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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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Help - Have I bricked my MacBook Air?

I have a late '10 MacBook Air with 64gb ssd, it was getting very slow and very full so I decided to wipe and start afresh. I followed some online instructions, signed out of everything then erased ...
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16 views

Repair Solid State Drive after Formatting Error

I recently had help repairing my APFS SSD after the format was set to FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF. The solution in this thread worked in the sense that I was able to access the contents of ...
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Macintosh HD not showing in Disk Utility or Installer, unable to install to it

My Macbook has been working out great for a long time. For a while I used solely Bootcamp because I liked the Windows interface, but switched back to macOS recently and updated to High Sierra. However,...
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Missing “view” button in disk utility

I'm unable to encrypt an external hard drive because the encryption option seems to be missing. Various answers pointed to doing something with the 'partition' button, but that button is greyed out. ...
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112 views

macOS Mojave (Disk Utility): Object Map is Invalid

I was trying to resize the APFS volume and remove the free space until I got this error and Disk Utility is unable to do anything about it. [The full order of what happened] Running operation 1 of 1: ...
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14 views

Want to recover files after partition shows FFFFFFFFFFFFFFFFF [duplicate]

So a few months ago my mac partition started showing FFFFFFFFFFFFF....... after I tried to install a linux distro then I tried to fix it by doing something in Terminal in recovery mode, I have a 100 ...
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20 views

How can I delete files on a full Time Machine volume?

while doing a backup – huge because of a lot of new RAW image files – to my external backup-volume (4TB WD MyBook that never showed any problems, age ca. 2 1/2 years) TimeMachine stopped with the ...
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20 views

Different recoveries can (cmd+opt+R) and cannot (cmd+R) find new ssd

I bought the SSD Transcend 850 to replace my old stock ssd and I was trying to install it. Now, if I press cmd+opt+R utility disk lets me see the new ssd and initialize it but I can't install Mojave ...
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14 views

Several Issues with Erasing a Partition Along with Its Recovery HD and/or Boot OS X

Please note I have everything backed up. Disk Utility from Lion with its Debug menu enabled to “Show all partitions”: Disk Utility from High Sierra: diskutil list command ran in Terminal: ...
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Merge container disks

I want to merge the empty container disk3 to existing container disk2. How can I do it?
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26 views

Problem removing APFS partition

A few months ago I tried to install Windows 10 on my Mac (High Sierra). This was unsuccessful and left me with a APFS partition of 49.5 GB called "BC1". When I try to delete this partition it ...
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Is it OK for Time Machine to take a long time to decrypt a freshly formatted encrypted disk?

I'm new to Time Machine. I just this week got an external hard disk and am starting to use it. My Time Machine backups were spending a significant amount of time in the encryption phase. Upon reading ...
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Reclaim unaccessable harddrive space on mojave

I installed Mac OS Mojave on a new partition for a clean system. As I tried to merge the APFS container of the old Mac OS with the new APFS container with mojave (following the top comment of this How ...
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1answer
38 views

“APFS Container Resize error code is 49153” when adding MS-DOS (FAT) partition

I am trying to create a 20GB MS-DOS(FAT) partition on my Macintosh HD drive. Upon defining the partition in Disk Utility and running the process, it throws up this error... Running operation 1 of 2: ...
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23 views

Lost disk space after execute diskutil eraseVolume in terminal

I have a MacBook Pro (Retina, 15-inch, Mid 2014), and i upgrade it to Mojave (10.14) the day before yesterday. After i execute the command "sudo diskutil eraseVolume apfs none disk0s8", the problem ...
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51 views

Resize APFS Container

I've just been able to reassign the correct format to my SSD to APFS, see this question. however I notice that my Container isn't set to the proper size. I assume this is because the drive previously ...
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23 views

Deleted Bootcamp partition through disk utility and messed up everything

I deleted my bootcamp partition to redo the whole process to make a higher capacity windows system. Then I tried bootcamp again and it says "Your disk could not be partitioned" and "An error occurred ...
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130 views

Flash Drive not mounted on macOS Mojave

I have a flash drive which was formatted on Mac using the Disk Utility. But when I'm trying to replug the drive it shows up in disk utility but says Not Mounted. I'm unable to erase as it says ...
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8 views

Access macintosh hd file contents from external bootable drive

my MBP 2015 running Mojave just broke. After entering my password and hitting 'enter', all my MBP shows is a black screen with a spinning wheel (NO cursor). I've tried almost everything I could find ...
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1answer
37 views

broken partition table after formatting drive with apple file system (apfs)

I wanted to try out apfs, therefore I formatted my external HDD with it. Now the partition table seems broken. How can I reinitialize the drive? My goal is two create two HFS+ partitions, each 1TB on ...
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1answer
28 views

Remove all partitions and reinstall MacOS

I want to reinstall macOS but when I tried to repartition everything it only gave me 125 GB to install the OS on even though it's a 3TB drive. I think there may have been some kind of partition ...
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17 views

Macbook air 100 GB hidden space + error when verifying volume

I used DailyDisk to analyse my Macbook Air (Late 2014, 256GB SSD). Result: 100GB of hidden space => No idea where this is coming from What I tried: - tmutil listlocalsnapshots / => I have no local ...
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122 views

How to convert FusionDrive to APFS?

Backstory: Installation of MacOS Mojava failed on my late '12 iMac with exception: com.apple.DiskManagement error -69854. I can find few other questions with this problem, but the general consent is, ...
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macOS Mojave: Tried to merge disk partition into primary one and now 20 GB of space is “lost”

SOLVED: My issue is solved. I used recovery mode to erase entire drive and create new APFS disk which was created with correct size. I then used my last Time Machine backup to restore the system. ...
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Free Space Differs Between DiskUtility, Finder, TimeMachine, and Storage Tab

The actual question: Time machine calculates the size of my backup as 925GB, while diskUtility shows only 858GB is used, while OmniDiskSweeper and GrandPerspective apps show that I am only using ~...
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13 views

Disk Utility “restore from” list does not include any volumes

I want to copy a volume from an old MacBook Pro to a new one. I mounted the old one using Target Firewire Mode. I made a new APFS volume on the new machine. When I tell Disk Utility that I want to ...
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25 views

200GB lost on APFS boot disk

Recently (last month) I upgraded from Sierra to High Sierra on one of my Macs. I now am confronted with 200GB of the 500GB 'lost'. That is, when running OmniDiskSweeper as root, I find 255GB files, ...
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1answer
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external hard drive still shows in disk utility after it was removed

I unmounted and removed my backup disk called TimeMachine, but it still shows up in the disk utility app. I tried running $ diskutil unmount /dev/disk3s2 and $ diskutil unmountdisk /dev/disk3 ...
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Accidentally erased APFS partition while resizing Windows Bootcamp disk

This is my first post here. I recently wanted to add some more space to my windows' partition so I shrunk Mac HD by 60GB and rebooted. I then used windows to join the unallocated space with its ...
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22 views

Cannot increase partition size in macOS

I have about 35 GB free space I want to add to my Macintosh HD partition. However the ability to increase this partition is greyed out. I cannot seem to find a good guide on how to add this free ...
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30 views

Possible to boot Mac Pro from two PCIe M.2 AHCI PCIe SSD in RAID 0 on macOS High Sierra?

I have an M.2 AHCI PCIe SSD and I am considering purchasing a second one to install both in a 2009 Mac Pro in a RAID 0 configuration using Disk Utility similar to the setup in this video. I have used ...
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1answer
35 views

How to merge two partitions

How do I merge disk0s2 and disk0s4 I followed this thread and at step 3 I get the following error Error: -69519: The target disk is too small for this operation, or a gap is required in your ...
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1answer
80 views

Disk Utility First Aid Fails on Time Machine Disk

I've been backing up my Mac with Time Machine on an external hard drive for several years. I recently plugged the external drive into my Mac, it spent a long time running fsck_hfs and finally showed ...
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1answer
170 views

Can ContainerToInvert file be safely deleted?

After previously upgrading to High Sierra and converting my boot drive to APFS, I recently migrated to a new (larger) SSD boot drive. While setting that up, Disk Utility gave me an error when ...
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1answer
41 views

Erased disc incorrectly now I have “Apple ssd ap0128J Media” instead of Macintosh HD and broken software

I was preparing my laptop for a sell and booted into recovery mode. I then went into disk utility, selected my Macintosh HD and erased it. When I rebooted I got stuck on a screen with a "prohibited" ...
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1answer
71 views

What Would Cause APFS Volumes to Show Up Under the Wrong Disk?

I’ve got a pretty interesting APFS problem. There are two volumes on one, internal drive, and two that were cloned from it, on an external. All four volumes show up under the internal drive, even ...
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Deleted Windows Through Disk Utility, 125GB in “Free Space”, Disk Utility Fails to combine in either Internet based recovery or MacOS Based Recovery

What the Title says, and for all you people who tell me to boot to recovery I answer the following: Disk Recovery has vacated the premises of my drive for no reason.
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2answers
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How can I stop DiskUtilities from requesting permission every time I try to create an image from a CD

I have a big stack of CDs from the 90s that I want to keep the data from, but don't want the physical CD anymore. So I'm using Disk Utility to create the disk images. Every time I do (by right-...
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Mac Disk Security Question

I have a laptop whose disk was encrypted during installation, like any standard security measure it requires a password during log in and prevents use of Target disk mode which works fine as long as ...
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1answer
460 views

How to fix my corrupted APFS container?

I'm using MBP late 11 running 10.13.2 on Samsung Evo 850 250GB internally. Everything was fine for months but few days ago something horrible occurred. I'm so shocked and urgently need your help. ...
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1answer
72 views

Cannot remove bootcamp partition

My mac (running El Capitan) has recently run out of storage space so I have been trying to remove my bootcamp partition to restore the full capacity of the OS X partition. When I try to remove it ...
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0answers
34 views

Disk Utility on MacOS 10.13.6

Folks; Using Disk Utility on High Sierra (macOS 10.13.6) I've got the following: The UI appears to allow each of them to be selected and the '-' button remains active. Note the text shown also ...
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1answer
302 views

Missing Firmware Partition after NVRAM reset in MacOS High Sierra

Maybe someone can help me. Earlier today, I was working on my MBP and it wouldn't read my external flash drive, yet it read it last night before I ejected it. However, today it wouldn't find it. I ...
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1answer
36 views

APFS Volume Total Shows Less Free Space Than Container and How Can I Reclaim Space

So I have a bootcamp volume which has windows installed on it. I used MiniTool partition wizard to shrink the bootcamp size from 60 GB to 40 GB to reclaim 20 GB for my Macintosh HD. That operation ...
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1answer
60 views

Cannot create larger partitions with APFS filesystem

I am trying to use Boot Camp Assistant to create a partition for Windows that is 100 GB. However, I am unable to create a partition of that size. Trying to create a 100 GB FAT32 partition (via the ...
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2answers
59 views

How To Let My MBP know that a USB is bootable?

I have got Unetbootin and have put the files onto my drive which is properly formatted as MS-DOS(FAT) and GUID. I have several folders and files: [BOOT], boot, casper, dists, EFI, install, isolinux, ...
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Cannot rename exFAT volume with diskutil : SanDsk64 does not appear to be a valid volume name for its file system

I type the following commands to try and rename an exFAT volume from "NO NAME" to SanDsk64 : $ diskutil rename "NO NAME" SanDsk64 SanDsk64 does not appear to be a valid volume name for its file ...
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14 views

Remove windows partition without bootcamp [duplicate]

I tried following this question, but the solution with most likes didn't work for me, I got the error message: diskutil: did not recognize verb "**eraseVolume**"; type "diskutil" for a list. Using ...
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How do I remove a “phantom volume”? (Volume format does not support resizing.)

I am trying to set up Ubuntu for dual boot on a MacBook Pro 2013, as outlined in this answer. My issue is that when trying to follow the steps in the linked instructions, diskutil resizevolume disk0s2....
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1answer
46 views

External hard drive encryption using Disk Utility

I'm looking to encrypt an new external hard drive via disk utility (Mac OS Extended | Journaled Encrypted) as shown on https://www.youtube.com/watch?v=FvfrIyS1K04&frags=pl%2Cwn. Will this drive ...