Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

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OS not starting up, prohibitory symbol

I have a Mid-2012 MacBook Pro with Boot Camp, and it supports only up to macOS Catalina, and not Big Sur. This frustrated me and I decided to go off the rules a bit & installed macOS Big Sur (...
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Bootcamp Assistant giving errors and so is Disk Utility. Mac isn't allowing me to install Windows like I have before!

I have scoured the internet for a solution to finally be able to use Bootcamp but nothing at all has worked. I previously used BCA to install Windows 10 on my computer but after about a year or so, my ...
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Reviving unmountable & unformattable usb drive

I have a USB drive, which was a bootable Windows drive, which I seldom used. Recently I tried to format it, and it went corrupted (I hope). I'd like to find out if it's broken or not. I'd tried to ...
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What is this extra partition that has appeared suddenly in macOS and how to delete it?

macOS BigSur 11.2.3 (20D91) / MacBook Pro (15-inch, 2018) has suddenly generated a new 22GB partition. I noticed this yesterday when 22GB suddenly disappeared and I started to receive low disk space ...
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Can't restore Mac from Timemachine on external drive

I am doing time machine of my 2 macbooks on one external drive. That drive has 2TB capacity and I have split it to 500GB for my 13 mac and 1.5TB for my 16 mac. 16x - partition for my 16 inch macbook ...
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Partitioning a List using a List [migrated]

I'm working on a project which requires me to partition a list using a list. I've created a solution which works in some situations, but not every situation. Is anyone able to help me with the logic? ...
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Resizing “VM” APFS volume on osx

I'm trying to free up space but 150gb is taken by "other volumes". diskutil list shows that "VM" volume is taking 150gb. How can I resize it to be smaller? $ diskutil list /dev/...
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Cannot boot into macOS

A while ago, I installed Ubuntu along with the macOS on my MacBook. Yesterday, I decided I should uninstall Ubuntu. I read a post on how to uninstall Ubuntu. What I did was, in Disk Utility on macOS I ...
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1answer
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recover data from FFFFF partition inside an external drive

A few weeks ago, I deleted my Linux partition of my Mac because I was running out of space. After that, I couldn't boot my OS anymore. Because I depend on my computer to work, I decided to backup my ...
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Cannot boot into Windows 10 bootcamp

Something got borked recently on my MBP and now Windows 10 is unbootable - here are the details. MacBook Pro 2019, macOS 11.2.3, Windows 10 Pro x64 20H2. I can see all files on the Bootcamp partition ...
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Create macOS High Sierra and newer bootable recovery partition on a separate standalone disk

There are manuals on cloning the recovery partitions to a separate disk for any macOS or OS X version prior to High Sierra, but I can google nothing about creating a standalone recovery disk for High ...
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How to reclaim deleted MacOS partition or Container

So a little of background and I have doing research many page but have not found the solution yet. I tried out Boot Camp Assistant to install Windows 10 on my MacBook. Then I accidentally deleted the ...
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Help I screwed up APFS Mojave partition FFFFFF error [duplicate]

Apologies for the photo but I couldn't copy/paste because my mac is in recovery mode Basically what I did was have Windows and Debian installed alongside encrypted OSX but this morning I was ...
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Cannot boot macOS after installing Ubuntu on dual-boot Boot Camp Windows

While installing Ubuntu on my MacBook Pro 2015, which already has Windows and macOS installed, I made a huge mistake by selecting the "install alongside Windows" option. As a result, I can ...
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How do I use MacOS Terminal or other app to format an MBR FAT32 SD card as a 0x0C partition, rather that 0x0B?

Apple's Disk Utility app can format an SD card as MBR FAT32; but in the Terminal, I confirmed the SD card's partition is in fact 0x0B: > sudo gpt show /dev/disk3 start size index contents ...
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Cannot recover space after deleting Windows partition in bootcamp

First I used Disk Utility to create a 100GB partition for sharing data between OSes, I then used Bootcamp Assistant to create a Windows partition to install Windows. Later, when I removed the Windows ...
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1answer
52 views

Missing 300GB harddisk, how to recover it?

I had a bootcamp partion which I removed, how can I recover the 300 GB disk space it used? diskutil list /dev/disk0 (internal, physical): #: TYPE NAME SIZE ...
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What is the default partition type (case sensitive or insensitive) in Macbook pro 2020 (BigSur)?

I have two questions which I can not find an answer by googling: What is the default or recommended partition type for the latest MacOS (Big Sur)? APFS case sensitive or case insensitive? What is ...
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Lost macOS boot option after using EaseUS partition to resize Windows partition

I am using a Macbook Air. After I installed Windows 10, I wanted to resize the Windows Partition and create a new partition to use data. After that, Windows informs me that a recovery error - cannot ...
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Fixing damaged partition map. Couldn’t modify partition map. (-69874)

I am trying to fix my external hard disk but when I use first aid from disk utility, it throws an error: My Mac was able to read this hard disk till yesterday before I tried to force mount it using ...
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1answer
39 views

USB drive (Fat32) stuck on read-only. Unable to erase or partition

I bought a SanDisk USB drive about a month ago. It's currently formatted as MS-DOS (Fat32), and it's stuck on read-only and I'm not sure how to fix it. (and there is no physical switch on the usb) In ...
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Mac not recognising Crucial P1 SSD in recovery mode

Recently, I've updated my 2015 Pro Retina 128Gb with 3rd party Crucial P1, M.2 - 500GB SSD. Installation went smoothly, however couple of months later I need to reset the Mac back to factory settings. ...
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1answer
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I erased Macintosh HD in disk utility, now I can't reinstall macOS Big Sur

So I wanted to reset my 2019 Macbook Pro, so I used CMD + R and went to disk utility and erased Macintosh HD... I then went to reinstall MacOS Big Sur and I got about halfway through the ...
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1answer
27 views

Bootcamp cannot be selected through option key after patitioning using recovery

I have installed windows 10 on my Macbook late 2009 unibody and thus far have worked well. I wanted to increase the capacity of my Bootcamp partition so I used recovery to reduce the size of Macos and ...
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1answer
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Error: -69519 when resizing partition of apfs container scheme

I am trying to resize the partition disk0s2 in my Mac. My diskutil list shows: /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: ...
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1answer
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Two independent Big Sur installations on the same device [duplicate]

Assume I have a MacBook Pro 2019 with Big Sur installed. My goal is to have two different partitions on the same physical SSD. I want to have two separate installations of Big Sur. My question is: How ...
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1answer
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Catalina partition turns into type FFFFFFF/unbootable and unmountable “disk0s2” after Mavericks install

I'm having a similar issue with this (MacOS partition formatted FFFFFFF etc after bootcamp install), but I got confused while reading the comments. I thought it would be a great idea to dualboot ...
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1answer
37 views

Disk Utility changing partition types on its own

Whenever I do an operation in Disk Utility the last day it seems that I end up with my APFS partitions set to an unknown partition type (FFFF...) This has happened three times now both after extending ...
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54 views

Ubuntu on Mac: Executing 'grub-install /dev/nvme0n1' failed

I know this is a super common issue, but if I am here it means I have already searched and tried many roads: unsuccessfully. I am trying to install Ubuntu on a MacBookPro 13" 2019, running MacOS ...
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bootcamp partition issues

I'm using a MacBookPro11,3 with MacOS Big Sur 11.2.1 I get an error message while trying to partition with bootcamp. It suggested me to run first aid but no problems were found. ”Your disk could not ...
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2016 13' MBP - No password accepted after a failed update. How could I possibly recover or get this data back?

FYI, I was at onetime a ACMT. So feel free to talk fast. I have MacBook Pro (13-inch, 2016) that appears to have failed an update due to not having enough space. (I'll never understand why the ...
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1answer
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Problems Reformatting SSD on mid 2015 Retina 15" MBP

When I purchased the subject laptop last year I replaced the original Apple SSD with a non-Apple 2 TB SSD. For years I have always kept OS and data on separate drives or at least separate partitions. ...
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Which partition do I need to format or fix in order to install Sierra or lion?

I have tried in vain to get my MacBook Air back up and running. I did a system restore or reinstall a while back and something broke. I've tried command+R and a bootable USB, there doesn’t appear to ...
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Issue with clean install of macOS on early 2015 MacBook Pro

I tried to install FreeBSD on my SSD on my mac since I was guessing they should be working, but there no drivers for macos and I decided that I should go back at Big Sur. I formatted the disk via the ...
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1answer
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How can I fix or back up a system after I use gparted to resize my drive and the system will not start?

I created an EFI to run Ubuntu on my mac it was working well but I didn't have enough space so I created a another partition in disk utility and then went to gparted and turned the new partition to un-...
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Two different Containers after factory reset? Macintosh HD & Macintosh HD Data?

I wanted to start from scratch so I followed the guide that Apple has on their site. After rebooting and logging back in I saw that I have two different containers. Macintosh HD and Macintosh HD Data. ...
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1answer
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GUID_partition_scheme not fully used after SSD clone

I cloned a 750Gb HDD to a 1Tb SSD. I can only access 750Gb on the SSD so 250Gb are wasted. How can I include (assimlate?) the remaining 250Gb so they're not wasted, or create an accessible partition (...
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67 views

Kali Linux bootable USB not showing up in boot menu

I am using a 2018 MBA running Big Sur I wanted to create a persistent bootable USB with Kali Linux and have followed the exact instructions as given in this article: https://medium.com/macoclock/...
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4answers
186 views

Safe to delete old “Macintosh HD - Data” partition?

I did a clean install of MacOs today, and when choosing where to install it chose "Macintosh HD". It now seems there is a new "Macintosh HD - Data" partition, where MacOS currently ...
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Missing HD partition in disk utility (after failed Ubuntu installation)

My first attempt at installing dual boot Ubuntu on an old MacBook Pro (mid 2010) was rather unsuccessful and I was trying to erase the Ubuntu partition (300 gb) before re installing. This somehow ...
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Recovering data from a micro SD card with missing partion after unsafe eject

I am currently stuck trying to recover data from an unsafely ejected 64GB micro SD card that was inside a smartphone. Windows's diskpart utility would not recognize the device at all, so I am trying ...
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Installing software on another partition

I'm looking for a way to install new software on my Mac without adding clutter to the system folder. For example, installing Android Studio or VirtualBox, even when removing it from the Mac, there is ...
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Fresh install Big Sur without deleting a partition

Can I create a partition and store files I want to keep there, then do a fresh install to upgrade to Big Sur, or will the fresh install delete all partitions?
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1answer
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Free Space after merging Partitons on Macintosh HD

I have a 256GB SSD El Capitan (the last iteration of it) on MacBook 12" late 2016 Model. Before I had it, someone made an aditional partition of 125GB which I've deleted using various methods ...
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1answer
54 views

Old iMac Hard Drive not readable as external

My friend's iMac would not boot. I ran TechTool Protogo using a thumb drive with TTP 9 to test the hard drive. It reported several hundred failed sectors on the drive, so I recommended we replace it....
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Does “gpt remove” command delete files along with partition? Trying to recover a Mac OS partition Vol Type FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I have a Macbook Pro with Big Sur on it, and I installed Linux Mint. I then resized the encrypted Mac OS APFS partition in order to grant Linux more space. After that I created another smaller Linux ...
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50 views

Partition disk after deleting the original partition

I have a MacbookPro 2017 running on macOS Big Sur version 11.2 and I installed Windows using Bootcamp without any errors on the first time but I was unaware of the space that was needed for this so I ...
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50 views

An unknown partition type in diskutil on Mac OS : FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF Partition: How to Save data

I am using MacAir - Big Sur 2015 with 256 Gb hard drive. Hard Drive was portioned in 3: 2x 100GB (Main and Sub) as APFS and 1X 50 GB as ExFat to install Ubuntu. Later on, I decided to do partitioning ...
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2answers
93 views

Is it possible to recover an erased Mac SSD partition?

I did the stupid thing of formating by accident the main SSD in my Macbook. I was using Windows through an external drive and hit the "Erase" button thinking it was another drive. So I lost ...
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Boot Camp error “Windows cannot locate the disk and partition specified in the unattended answer's file” [duplicate]

I have a 2019 MacBook Pro 16 inch running on macOS Big Sur 11.1. I am trying to install windows using Bootcamp. I get the following error: Windows cannot locate the disk and partition specified in the ...

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