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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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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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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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 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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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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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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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 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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How to unmount external disk with one click (AMPLibrar issue)?

After an update from 10.4.6 to 12.2.1 The MacOS has a new feature: Sometimes it is not possible to unmount an external disk by the click on the unmount symbol in the finder Instead, the Mac now says ...
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Fusion Drive - Partition and Excessive Free Space Combined is Greater than Actual Storage Capacity

iMac 2017 1 TB HDD 28 GB SSD Fusion Drive Recently, I decided to do a clean install with diskutil erasedisk, reformatting through disk utility, and resetting the Fusion Drive to wipe everything after ...
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1 answer
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MBP running 10.15.7 shuts off on boot/corrupted boot filesystem

I've been trying to fix this issue for the past week or so. Some sort of boot issue seems to occur once a year on this machine, and I will be upgrading but need this one to hold on a little longer. ...
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I can't delete storage "containers" from my disk

I've tried as much as I can find, anything with diskutil in the terminal or in the GUI hasn't worked. Asahi doesn't show up in the GUI or in the boot options now. I want to completely erase all the ...
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Screwed up my disk messing with diskutil. Can't re-partition

I was messing with diskutil and ended up "configuring" my disk to where it will not repartition properly. When I attempt, it tells me disk0 is being used by kernel process 0. I am wondering ...
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Can I delete a partition and leave the space unallocated in Monterey?

I'm trying to shrink my MacOS (Monterey) partition using Disk Utility to reclaim some space for my Bootcamp partition using Minitool Partition Wizard on the Windows side. I succeeded in shrinking the ...
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can't erase/restore/first aid disk0s3 apple disk utility

Hi there, I experience a lot of trouble when wanting to free the space previously taken by allocating it to Windows Boot Camp. Now, I cannot erase/restore/first-aid this disk. The main problem seems ...
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1 answer
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How to get full "Media name" from the command line

From the Disk Utility GUI I can pick a physical disk and then click info and I get a Media name of ST325062 4NS Media (this happens to be disk4) From the command line I can do diskutil info disk4 and ...
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2 votes
1 answer
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How to delete redundant disks on disk utility

I reinstalled my OS a couple of times and ended up with many redundant disks as you can see in the picture: I want to get rid of them. Of course, I tried the following diskutil commands: eraseDisk : ...
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Script for freeing storage taken by "Other" in Mac?

Every time I have to do this, I go to ~/Library/caches, and then ~Library/Application Support etc etc. It is a tedious process. Is there some script online that we could just run with Sudo & make ...
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MacBook crashing whenever I try to do something

I changed my MacBook Air 2017's SSD to a third-party one, so I tried to install macOS on it using a USB boot key but whenever I try do something with the disk like installing Monterey or erasing disk, ...
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Restoring Deleted Bootcamp Partition

I damaged a bootcamp install on container 'disk1' by deleting the windows partition there from disk utility. Anyway to get that back? I really just want 1 or 2 files on from that partition. Perhaps ...
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Expanding a Raid 1 Volume

We've got a Mac Pro (2012) that we use (mostly) as a file server. It's a local back up for dropbox files that we keep in a Raid 1 volume. Our Raid 1 array is 2 disks. Over time we've added larger ...
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1 answer
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External SSD connected with adapter won't show up in Disk Utility

I recently bought an SSD (SanDisk Plus, 480GB, 2.5", SATA III) and tried to connect it to my MacBook Pro (M1, 2020) by chaining: a USB 3.0-to-SATA III adapter: and a USB-3-to-USB-C USB-C PRO ...
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Unable to erase and format new USB drive

I have a new out-of-the-box 16GB USB flash drive and I am unable to erase it in macOS. I've tried via Terminal command, Disk Utility nothing works. This is what I get when I insert my USB drive This ...
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4 votes
1 answer
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When diskutil mount vs mount?

I know how to mount in Linux at /mnt through the mount command, the same command exists on macos too. After to read the following tutorial: Mount & Unmount Drives from the Command Line in Mac OS ...
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1 vote
1 answer
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Removed a 50GB Linux Partition with Disk Utility and can't boot into macOS anymore

For a few years, I've had Linux Mint installed on a 50GB partition on my 2015 MacBook Pro. Today, I decided to remove the installation (I needed the extra 50GB and wasn't using Linux Mint anyway) and ...
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Should diskmanagementd be the second largest process writing to my disk?

Just looking through activity monitor and noticed that apart from kernel_task, it is consistently the second process in terms of amount of data wrote to disk. I only ask as I had a disk writes ...
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2 votes
0 answers
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How do I create a 1GB FAT32 partition from my Mac HDD?

I'm trying to create a small FAT32 partition which I can use to transfer files between my Macintosh HD partition and the Windows Bootcamp partition on my Mac. I'm using Big Sur. I've gone to Disk ...
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1 vote
1 answer
336 views

How to boot Kali Linux on a Mac without using Grub?

I am trying to install Kali Linux on an external hard drive. I downloaded the kali-linux-2022.1-live-amd64.iso file and checked with shasum -a 256 kali-linux-2022.1-live-amd64.iso. I am using a 13&...
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3 votes
1 answer
459 views

FileVault and erasing SSD: disk utility didn’t ask for any code or password to erase despite FileVault being on

I am trying to sell my MacBook Pro 2011 and want to erase the SSD for good. It’s running High Sierra. Despite what Apple says, I read it’s better to have FileVault turned on and then erase the machine....
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Disk First Aid "Disk Full Error"

I'm trying to fix an external drive by running Disk Utility's First Aid, and it can't because of this Disk Full Error (the drive was nearly full). Is there anyway I can get around this? Get it to use ...
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2 votes
1 answer
34 views

is it normal for USB 3 external disks to take 5 minutes to mount?

I have a 2020 M1 Mac and an old 27" late 2012 iMac. I have two USB 3 disks, both encrypted APFS with two partitions. One is 5TB and the other is 1TB. Both use regular hard drives, NON-SSD. I ...
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Macbook Air M1 clean reinstall stuck without Macintosh HD

I am trying to reset a Macbook Air M1 and after I was stuck on some issue where I couldn't create the user during the setup process (M1 Mac clean install, getting stuck at "Create a computer ...
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fsroot tree is invalid. All data still on disk but only 10% normally visible

I woke up today to start working on an audio project but upon loading I got some missing files errors. When I went to check, indeed, most of the folders I had shut the computer down with the night ...
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Fixing Sparsebundle That "Is Not Readable"

I'm a video editor, and a relative neophyte to fixing issues like this (any handholding is appreciated). In an attempt to backup large video files to box (when running into 5 GB storage limits) a ...
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Location of Disk Utility created volume?

Upon creating a new volume via Disk Utility in macOS (12.2 Monterey), where does the actual DMG file get created / live? (aside from the mount point /Volumes/newvolume - is there a DMG file somewhere, ...
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Corrupted macOS startup volume type FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

My iMac was working (moving GB of files), when the electric current was taken by the energy provider close the current for works or any other reason. Now, the entire APFS container containing the ...
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1 vote
1 answer
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Disk Utility with extra Mac HD after clean install on Monterey (formerly Big Sur)

Not sure if I need to re-format and re-install again. Is it normal to see so many Mac HD, and should I try to remove the extra ones? Had some HD issue where somehow there was no space left and thus ...
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