Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

337 questions with no upvoted or accepted answers
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Can't mount encrypted HFS volume

I have an external hard drive that is partitioned as a single encrypted HFS+ volume. Here's what's going on: The volume won't mount, Disk Utility won't repair it. diskutil cs list says: However: ...
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1k views

Time Machine and case-sensitive HFS

Time Machine defaults to formatting a new drive to Journaled HFS+ (case-sensitive), if you set up the drive from within Time Machine itself. However, my main drive (the one Time Machine will be ...
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760 views

Macintosh HD is locked - Unlocking with Disk utility First Aid taking 12+ hours and still not completed

I have a problem with a new re-installation of Catalina. I am getting the following: "Macintosh HD" is locked" Pop-up message on every start up. After going into disk utility I have the following: ...
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2k views

Whats wrong if 'Invalid BS_jmpBoot in boot block: 000000'

I have a corrupted partition and upon trying to repair it with disk utility it gives the error Invalid BS_jmpBoot in boot block: 000000 Several postings on the internet describe this problem related ...
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68 views

Disk wont show up for Mac OS install

I received a Mac from a friend. When I tried booting, the Mac displayed a blinking folder with a question mark. So, I restarted the Mac with the option key pressed which booted to internet recovery. ...
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142 views

Can't erase hard drive or install new OS onto 2007 iMac

I've tried most things i've read online to try to fix this issues to no avail but I'll explain exactly what's happening. I think I accidentally deleted the EFI partition from my Mac which is the ...
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452 views

Dual boot bootloader problems - Mac & Linux

I recently stumbled upon a problem with default MacOS bootloader. The scenario is next: My Macbook pro 2012 only has one 256 GB drive from where I specified 70 GB's of space to be used as Ext4 ...
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70 views

Accidentally overwrote encrypted external drive (Mac OS)

So I was rushed (and being careless) and accidentally copied about 80 MB of a Raspberry PI image (SD card formatted extfs) over my external USB drive (4TB) that was formatted and encrypted (using Disk ...
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317 views

lost Mac OS X partition after resizing bootcamp

Recently I tried to resize my bootcamp partition. I first resized the Mac osx partition to a smaller one with diskutility and appended this space to the bootcamp partition from within windows 10 (with ...
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546 views

FileVault 2 Boot camp Partition

I have seen several different answers to this question and so I am a bit confused. If I enable Filevault 2 upon setup of my 2016 Macbook pro and THEN create a windows partition for boot camp, is the ...
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38 views

Grey unusable area in Boot Camp partition on OS X Mavericks

I have a 500 GB MacBook Pro 2014 with Boot Camp installed (OS X Mavericks and Windows 7) with both OS's booting correctly. I need more space in Windows, so I want to resize the Mac partition to ...
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411 views

After trying to install Kali Linux I can't access macOS anymore

I've tried to install Kali Linux as dual boot with macOS. I've partitioned 20 GB on the side from 250 GB for that purpose but the installation didn't go as planned. So I decided to reboot macOS and ...
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173 views

Recovering Corrupted Partition Table on Time Machine HD

I had a loss of power while I was restoring some data from a Time Machine backup. When I brought the computer back up, my 4TB drive was unusable, with OS X prompting me with a dialog that stated 'The ...
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1k views

BootCamp: error occurred while partitioning disk. Disk Utility's First Aid says volume is OK

I'm trying to set up a Win10 partition on my late 2013 rMBP through Boot Camp Assistant, however I'm getting stuck on partitioning: Then after heading to Disk Utility, I try using the First Aid ...
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2k views

macOS Sierra won't install and complains on the disk

After downloading and running the installer, I met with the problem when the installer is asking "Select the disk where you want to install macOS". My default OS X disk which runs El Capitan normally ...
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56 views

OS X El Capitan renames Windows volume on every boot by appending increasing numbers to the volume name

I have installed Windows on a separate hard drive on my MacBook Pro running OS X El Capitan. OS X is running on an SSD and Windows is on another physical hard drive. I named the other hard drive ...
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1k views

Is it safe to convert Core Storage partition to HFS+?

I just got my new Macbook Pro, I tried to make two new partitions using Disk Utility but I could only create one. After googling I found out that I can't create more than one additional partition in ...
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1k views

How do I write-protect a partition of a USB drive on OSX that can work cross-platform?

I bought a bunch of USB sticks that I want to give as a gift to friends and clients, with some files on them. I'd like to have the files non-erasable (though I realise they can format the drive, I ...
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17 views

Should I create APFS volumes or a partition on an external disk?

I have just newly bought an external drive (not SSD), and was planning to create several partitions on it, for example to keep my files separate from Time Machine backups. However, when browsing ...
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20 views

Boot Camp Assistance is stuck on create a partition? Catalina 10.15.3

I am having a similar issue to the following thread: Boot Camp Assistance is stuck on create a partition? Except as shown below I'm stuck on 45% and there are some error messages I do not ...
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18 views

Core Storage partition UUID set to all f's, issues fixing it

I've been working on a duel boot mac os and Kali setup for my macbook pro and recently made a little mistake. I had originally divided the core partition one for Macintosh HD and one for my Kali OS, ...
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186 views

How to move my files to iCloud drive without using my local disk space?

I have a Mac running Mojave and got into a situation where I don't know how to solve: My 512Gb SSD disk is divided into 2 partitions (200Gb and 300Gb each): The first partition is where the OS ...
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71 views

Diskutil how to merge unaccessible partition

I have my main partition, disk0s2, which needs to be enlarged because I am out of memory. My SSD is of 480 GB capacity and is split in many partitions. The ones that I try to merge to the main one (...
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56 views

Only see 70gb of space even though I have 250 gb hard disk Macbook air

recently I messed around with my disk utility I am not sure what I did, but after doing whatever it is that I did I am only seeing 69.14 gb of space out of 250gb. Here is the image I tried to go into ...
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58 views

Moving hard drive to another laptop. (similar model)

I am trying to take the hard drive from a Macbook Pro 13-inch Mid 2012 (Model Identifier: MacBookPro9,2) and put this hard drive into a Macbook Pro 13-inch Early 2011 (Model Identifier: MacBookPro8,1)....
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227 views

Why do I have 2 drives with the same used space?

this is a weird one. I just bought a 2nd hand macbook retina and turns out that when I re-installed macOS, the storage dialog showed up a 2nd drive. The very first thought was that the main drive is a ...
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140 views

Fixing “The startup disk cannot be partitioned or restored to a single partition” error on a fresh Mac OS installation

I've been working on this problem for over 10 hours. First of all, I installed Mojave using the Mojave patcher on an older MacBook (The model number is A1278. It's a 2011 Macbook Pro) I completely ...
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38 views

The startup disk cannot be partitioned or restored to a single partition. Windows 10 and Sierra

Getting is error trying to remove my Win 10 Partition. "disktutil list" shows the following. Any ideas? /dev/disk0 (internal, physical): #: TYPE NAME ...
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732 views

MediaKit reports bad partition or no map found (-5324)

I am trying to recover an external drive (Western Digital, MyPassport, 4TB, WDBYFT0040BBK-0A) formatted in HFS+. /dev/disk0 (internal, physical): #: TYPE NAME ...
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706 views

Bootcamp - can't save Windows support software, not enough space on available disk

So I keep getting the above error at the following step, Downloading windows support software - OK Partitioning disk - OK Copying windows files - OK Saving windows support software - ERROR I have ...
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244 views

Lost the Option to Boot into macOS After Quitting Internet Recovery (Bootcamp)

Background story: I have a MacBook Pro ("Core i7" 2.6 15" Touch/Mid-2018 2.6 GHz Core i7 (I7-8850H)) with Windows 10 installed using bootcamp. I am not sure about the macOS version, but it must be ...
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How to fix misnamed filesystem in GPT?

I restructured my drive in Windows messing up my partition table as the software I used did not recognize apfs. In Mac recovery mode disk0s2 is recognised as a Linux Filesystem. It won't let me run ...
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2k 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 ...
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0answers
926 views

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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0answers
2k views

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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0answers
118 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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0answers
121 views

Option to boot into Windows missing after Boot Camp Assist

I just completed installing Windows using Bootcamp Assist. I allocated 30 GB to the Windows partition. The process completed after taking a long time (> 7 hours), and a Bootcamp partition has been ...
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0answers
1k views

Bootcamp stuck at partitioning disk, lost half my disk space

recently I attempted to install windows on a macbook air 13’ mid 2014 256GB using boot camp. It was going well until it got stuck at the partitioning disk step, the blue loading bar was full and my ...
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0answers
33 views

Can't reboot from external HD after partitioning

I was able to boot from my external HD formatted in Mac OS Extended until I partitioned it with Disk Utility. According to Disk Utility the Mac partition is still bootable but the drive no longer ...
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0answers
1k views

Mounting a single partition dd image in macOS?

Using testdisk, I have made what is apparently a dd image of a single HFS+ partition (what was originially /dev/disk1s2, I think). Now I try to mount this image file, but seemingly I cannot - even if ...
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0answers
191 views

Recovering SSD after Ubuntu live USB corrupted partition table?

I'm running a mid-2012 MBP with a WD green SSD inside. I needed to install Ubuntu for university so I tried to do so via a live USB. While doing the installation I accidentally clicked on the option ...
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68 views

Creating a Windows installation media using a partitioned hard drive

I have a 1TB external hard drive that I have partitioned 10GB of (WINBOOT). I want to use that 10GB portion as installation media for Windows 10 with Boot Camp Assistant. However, when I go to make ...
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0answers
1k views

How to access a fusion drive from ubuntu linux by mounting apple core storage

my iMac with 3TB fusion drive won't boot anymore. even when booting to recovery it crashes with kernel panic. the stack trace says com.apple.driver.Corestorage dependency com.apple.iokit....
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268 views

Bootcamp assistant hides partitions to windows?

macBook pro mid 2014, High Sierra, Windows 10, Ubuntu I used Bootcamp assistant to resize one unique partition to make space for Windows NTFS partition, then I used Windows disk manager to resize ...
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0answers
155 views

Boot Camp Windows installation interrupted by an error. Disk divided into 2 different containers. I am unable to combine them

My disk was only 1 part. I tried to install Windows using Boot Camp. I followed the steps mentioned on the official Apple website, but I got an error message while installation. When I checked my ...
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0answers
93 views

Lost space on hard disk after partitioning

I have a iMac 27" Late 2013 with 3TB Fusion Drive running macOS High Sierra 10.13.3. I want to install Windows 10 through Bootcamp but it always hangs on partitioning the hard disk after I choosing ...
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0answers
46 views

Format a partition to NT and lose access to partition

I have a 2 TB external drive. It contains two volumes (disk2s1 & disk2s2): ~ diskutil list /dev/disk0 (internal, physical): #: TYPE NAME SIZE ...
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0answers
29 views

Mount partitions/images with Linux filesystems

I've created a local image of the drive of a hosted VPS by using dd over ssh (ssh user@123.45.67.89 "dd if=/dev/vda " | dd of=/Volumes/Backup/droplet.img). mount shows that macOS supports afs, hfs, ...
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0answers
109 views

dual boot window 7

I'm trying to use boot camp to dual boot windows 7 with mac. but i get this error "An error occurred while partitioning the disk. Please run Disk Utility to check and fix the error." I run disk ...
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0answers
153 views

My question is about recreating Corestorage partitions - formatted Fusion drive

I have an iMac 27" with a Fusion Disk (SSD 121 GB, HDD 1 TB) and Mac OS X 10.7 (Lion) installed. The HDD failed and the Fusion Drive is lost (Lions recovery diskutil: disk missing - fix/ignore) ...

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