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Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

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Having this weird issue where it's like my APFS container that I'm booted into is not mounted? (hackintosh)

I had this partition setup (I only have one SSD) that was something like this. This is not a direct copy of what it looked like, I am doing it from memory: /dev/disk0 (internal, physical): 0: ...
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After windows partition change, OS X partition goes to NTSF [duplicate]

I'm struggling with lack of OS X system, after i've used ESUS partition tool in Windows (i have High Sierra and Windows installed via bootcamp). Recently i've found that windows partition resize ...
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High Sierra partition gone after updating windows (bootcamp) [duplicate]

I have High Sierra and Windows 10 installed on my mac (2017). I was working on windows, and atfer shutdown, Windows asked to update. So i've clicked Update and Restart, and after that, Mac restarted, ...
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Is it possible to recreate the recovery partition in single user mode?

I was building a Franken MacBook Pro ~2012 from some old computer parts I had lying around. It is an old body that had HD issues, an HD from a MAC that was won't turn on due to a bad power button ...
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25 views

High Sierra and Bootcamp - issue after WIndows 10 partition size change

Recently i have installed High Sierra and Windows 10. I have 250gb SSD drive that i found is badly sliced (too much space for win10). So i've used EaseUS Partition Master to reduce windows partition. ...
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30 views

Missing partition won't let me boot, resize or modify it

Hi setting up an iMac I have salvaged, initially when I was erasing the partitions the iMac process dropped out and has left me in a right pickle. Initially it was a fusion drive with Mac OS, ...
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How to Get Expanded Synology Raid to be Recognized in Mac OS?

I recently purchased a DS517 to expand my DS1817+ Raid. I went through all the steps on the Synology side to increase the volume size. However, my Mac OS computer is still showing the old size of 53.7 ...
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need help I screwed my macbook so bad thiere is one drive and no partitions, please read below [duplicate]

So...I somehow messed up my macbook Pro model 1502 raetina 13" Late 2013, core i5, 4GB. I wanted to clean install High Sierra. Long story short I now have a macbook with one, yes one, there is no ...
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How to repair partition on external Thunderbolt drive that also contains boot partition?

2011 iMac running Sierra (NOT High Sierra) My system has its stock internal drive which I use for general file storage, and a couple of external physical drives, connected via Thunderbolt. One of ...
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29 views

How to properly remove a Linux partition without messing up your drive?

I know this seems like an beginner / dumb question, since an obvious answer would be: Open Disk Utility Remove Linux partition However it seems that it might not be that easy, and that following ...
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Fixing failed Bootcamp partition using Diskutils

I tried to create a bootcamp partition using the Bootcamp assistant, however when it should have booted into Windows to continue the installation, it failed and ended up taking the majority (>40GB) ...
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Add space to main partition

I have the following situation: -main Mac partition on Container disk 118 GB -Data partition total 369 GB (DADRA_2) -empty partition created when I was trying to resize things 20GB (untitled) I want ...
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Can't mount RAID 0, disks and RAID are online

I had a RAID0 configuration with Mojave in it, tried to update to 10.14.1 and the installation complained with a message about "bless" I installed a fresh MacOSX to an external usb and boot from it, ...
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1answer
27 views

Formatted an NTFS partition to Mac extended Journaled by mistake

I was creating a bootable Mojave usb for a friend on my Mac and by mistake instead of formatting the USB drive I formatted an NTFS partition on an internal disk to macOS Extended (Journaled). The ...
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45 views

Hard to mount APFS Volume with FileVault

I have lost access to my external USB disk, whose original content was a single partition with APFS and FileVault. DiskUtility finds the volume, but refuses to mount it. I'm running macOS 10.13.6. I ...
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OS X disk space recovery after corrupted Bootcamp uninstall

So, I've spent many hours trying to work an issue out with missing disk space after "uninstalling" Bootcamp on my c. 2014 500GB Macbook Air. I've consulted many of the posts on SE, some of which ...
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31 views

Hard-Drive Storage size issues after partition Disk Utility

I wanted to create a partition on my iMac for Windows to be able to play Windows games. I have used Disk Utility to create a 20GB partition on my 1,12TB Fusion drive. This caused a problem on my ...
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“Couldn't modify partition map” and “MediaKit reports no such partition” when attempting to format partition

I'm trying to create a storage partition on my bootable Linux flash drive (see my other question on Super User). I formatted my provisional partition FAT32 using GParted. The Mac saw it just fine, ...
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ExFAT does not support resizing - how can I partition it in order to use TimeMachine backup?

I have a 4TB external drive formatted as ExFAT file system with single partition, and I've already stored approximately about 800GB of files on it, and I decided to create a partition on this drive to ...
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22 views

Help Deleting Partitions on Fusion Drive

I was installing Bootcamp and it failed after creating the partition for it. Now I cant get rid of the partition. I've copied my entire drive to a bootable external drive and that is what I'm working ...
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20 views

How to rebuild Raid 0 Directory Via Terminal

I will start by saying that I am not terminal savvy! So please have patience. I have 2 4TB 2.5 Seagate drives that were removed from casing and installed in a Startech 2.5 Dual Raid enclosure. I ...
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15 views

Missing space after deleting bootcamp partition

My mac storage has decreased to just 75gb after I deleted Bootcamp. I need to recover this space (45.7gb) and return the computer to the rightful 120gb any help would be much appreciated.
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How to rebuild a GUID partition table in a APFS file system SSD?

I looked at other answers for similar questions but not one works for me (maybe because the APFS). I have an external 1 TB SSD with two APFS volumes. Somebody plug my hard drive into a Windows 10 PC ...
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I can not resize a partition

I have this partitions : And when I try to resize recovery HD to 1gb : It creates a new partition : in other words, I can't resize Macintosh HD
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42 views

I can't undo a partition on my macbook

I want to "delete" disk0s4, but it isn't appearing in the Disk Utility app. This is from a failed attempt to install Ubuntu, how can I delete this partition? Here is the diskutil list output: /dev/...
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59 views

I can no longer boot into macOS after resizing my bootcamp partition in EaseUS

I tried to enlarge the bootcamp windows 10 partition by 17gb. I went to disk utility on my mac, resized the mac's partition to smaller leaving 17-18gb of free space, then booted up the windows in ...
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47 views

Recovering GPT from a failed Mojave upgrade

Background: My partner decided to upgrade her work iMac to Mojave. Apparently, towards the end of the process, it hung on a black screen, said an error had occurred and would try to recover. It cycled ...
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1answer
30 views

OS will not mount the VM partition. Virtual memory must be forced to work

Virtual memory was broken on my Mac (cMP 5.1) for several months, with Sierra, High Sierra, and Mojave. Apple support was useless. I finally figured out that I was missing all the invisible ...
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1answer
107 views

APFS partition inaccessible, container missing

I'm running macOS Mojave on a late-2015 4k 21.5" iMac. I have lost access to my internal hard drive, but I can use my iMac by running macOS from an external drive or through recovery mode. When I ...
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1answer
50 views

macOS not allowing me to restore media files from one external drive to another

I am trying to restore media from an external drive to another external drive now both the partitions have been formatted with the same partition map GUID partition map (I am also getting an APFS ...
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35 views

Repair Drive with Broken Partition Map

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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68 views

Boot Partition suddenly inaccessible

I've run into quite a problem - my Mac (mid 2015 21.5" 4k iMac, running Mojave) cant find my boot partition (disk0s2). I've made some headway, it previously just showed it as FFFFFFFF-FFFF-FFFF-FFFF-...
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1answer
32 views

How do I prevent an internal partition from mounting at boot

I have a HFS partition on my internal boot disk on a Mac Mini (High Sierra) that I would like to not automatically mount at boot time. Rather, I want to reserve it to raw-mount to a VirtualBox VM by ...
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511 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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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 to convert external drive from Apple Partition (APM) to GPT without formatting or erasing its contents

The title is self-explanatory. My Google-Search-Fu only returns results where the conversion undergoes a destructive process. Backing up the contents and subsequently restoring them solves the problem ...
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161 views

Unable to resize main HD after deleting Bootcamp Partition

[Note:This question is dissimilar to the other ones like this since my Bootcamp partition does not show up on listing the drives in terminal.] I added my bootcamp partition to parrallels desktop. I ...
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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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36 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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86 views

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
67 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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1answer
55 views

Installed refind to a separate HFS+ partition alongside macOS 10.14, but can't set it as the startup disk

I use refind as my boot manager on my 2015 MacBook Air. Originally I had it installed on to my internal drive's EFI partition (and installed it in the recovery environment) but every time I update ...
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1answer
171 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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1answer
26 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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1answer
510 views

Upgrade from High Sierra to Mojave corrupted my partition table, unusable MBP

It's a long post, but I am listing everything I have done so far. I performed an upgrade to Mojave (day one release from App store), the app installed and I ran through the setup steps, I left it ...
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1answer
50 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
129 views

Failed attempt to fix macOS partition startup volume set to FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I attempted to fix an issue I encountered yesterday my MacBook Pro (13-inch, Mid 2012) following instructions in the top answer of this thread. I'm afraid I may have inadvertently destroyed my data by ...
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1answer
31 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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0answers
22 views

Converted from a basic disk to a dynamic drive in Boot Camp

I got a MacBook Pro and installed Windows 10 using Boot Camp and all was fine. I then needed to create a 50GB NTFS partition, when Windows prompted me to convert to a dynamic disk, I mistakenly hit ...
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2answers
698 views

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. ...