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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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mac OS Installer lingers after failed Mojave 10.14.3 to 10.14.4 update

I've worked this problem w Apple Mac L2 across two phone calls lasting a total of 5 hours and escalation to L3 without a possible resolution, hence opening up my search to the world. My ask: What ...
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18 views

Older Mac (2012) Fails to Boot, any ideas?

Guys I'm running out of steam here... how do I copy files from a hard drive in recovery mode to an external hard drive on an older mac. First few things I did: boot into recovery mode and run the ...
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1answer
18 views

Recover data with file structure HFS+ on Mojave

I'm desperate and trying almost everything. That's what happened. I was having problem with Time Machine. One file was not letting time machine finish the backup. But to discover this took me a while. ...
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1answer
22 views

Completely reset Mojave disk

I’ve got a Mojave installation with an APFS drive. I’ve installed and uninstalled Boot Camp partitions several times over the years, and somehow things have gotten out of sync. I can now see the 500GB ...
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1answer
22 views

Other Volumes issue

I have no idea what previous MacBook Pro owner did, but here is my disk: I've got it with Mojava already and I think it's happened on OS update. Something like wrongly repaired of different file ...
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1answer
29 views

Time Machine partition won't mount

I have an external drive with two partitions, the first of which I use for Time Machine backups. The other day I got a message telling me that my drive had been unplugged without being ejected first (...
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1answer
21 views

Lost space after removing bootcamp

So I removed bootcamp and now there is a partition called "free space" that I can't remove. Here is my output from diskutil list: Here is the screenshot from disk utility showing the partitions: ...
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1answer
42 views

New SSD Fitted but Disk Utility Still Showing Old Disk

My 2013 Mac Mini with 1 TB Fusion drive was starting to run really slowly. I got a brand new 1 TB SSD fitted and am trying to restore from Time Machine, now. The restore can see the Time Machine ...
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1answer
32 views

Does Apple's Disk Utility 'Restore' function make a 'byte for byte' clone?

I've used Apple's Disk Utility to 'restore' a drive with accidentally deleted files. I need to know if this is an exact byte-for-byte clone that I can scan for deleted files on.
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33 views

Bootcamp not enough space

I am trying to install Windows using bootcamp in my Mac (Mojave 10.14.3). However, bootcamp tells me that I do not have enough disk space while in fact I have. I haven't got any local snapshots. In ...
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1answer
27 views

Can't format drive to APFS on older machine prior to 10.13 install

I have a Mid-2012 15" MacBook Pro that I've just put a new SSD into. I didn't format the SSD prior to putting it into the computer, my plan was to boot into "recovery mode" (not sure of Apple's term ...
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23 views

Why has my hard drive started spinning-up each time I eject it?

When I eject the hard drive, the disk starts to slow down but then the disk starts spinning at full speed about a second later. The hard drive is not mounted but it is still spinning. I’m afraid to ...
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38 views

unlock macOS encrypted Volume on linux

How can i unlock a Partition that has been created and encrypted using Apples Disk Utility on a linux machine? There are 2 formats one can encrypt Volumes with Disk Utility : CoreStorage encrypted ...
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1answer
32 views

Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF no backup [duplicate]

trying to delete a disk partition, the disks utility has given an error and now the Macintosh HD volume was not in APFS. But of course, being different, does not match anything with mine. It also ...
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1answer
42 views

Partition table error in external ARECA RAID

Thanks for trying to help me fix this problem. I have been having trouble with my external RAID, the error message that I got was that I have a partition table error. The RAID contains six 4 TB hard ...
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2answers
80 views

Cannot install Mac OS X Lion due to disk errors

I’m trying to install Mac OS X Lion after accidentally having erased my disk in order to reboot my iMac, which I did without backing it up. On a separate USB drive, I formatted and installed a Lion ...
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24 views

Blocking Disk Utility? [duplicate]

I'm looking for a way to prevent someone from creating a new partition on my hard drive in order to get around restrictions I've set. I've already tried setting an administrator account to no luck. ...
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56 views

Disk Utility First Aid Failed: fsroot tree invalid

I tried to run Disk Utility in my iMac. It said that: fsroot tree is invalid How to resolve this issue? Is my HDD going to die? UPDATE: Already tried /sbin/fsck -fy in Single-user mode. Same ...
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27 views

I can't delete a partition I created on my hard drive

The reason I have came here to post a question is because it seems that looking for the answer doesn't work. After attempting (and failing) to install bootcamp, my disk has for some reason been ...
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1answer
28 views

Macbook Pro mid-2012 Disk Utility First Aid Results Interpretation Help

My MacBook pro mid-2012 has been acting a little odd lately (freezing, losing track of files). I've run first aid in disk utility multiple times, but always get the same notes which suggests it doesn'...
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1answer
46 views

Recovering OS X partition after FFFF volume error and gpt add error

I am currently running a 2014 13'' rMBP. I recently tried to delete a Bootcamp partition in Disk Utility. When I tried to reboot my system, it did not boot OS X (Mojave) and instead could only boot to ...
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2answers
65 views

CoreStorage disk won't unmount

My roll-your-own Fusion drive has become corrupted somehow, and I want to start all over. However, it won't unmount. When I run (from another startup disk, of course) diskutil cs delete <Logical ...
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17 views

How to remove a Windows 7 bootcamp partition from Mojave? [duplicate]

I installed Windows 7 via bootcamp several years ago with much older version of macOS but now when I want to delete it via Boot Camp Assistant, it doesn't recognize my bootcamp to remove and also ...
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24 views

Macbook can't boot after a day of installing Mojave on internal SSD. Volume File System shows as “None”

I recently installed Mojave on my Macbook Pro with the Aura OWC 1TB SSD; after installing the firmware update. It worked fine for a day and stopped booting afterwards. I would very much appreciate ...
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1answer
49 views

Failed paritiong resizing partition in Mojave via Disk Utility (Planning to add it to Bootcamp) [duplicate]

(Using Mojave 10.14.1 on MBP Mid-2012) I was trying to resize my AFPS partition to add it later to my Bootcamp partition (in Windows) but the operation failed. What I did was to use Disk Utility's ...
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2answers
66 views

Creating an image from a Time Machine backup – “Operation Cancelled”

I want to convert an existing Time Machine backup (on an external HDD, encrypted) to a read-only archival image. I open Disk Utility and choose File » New Image » Image from Backup, which lets me ...
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1answer
12 views

Power off block devices

I would like a way to shut down the block devices to do safe removal by turning them off. On Linux there is the UDisks2's udisksctl power-off -b /dev/sdX command. Is there something similar? Or if you ...
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1answer
43 views

Brand new external hard drive formatted exFAT is mounted read only

I bought a new HDD, formatted as exFAT with mac. I moved files from my laptop to the HDD (moved, I mean, I also deleted them). It happened with a directory it got stucked. I quit the process of ...
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1answer
43 views

No install location available in Mac Internet Recovery

I tried to start my Mac & a folder with a question mark appeared. I researched on Google and discovered it was a problem with the Boot partition. I saw how to fix it. I used Opt ⌥ while booting ...
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0answers
16 views

Unable to manage my external hard drive

i am experiencing issues with my external hard drive; although it is recognized by my macbook air (2017, MacOs Mojave 10.14.3) i cannot access/modify it, neither with the disk manager app nor with ...
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1answer
49 views

Extand main APFS partition on MacOS Mojave 10.14.3

As it can be seen from the screenshot below my APPLE SSD is of size 500GBs, but my Apple_APFS Container disk1 is of size 450GBs. There was a Container disk 2 of size 50GBs before but I successfully ...
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392 views

Mojave: warning using disk utility: invalid bsd_flags

IMac: Using the disk utility, I get a warning: inode_val: object (oid 0x176461): invalid bsd_flags (0x10) strong text I have tried to erase HD and reinstall Mojave twice. In vain. Tried to restore ...
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127 views

Disk Utility First Aid in recovery failed to restore volume to original state

I was trying to repair permissions today on my Mac so I ran the Disk Utility's First Aid on my drive and it said that there was an Invalid Index Key and that my disk was corrupt and I needed to run ...
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1answer
13 views

Bypassing the Failed Disk “Read Only” Mode

On macOS, if a disk is failing, you will sometimes get the message below. The OS will put the disk into read-only mode. You can get your files off of it but you can't write to it. My question is, is ...
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1answer
53 views

Unable to use disk removed from Synology NAS with a Mac - wrong partition size showing

I have 2 x 3TB disks I've removed from a Synology NAS. When I try to mount these disks on OS X, they show as only having a single 800GB partition. I've tried erasing in the Disk Util app, but it only ...
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0answers
12 views

Manually mount a RAID 1 set - 2 of 2 drives are Online but Disk Utility cannot mount, set name is not displayed

Overview: WD My Book Thunderbolt with 2x WD 4TB drives (factory-fitted), connected to 2014 iMac (macOS Sierra 10.12.6) via Thunderbolt 2 port. Drives are configured as RAID 1. Both drives are listed ...
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2answers
22 views

How do I copy files from macbook to external harddrive using single user mode?

My MacBook pro shut down due to an error, and now I can't log in again. I've tried creating an image using Disk Utility but it fails every time. I have my hard drive connected to my MacBook but when I ...
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0answers
11 views

Macbook Pro (encrypted disk) hangs during login after some “low hdd space near-crash”

My macbook almost crashed when it was low on HDD space. I emptied about 10% of HDD, but still there were some glitches (some apps couldn't start up and so on), so I restarted the laptop. Restart didn'...
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1answer
34 views

Creating a bootable USB

I am trying to restore a dead windows machine, all I have access to currently is an old mac. I am trying to accomplish this by downloading the Win 10 1809 iso and creating a bootable USB stick with it....
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33 views

diskutil mac error 69519

I needed to delete my bootcamp partition but bootcamp wouldn't let me, so I deleted the partition and also the recovery partition of windows from diskutil. The problem is when I try to add the free ...
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1answer
96 views

Tried to fix filesystem type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF and probably made it worse

I have a MacBook Air 11 inch which I recently tried to install Linux on with a swap partition and a root partition. In my stupidity I used the “disks” program under “try ubuntu now” to delete the ...
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0answers
49 views

GUID Partition Attribute not working on MacOS

I'm trying to prevent automount on a device. The device contains only one FAT32 GPT partition. I have set the GUID Partition attribute to 63 using gdisk (i.e. do not automount). I have also tried ...
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2answers
40 views

Macbook Pro 2012 MD101 cannot bootup, cannot reinstall OSX

Problem Description About 5 years ago, I upgraded the original HDD to SSD (Samsung 840 evo), everything was ok until last November. After a trip to an examination (4 hours drive, 2 hours out, 2 ...
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1answer
39 views

can't shrink the system partition in order to clone and swap disk

I wanted to swap my 1TB old iMac HDD to a 1TB SSD but apparently it's not that easy with diskutil under mojave recovery system. From a disk to disk it's impossible since the disc is complaining to not ...
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2answers
33 views

Can't mount writable images in Disk Utility

I'm trying to add a file to an ISO then reburn it. In Disk Utility, I mount the original ISO, choose "Create From ..." to create a new image file with "read/write" access and save it. When I mount ...
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1answer
51 views

The startup disk cannot be partitioned or restored to a single partition. Windows 10 and Mojave iMac Fusion Drive

The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp ...
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21 views

FusionDrive not mounting because the GUID Partition is messed up after removing one physical drive

so I got a really delicate situation going on. I exchanged my mechanical HDD with a SSD and turned the 1TB HDD into a external USB device. So far so good, everything works like a charm. Yesterday I ...
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0answers
22 views

How can I merge two APFS partitions on the same drive? [duplicate]

I have a 140GB partition I would like to merge into an existing partition. Both are APFS formatted. How can I merge these two containers ? Container Disk2 is my MacMini OS Mojave 115.9GB Container ...
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2answers
72 views

How do I clone from a Mac OS Extended (Journaled) spinning hard drive to a new SSD on 10.13.6

I have a MacBook Pro (13-inch, Mid 2010) with a 500GB spinning hard disk boot drive with High Sierra 10.13.6. Disk Utility reports the drive as "SATA Internal Physical Volume - Mac OS Extended (...
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146 views

Mac OS running slow after Mojave install and disk appears to be corrupt

I currently have upgrade OS Mojave on my laptop, imac at home and imac at work. Don't ask me why I did all at once, other than not thinking straight. After the install performance has dropped on all ...