall macOS with internet recovery with a fusion drive? No drive is available

This is continuation from my previous question "I installed Xubuntu without installing rEFind. Is it safe to remove the Linux partition at this point?", where I now have removed the Linux ...
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Can I test multiple disk simultaneously? (In disk Utility or a third party program)

For example, if I have multiple USB drives, an SD Card, an internal SSD, and multiple external SSDs and HDDs connected to a mac, I would like to save time and run First Aid/Repair/Erase/etc. on ...
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4 votes
1 answer
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Reclaiming partitions after old Linux installation

A long while back I recall installing Linux on my macbook. I have since deleted it, but the partitions on my disk are somewhat screwy. I cannot reclaim the free space to my main Macintosh HD partition ...
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1 answer
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Retake space from free space partition on Monterey

I have deleted a Bootcamp Partition, something went wrong and I now have 250 GB of "free space". Now I want to retake this space back. I already tried this solution but it didnt work for me. ...
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0 votes
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I cannot install Windows 10 on my Bootcamp partition

I have used Bootcamp assistant to partition my Mac mini. Then I boot up using my Windows USB drive with EFI boot. I can get to the part where I can see "Drive 1 partition3: Bootcamp" ...
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Owner and group of an hdiutil attached disk image

It's known that a disk image attached with ignored owners (vsdbutil -c prints disabled) will have owner and group to match whatever user is accessing the disk. However, the following bit from diskutil'...
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Startup Disk Got Missing

Firstly, I really apologize for what I've been doing so far on my MacBook Pro 2015. I was trying to install a Kali dual boot on my Mac, and this is what I did before my MacBook didn't boot up my ...
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1 vote
1 answer
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Time Machine believes that iMovie Library is deleted, when iMovie is open

I have a Mac Mini (Mid-2011 model), running Mac OS X 10.11.6, with iMovie 10.1.6. I have a iMovie Library.imovielibrary file in the ~/Movies folder, which contains all my iMovie projects. When I don't ...
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I can view folders on my external harddrive but not files

Using a Macbook Pro, 2015, system 10.14, I have an external harddrive and when I plug it into my laptop the folders will show up in the Finder but not the files. But this only happens some of the ...
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Boot from USB (Kali Linux, M1 Silicon)

I created a live USB on a Sandisk 32gb ultra dual drive luxe using kali linux live iso and balena etcher software (I also tried dd) but the USB won't show up in the boot drive selector Startup menu ...
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