Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [disk-utility]

Apple's built-in disk management utility for the mac. Erases, formats, and restores volumes and drives.

0
votes
1answer
39 views

My External Hard Drive's format changed to FAT16 without any reason

I have an ADATA HD710 1TB external hard drive which I use mostly in my Mac Mini 2011 and I have created two separate partitions for my drive. One of the partitions has APFS (Apple File System) format ...
0
votes
1answer
34 views

How do I delete purgeable space detected by Disk Utility?

I am French so I apologize in advance for any possible language errors. I'm running macOS Mojave (version 10.14.2). Recently, I tried to run Bootcamp because I would like to install Windows. I went ...
2
votes
1answer
14 views

Unable to format sandisk ultra 16gb usb3.0 pendrive in mac

I have been using Sandisk Ultra usb 3.0 pen drive since Jan, 2016. I live in Mumbai. But previous month, I created bootable usb with mac os Mojave. Then I formatted pen drive. Dont know what happened, ...
0
votes
1answer
11 views

Identify hard drive in Time Capsule

I have Time Capsule of the 1st generation (the flat one) wherein I changed the hard drive for one with 3TB capacity. This was 2 years ago. Now, the time having passed, I don't have any information ...
0
votes
1answer
35 views

Disk Utility cannot detect a good portion of my storage space

While trying to set up Boot Camp, I received an error shortly after the process finished. Checking Disk Utility on both the software and Terminal, I was left with the space I set for my Boot Camp ...
1
vote
1answer
36 views

How to recover lost partition after diskutil erasevolume? [duplicate]

I have the same problem as How to recover lost partition after diskutil erasevolume noformat The op in that post solved by going into Internet Recovery. I did that but problem remains. Reinstall of ...
0
votes
0answers
14 views

Disk Utility Producing Unreadable DVD

Attempting to create a bootable Ubuntu 18.04.1 LTS DVD to replace MacOS X 10.7.5 on an MacBook (Early 2008). Disk utility is producing unreadable discs at the end of the burn process. I've followed ...
3
votes
0answers
51 views

Unable to erase disk with Terminal and Disk Utility, error -69877 “Couldn't open device”

I am referencing this question from another user: Unable to format / erase hard drive For some reason, this pesky Kingston drive I have does not want to erase on Disk Utility nor with the use of ...
0
votes
2answers
39 views

How do I partition a hdd with windows on it

I'm trying to partition an hdd with windows (bootcamp) on it into a 465gb partition and a 35gb partition. (macOS is on a different internal ssd.) Disk Utility didn't let me create a new partition on ...
1
vote
1answer
35 views

How can I adjust the size of the OSXRESERVED partition that Boot Camp Assistant uses?

I have a Windows 10 ISO that is 5.3 GB. The Boot Camp disk image that Boot Camp Assistant downloads is 2.8 GB. Together these are more than 8 GB. Boot Camp Assistant creates a partition named ...
1
vote
1answer
24 views

I erased an APFS Volume containing a second OSX installation (trying out Mojave) but my Mac keeps trying to boot into it

I added a Second Volume to my Main APFS Container to install and try Mojave (I'm running High Sierra). I decided that Mojave is not for me and I erased the volume from Disk Utility. My Mac still ...
0
votes
1answer
14 views

CRC (Cyclic Redundancy Check) error not appearing in disk utility

Recently, my Mid 2012 13-inch MacBook Pro displayed a blank, gray screen instead of booting up. I suspected there was a problem with the hard drive cable, so I took it in to a (non-Apple) repair shop ...
0
votes
0answers
26 views

Why can I not open/mount a .img file?

Earlier today, I was looking for a way to create a .img file either with Terminal or Disk Utility. I managed to find a way, but as the title says, I can't open or mount the .img file. So basically I ...
0
votes
1answer
49 views

Silencing “Your disk is almost full” notifications. What works? [duplicate]

I've tried this Silencing "Your disk is almost full" notification That didn't work. I've tried deleting "diskspaced" from the disk using sudo, it didn't allow me to delete it. What's a ...
0
votes
1answer
24 views

Solving bootcamp error message to erase windows partition

I have a Windows partition created with Bootcamp that I would like to delete but when I launch the Boot Camp Assistant I get the following error message: I have a looked at several threads/...
0
votes
1answer
55 views

How do I increase an APFS partition size?

Also, will converting the 400gb and 600gb partitions into "Free Space" partition work for this? How do I create Free Space partitions? I'm using High Sierra 10.13.6 for this. In the end I want to ...
1
vote
1answer
12 views

How do I get the memory allocated to a ramdisk back?

I wanted to use a ramdisk. SoI created one, filled it with 3GB data and unmounted it. Like this: diskutil erasevolume HFS+ 'ramdisk' `hdiutil attach -nomount ram://8388608` cp -pr some3GBdirectory /...
0
votes
0answers
31 views

Mac asks me to run Disk Utility in Recovery, while in Recovery

I have a WD EasyStore Drive, and for some reason it was bugging out with Time Machine today. I decided to run First Aid on the drive and it found a corruption it wanted me to fix via Recovery mode. ...
2
votes
1answer
36 views

Restore main APFS container to full disk

I tried installing Windows 10 on my Macbook Pro with Bootcamp on Mojave, but through a series of manipulations, I broke my Windows installation and Bootcamp would not let me restore my system as it ...
2
votes
1answer
20 views

Space lost after bootcamp fail

This is my first apple computer (MacBook air 2015). I had to install windows on this because my school wanted it. I tried installing through bootcamp and it failed the message was "windows support ...
1
vote
1answer
29 views

Unable to merge partitions or reinstall OSX

I have 1 SSD disc in MacBook Pro mid 2009 with 2 partitions and I would like to make a clean installation. So.. using Disc Utility I have erased both partitions (OS X Extended - Journaled). So far so ...
1
vote
0answers
86 views

Unable to format internal drive as APFS on 2018 MacBook Pro

I’ve recently ran a semi-routine clean install on my 2018 MacBook Pro. This involves the following steps (in the given order): Creating a USB installer with the latest macOS Mojave 10.14.2. Booting ...
0
votes
1answer
17 views

Mac OS Sierra - Can't merge former time machine partition on external hard drive

I have an external hard drive with two partitions. One partition was used to save files and the other was dedicated to Time Machine. Now I have a new hard drive which I use exclusively for Time ...
0
votes
0answers
12 views

Unable to partition mid 2014 MacBook Pro SSD on Sierra 10.13.6

Just trying to partition my 500GB SSD so I can dual-boot linux and my MBP doesn't want to let me do it. I've watched countless videos and no one seems to be having my problem. I attempt to the ...
1
vote
0answers
34 views

Mac doesn't detect CD-ROM properly

I have a CD-ROM 700 MB, 80 Minute Recordable Disc that I want to burn a video on, and with some help I've found Burn and DVDStyler. However, both do not recognise my CD-R. When I enter the CD-ROM, a ...
1
vote
0answers
13 views

How can I mount a removable device as un-ejectable [duplicate]

I have a Micro-SD card which I keep permanently inserted in my MacBook Pro using a nifty Mini-drive. I doubt it should matter, but this is a 13" early 2011 MacBookPro, running High Sierra (hardware ...
1
vote
0answers
48 views

Resizing APFS partition stuck on “Checking the object map”

I attempted to add a partition to my boot drive in macOS High Sierra. In the process, Disk Utility was going to resize my Container disk1. The boot partition is APFS and is in that container. On the ...
1
vote
1answer
25 views

Removed first partition, how to resize second partition into the free space?

Mac Mini running Sierra. I have a 500GB internal drive, that was partitioned into two volumes because at one point I wanted to test upgrading from Mavericks to Sierra but wanted to make sure ...
0
votes
0answers
37 views

Disk Utility fails to erase external drive

The other night I was working with my 6 month old MacBook Pro with a 6 month old external drive attached. I shifted around in my seat and the external drive slipped and abruptly disconnected from the ...
0
votes
0answers
47 views

How to solve diskutil verifyVolume disk0s2 error? "unrecognized file system (-69846)

I have completed the instruction from this link Data Not Backed Up, Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF but in the end, when im doing verify for my disk and volume, there is an ...
0
votes
1answer
79 views

How can I partition my disk?

I have a macOS Mojave (10.14.2) and I would like create a 20 GB MS-DOS (FAT) partition on my 128 GB APFS disk. But Disk Utility constantly gives me an error: My Time Machine is turned off: My ...
0
votes
1answer
11 views

Recovery partition fills up half of the disk, cannot resize

So I noticed something was wrong with my partitions in Disk Utility as the Mac HD only occupied half of the storage, I booted into UBuntu on a USB and from there I found out that the recovery ...
-1
votes
0answers
10 views

Bootcamp Partition cannot be Removed [duplicate]

i have a Mac Mini with a 1TB HDD on OSX Mojave. I recently installed windows on a 250gb partition via bootcamp and as of recently decided i need more space. I booted up OSX normally and went into Disk ...
-1
votes
0answers
24 views

Removed external disk stuck in diskutil list multiple times

I've ran into an issue on my 2018 MBP running 10.14.2 where an external disk still shows up in 'diskutil list' after eject and removal. The external disk does not contain anything TimeMachine related, ...
-1
votes
0answers
21 views

External SDD (exfat) shows different size from mac os disk

I have an external ssd with exFat filesystem. I've copied some files from mac to it, no other operations. When I go checking with disk utility it shows: about ten times the size of original mac os ...
-1
votes
0answers
33 views

diskutility mount reports disk mounted; but it fails to appear

I have an external hd which can be read by both my iMac (Mojave) and my old G5 Powermac (Tiger). Since it was rather full I cloned its contents to a new external drive. The new drive mounts perfectly ...
3
votes
1answer
37 views

I tried activated the option to partition a disk, instead all my drive data disappeared in a few seconds

I read online that there was a command line to activate the partition option on Disk Utility: diskutil partitionDisk disk4 1 GPT HFS+ newdisk Which is just supposed to unlock the possibility to ...
1
vote
1answer
23 views

Unable to format SD card

I was using my SD card on my phone. One fine day it showed a message that it was corrupted. I put the card in an adapter and plugged it into my iMac. I was able to read and copied all I need. I ...
-1
votes
0answers
35 views

rEFInd not finding linux partition

I was dual booting ubuntu and osx on my macbook pro a bit ago with rEFIt. After an update it stopped working and I hadn't looked into it until now. Now I've got rEFInd working. My harddrive is still ...
1
vote
0answers
20 views

Partitions name on startup boot selection are listed with the wrong name

I partitioned a USB hard drive as above /dev/disk4 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme ...
2
votes
0answers
57 views

Encrypted disk in Windows 10, unreadable by macOS

I encrypted by external HDD with exFAT format using VeraCrypt on a windows machine. When I plug in the encrypted disk into MacBook (running macOS Mojave), I get the error "the disk you inserted was ...
0
votes
1answer
45 views

Merge partitions after windows installation failure [duplicate]

After windows failed to install, I was left with my partition, which bootcamp was supposed to remove but it froze and I exited it (probably not the brightest idea ever). So now I have these extra ...
6
votes
2answers
402 views

Resize APFS partition in Mojave

I'm attempting to resize a partition that's too small for my needs. Here's the output from diskutil list: ~> diskutil list /dev/disk0 (internal): #: TYPE NAME ...
3
votes
1answer
159 views

200GB unused, but can't change APFS container size due to minimum requirement

I want to create a partition with a different filesystem but in order to do that I need to resize my APFS container. This container has 292,4 GB used space. Its minimum size is 500,07 GB. This ...
-2
votes
1answer
63 views

A script to shrink and compress DMG disk images does not seem to work well in my scenario

I'm trying to resize the *.dmg of my MAC OS X installation file because I have only DVD of 4.7 GB and not dual layer disks,at the moment. The problem is that the dmg file is almost 7 GB large and I ...
1
vote
1answer
31 views

Disk Utility hangs after adding a partition with gpt; diskutil still works just fine

I'm trying to shrink my Time Machine partition to make more space for Windows games. The shrink went perfectly, but I was left with a chunk of free space Disk Utility wouldn't let me make a partition ...
1
vote
1answer
37 views

Is it faster to resize a Time Machine partition, or completely wipe it and back up again from scratch?

I have a ~500GB Time Machine partition I'd like to shrink slightly. My internal source partition is around 400GB. Resizing the partition would be extremely slow, since Disk Utility has to check all ...
1
vote
1answer
95 views

Bootcamp Error: The startup disk cannot be partitioned or restored to a single partition [duplicate]

Earlier today, I tried to install a Boot Camp installation of Windows 10, but there was an error and was removing the partitions it made, but I accidentally closed the window and now I'm stuck with an ...
1
vote
0answers
38 views

Eject an external disk after improperly disconnecting it

I have a repeatedly run into this problem. On the one hand we could say, "always remember to eject your external drives before removing them". However, it's a matter of fact that I will forget, at ...
2
votes
1answer
39 views

Password protect disk images on Mac from deleting

I know that I can create a password protected dmg file with more folders in it. But I want to know if there's a way through which I can prevent any action on the dmg file itself. Because right now, if ...