Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

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How to debug slow harddrive read/write speed on Mac?

I have been using multiple units of WD 5TB external hard drive with my macOS 10.13.6 on a 2018 MacBook Pro 15-inch. I realised that it is almost always the case that read/write speeds drop when the ...
forgodsakehold's user avatar
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External HDD killing MacBook Air, causing kernel panic attack, then unstoppable shut down mounting HFS+ from a partition on the drive

External portable HDD connected to iPad Pro M1 is only displaying 2 of 4 partitions suddenly. When connected to MacBook Air 2015 (running most up to date OS as the model can - maybe Catalina…?), the ...
user192056's user avatar
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How do I remove Ubuntu from my MacBook?

My MacBook has three OSs at the same time: macOS, Boot Camp Windows 10, and Ubuntu. It will display Windows, Macintosh HD, and EFI Boot (going to Ubuntu) when pressing the option when booting. I split ...
whaleboss's user avatar
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bootcamp NO BOOTABLE DEVICE after gpt add EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 disk0

My macbook has three os at the same time: macOS, bootcamp win10, ubuntu. When booting, I choose os through rEFInd. After I removed ubuntu, I found that only windows and efi boot were left when booting....
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How to install 2nd Windows 10 on a 3rd partition? - MacBook Pro 2019 16-inch i7 Laptop

Hardware: MacBook Pro Late 2019, 16-inch i7; 16 GB RAM, 512 GB SSD , AMD Radeon 5300M Current OS: Monterey 12.7.1, Windows 10 Build 1709 installed via Boot Camp Expected outcome: Triple Boot macOS, ...
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Unable to partition apfs on internal ssd. macOS high sierra

My internal SATA SSD is formatted as APFS and I am running High Sierra on it. I want to use open core patcher to install Big Sur on a separate APFS partition (I heard there were problems when having ...
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I can't partition my hard disk in disk utility

After I deleted Windows from my Intel iMac (OS X 10.6.8) using The Boot Camp Assistant, I tried to install Windows 7 again, but when I reach the part of partitioning, the iMac got stuck and stopped ...
Yassine Lounadi's user avatar
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macOS booting into Windows Recovery mode after deleting Bootcamp Windows partition

My Mac still boots into Windows recovery mode, automatically. I can still boot into macOS and everything works, however I want to remove this partition. When I first start my Mac it also shows up with ...
Apfel Tasche's user avatar
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Mac M1 Sonoma: Cannot read my 256Gb Micro SD card

I have a brand new 256Gb SanDisk Micro SD card and I'm not being able to read/use in my Mac through the internal SD Card reader slot (I don't have an external card reader to try this option). The card ...
Krueger31's user avatar
3 votes
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Unable to remove bootcamp partion

I was previously using windows on my Macbook pro 2015, on mac OSX 12.6, but now no longer need it. I'd like to remove the partition and revert my laptop to how it was previously when it had more ...
Gabe Yawitch's user avatar
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How do I get back space allocated to a disk image?

I recently used Disk Utility (on macOS 14.0) to create a new blank image, unmounted the image, deleted the .dmg associated with that image, and now can't figure out how to get my allocated storage ...
ne1's user avatar
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MacBook mid 2012 MacOS Catalina GPT configuration messed up

I had Tripple Boot configured on my MacBook Pro mid 2012 sharing the same 240GB Sata SSD drive in the following order: APFS MacOS Boot Camp Windows Linux POP OS EFI partition or something. I used ...
faissalman's user avatar
-2 votes
2 answers
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On Intel era iMac can an Apple update to Mac OS break Boot Camp partiton? [closed]

Our scenario is we have Intel iMacs that were all configured to have Boot Camp/Windows partition. Those that have basically never booted into Boot Camp are fully updated to latest Apple security and ...
SKidd's user avatar
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Using utilities how can I format a GPT disk without an EFI

I have 8 disks in a RAID. They are 4TB each so can not be formatted with MBR or APM. The EFI takes up 200MB on each of the 8 disks so 1600 MB for no purpose is wasted. I have tried using diskutil ...
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Resize first partition on MacBook Pro M2, having two partitions with each MacOSX installed

I'm having a MacBook Pro with M2 chip from the company I work for. It is allowed to use the device with a separate OS installed on it. That's why I currently have two partitions, each with another ...
XmasImperator's user avatar
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Cloning a Windows 11 MacBook Pro Boot Camp partition

I recently got a new Lenovo dedicated gaming laptop and am wondering how to go about cloning, if possible, a Boot Camp Windows 11 partition. I have many files and games from my childhood I cannot find ...
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Recover files from mac in recovery mode - apfs missing

I'm trying to recover files from my mom's mac that is not working. It's a MacBook Pro (Retina, 13-inch, Early 2015). Trying to boot it up results in the folder with a question mark. Trying to boot ...
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How to recover "free space" on a Late 2013 iMac Fusion Drive after failed Boot Camp Windows installation? [duplicate]

In my fleet of older Macs, I have a Late 2013 27" iMac fitted with a 3 TB Fusion Drive running macOS 10.15.7 Catalina. I was using Boot Camp to install Windows 10 Pro, when the Windows installer ...
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Merging free space back with main partition [duplicate]

I created a partition for Linux that I do not need anymore. I deleted that partition and now am left with this free space. Am I able to merge this back into my main storage? diskutil list disk0 /dev/...
James Miller's user avatar
2 votes
2 answers
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USB Flash drive not mounting (shows up in diskutil)

My 16 GB USB flash drive works perfectly on Windows and Ubuntu OS. On plugging into my Macbook Pro, I don't see it fully mounted. On running $ diskutil list I see the following output /dev/disk5 (...
celestejasmine's user avatar
1 vote
1 answer
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System Crashes, SSD Boot Partition Not Found after Power Surge

Hi all—I've read this community for a long time, and am now hoping you can help me more directly. I was using my 2012 MacBook Pro last night when the power in my home went out and came back. The ...
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Repartitioned 1TB APFS SSD to MSDOS 120GB for Linux. Linux installer sees wrong slice names, though cfdisk reports correctly

model: macbook pro (2016) 3.5G Intel 1TB SSD Ventura 13.5 Attempt 1) Resized a 120GB partition for Ubuntu. Big mistake, lost all data. Attempt 2) Reinstalled Ventura 13.5, partitioned 120GB for EXT4 ...
queryman2000's user avatar
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When I try 'sudo gpt -r show disk0' I get: 'gpt show: unable to open device 'disk0': Operation not permitted'. How could be this overcome?

Trying to replicate the gpt option on this post How to examine disks and their partitions via terminal? I do: sudo gpt -r show disk0 what I get is: gpt show: unable to open device 'disk0': Operation ...
nostromo's user avatar
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How can I do a GPT (Guid Partition Table) sector raw backup with `dd` like in a UNIX/Linux-MBR fashion?

I want to "raw copy" with dd the critical GPT (~ Guid Partition Scheme) bytes of my computer's main hard drive, to an arbitrary file. I tried to do the equivalent MBR/Unix/Linux in my Mac (...
nostromo's user avatar
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Trouble Deleting Partition from disk utility after uninstalling Asahi Linux in Macbook

I am using a Macbook M1 2020. I followed the steps given in the following video. https://www.youtube.com/watch?v=nMnWTq2H-N0&t=146s At time stamp 2:05, Mr. Macintosh gives the command given below. ...
Dean's user avatar
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External drive with Time Machine not visible

mac os monterey 12.5.1 My external drive 2to is split into two partition of 1to One called backup001: it is formated mac os, and it uses for timemachine for a long time. it works ok. Another ...
polax's user avatar
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Accidentally Disassemble AppleRAID RAID0

I accidentally disassembled a RAID1 via Disk Utility. The two disks were originally formatted to APFS. The Apple official website claimed the data recorded on the disks is not deleted. However, after ...
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How to recover an erased external drive partition?

I have a 2009 iMac running Ventura 13.4. I was messing with a USB key and accidentally erased my 3TB external media drive using Disk Utility. I originally used Disk Utility to create a single large ...
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Determine if Macbook Pro hard drive is damaged or repairable

I have a 2019 16" MacBook Pro with 512GB drive which I would like to reformat and dual boot with Ubuntu. (I'm ok with a stable MacOS or Ubuntu single-boot too). There is no data on it that needs ...
Steve Bennett's user avatar
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I have lost the Logical Volume name on a disk partition and am trying to recover/rebuild it

I have a 2009 MacBook Pro that has 2 internal fusion drives and an external LaCie USB drive and can (normally) boot into 4 iterations of Mac OS: Snow Leopard, Mavericks, El Capitan, and Catalina. This ...
munedawg's user avatar
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This volume has 75.8 MB used space. You can’t remove this volume, because the preceding volume cannot be resized. This volume can’t be resized

I want to make a replacement parition for bootcamp purposes, any way to help?
Jerry Seinfelter's user avatar
1 vote
1 answer
341 views

New Macbook Pro is case-insensitive but Time Machine backup is case-sensitive

There are related questions here, but many are dated and none seems to quite cover my situation. I have an early 2015 MacBook Pro that has been kept as up to date as possible, currently running 12.6.7....
Bryan Hanson's user avatar
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"Not Enough Space" when trying to use bootcamp assistant - BUT I DO HAVE ENOUGH SPACE [duplicate]

I'm trying to partition my hard drive using boot camp assistant. I'm using a 32gb flashdrive, and I have a bit more than 180gb free on mac hard drive. I'm using Sierra 10.12.6. I'm not very computer ...
Lindon125's user avatar
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MacBook Pro Recovery Mode Broken [duplicate]

A few weeks ago I installed Linux Fedora on my MacBook Pro (Late 2011) and wanted to switch back to macOS now, but I have experienced a lot of problems. Latest Internet Recovery: For some reason, I ...
N0nq's user avatar
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1 vote
1 answer
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Interrupted a `diskutil resizeContainer diskX 0` attempt to recover unpartitioned space - ended up with a startup snapshot and a Data volume

After I got done test driving Asahi Linux on my M1 Max, I decided to remove it and recover the allocated space, 500 GB (out of a total 2TB). I uninstalled Asahi Linux from my Mac using the commands ...
noon-ng's user avatar
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Cannot erase, partition or reinstall - exit code 0 / exit code8

After erasing the main volume to prep my MBP i7 for a transfer of ownership I started reinstalling macOS from recovery mode, but the wifi went down during download and I had to restart my mac as the ...
Stf_F's user avatar
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Fusion Drive is split and not available for repartitioning

I'm using an iMac 5k Retina 2014 (old, I know) with OSX Yosemite installed. For some reason Bootcamp has never worked with my USB drives, so I tried manually installing Windows 10. I partitioned the ...
rantey's user avatar
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1 vote
2 answers
515 views

gpt operation not permitted in Ventura

Trying to run the gpt command with anything other than show returns an 'operation not permitted' error, regardless of using sudo, running in a root shell, making sure disk is unmounted, and even ...
Apoorv Chauhan's user avatar
1 vote
1 answer
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How do I partition an external drive on macOS 13.2.1? [duplicate]

I have an external drive and I am running macOS 13.2.1. I'd like to partition the external drive into two partitions and use one of those for a Time Machine backup. In Disk Utility, it has the +|- ...
irritable_phd_syndrome's user avatar
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I tried to uninstall Asahi Linux by removing the partition but now it just says (free space)

I had tried to install Asahi Linux but I got into an endless boot loop. To fix it I tried removing the partition which the script had created. I tried to refer to a few blogs but for some reason ...
Aarav Dayal's user avatar
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0 answers
108 views

How to completely remove unwanted Ubuntu dual boot partition?

I previously had a dual boot (Linux and macOS) setup. I added UBUNTU and SWAP partitions to the existing macOS partition. I no longer need Linux so I deleted the UBUNTU partition but I still see the ...
spuggy's user avatar
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1 answer
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How to reclaim disk space of merged HFS+ partition?

On an external USB disk formatted with HFS+, I had merged a 800GB partition with a 2TB one. Now, although disk utility shows the merged partition as 2.8TB, the Finder only reports 2TB of space: The ...
diemo's user avatar
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External APFS SSD partition stops mounting after a while mount even after erasing/reformatting

I have been trying to use an APFS partitioned Samsung T7 shield 2 TB for a couple of weeks now but keep running into the same issue. After a few days of use, one of my partitions will no longer mount. ...
Mushll's user avatar
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Installing Windows 7 through Bootcamp for Mid-2011 iMac - How to Delete Hidden Partitions

So I was hoping to install Windows 7 onto my computer. It's an old Mid-2011 iMac that I wanted to use for gaming and other programs. The problem however was that after deleting a second partition, it ...
Mr. Cow's user avatar
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Is it okay to just throw away the disk image in the trash instead of using Disk Utility to remove it?

I'm having trouble removing disk images. For reference, my Mac is an Apple Silicon. I made a disk image using Disk Utility to create a secure folder, but I want to completely erase the image so that ...
Heart Lion's user avatar
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1 answer
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Can I delete macOS Partition from Boot Camp and then load a new macOS?

On my Mac, I can only access Boot Camp and not macOS. It keeps on restarting, when I’m trying to access macOS. I can’t also load Recovery, Internet Recovery and it fails to boot from from USB. It ...
Mathunya's user avatar
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diskutil list does not show (free space)

I had an issue with a partition that refused to be deleted. The drive is a 500 GB Samsung SSD with (previously) 2 partitions: Macintosh HD (apfs volume with macOS Catalina) -- 250 GB (disk0s1) ...
TKFD's user avatar
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1 vote
1 answer
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Time Machine backups of Multiple Macs to external drive with APFS: Should I use separate containers, or one container with different volumes?

On an external drive, I have 3 APFS containers each with 1 volume in them respectively. The 3 containers and their respective volumes are used for Time Machine backups from 3 different Macs. The APFS ...
P A N's user avatar
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4 votes
0 answers
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Can APFS containers be resized while retaining their contents? (Case-sensitive, encrypted)

Can APFS (Case-sensitive, encrypted) containers be resized while retaining their contents (e.g. not having to reformat them) in MacOS? I have an external hard drive with 3 different Time Machine ...
P A N's user avatar
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2 votes
1 answer
312 views

How can i give the "free space" on my internal ssd to the APFS container, where macos is installed? [duplicate]

I had Ubuntu installed in dual boot on my macbook pro 2018 with macOS Ventura 13.2.1 . Now I deleted the partition on which Linux was located and saw in Disk Utility that I don't have all of my SSD ...
Consti's user avatar
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