Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

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How to use a 2 TB external hard drive containing existing data as TimeMachine backup storage without losing data already on it?

I have an 2 TB external hard drive. It is formatted as NTFS format, supported by ntfs-3g which is installed using Homebrew. There is already about 500 GB data existing on it that I need to keep. I now ...
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Tried to fix filesystem type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF and failed [duplicate]

Initially, I had dual-booted Ubuntu on my Mac. Several months later, I decided I no longer needed Ubuntu on my Mac so I decided to get rid of it. I attempted to this by using Disk Utility on macOS and ...
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Cant install bootcamp in MBR after internal SSD upgrade

I upgraded internal kSSD on my mac (MBP-2013) via Carbon Copy Cloner. OSX loads fine, but for some reason I cannot boot into Windows that I have installed on external USB in MBR mode. Prior to ...
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Partition Map Check failed because no slices were found - External Drive

I have a WD My Passport external drive which is giving me the runaround. Yesterday I unplugged it from a Windows PC I was using without 'safely removing' because there was no icon in the system tray ...
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How can the internal SSD be cloned onto an external 1 TB SSD (for swapping)?

I want to clone my internal 500 GB SSD onto a new 1 TB SSD which is going to replace the internal 500 GB SSD in my MBP. Currently the 500 GB SD is partitioned like the following: /dev/disk0 (...
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Mac partition shows as type FFFF-FFF… - partition doesn't show in boot menu

I have a Ubuntu 16.04 partition running on my Mac alongside the MAC OS. It started recently that I could only boot into a black screen in the Mac OS and now the partition in the boot menu has ...
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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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DiskUtil seems to have accidentally erased my external SSD while trying to add a partition. Help?

I'm running macOS Sierra and I have a 1TB external SSD that I've been using, which just had one big macOS file system partition. I wanted to add a second 80 GB partition to the drive so that I could ...
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1answer
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MacOS partition showing as “FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFF”

I tried to uninstall linux on my MBP 2014, accidentally corrupting my MacOS. Tried to fix it using this guide : Data Not Backed Up, Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF, did not work. ...
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How can I triple boot MacOS Catalina , Ubuntu 18.04, and Windows 10

I currently use the mid-2014 MacBook Pro. I have read the similar questions asked but as I don't have much technical knowledge I thought I should create a new question. Device History I had ...
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Part of Apple SSD not accessible after failed bootcamp attempt

A couple of months back I tried installing windows through bootcamp on my system. For reasons I couldn't understand back then (and can't remember now), it failed. And as a result the total accessible ...
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secureErase not working for 2nd drive

I'm trying to delete Purgeable Data on second drive. For 1st drive "Mac" I ran: diskutil secureErase freespace 0 /dev/disk1s1 And it worked But for 2nd one "Data" : diskutil secureErase freespace ...
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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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1answer
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Cannot resize APFS partition - “The new size must be different than the existing size”

I'm trying to use entire 1TB HD as 1 drive. Using the disk utility to resize the disk to 1TB I keep getting "The New size must be different than the existing size". I tried using the apple disk ...
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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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How can I recover my external drive's partition table?

I have an old WD MyBook Ext Drive and I couldn't access the greyed out sub-partition in DiskUtility. I was trying to fix it with various Terminal commands relating to GPT and somehow I managed to mess ...
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How to combine two partitons on an external hard drive

How do I combine two partitions on my external hard drive into one?
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1answer
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How can I get back to my Mac side?

Probably not the right/good title, I admit. Accidentally quit bootcamp while it was deleting Windows partition to make new one or while it was making new one after deleting previous partition. ...
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1answer
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Mojave: Unable to resize APFS container

On my macbook I had wanted to install Ubuntu so a while ago I had created a partition and installed it to half of my drive. I ended up not using the distro and wanted to reclaim the space. I tried ...
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1answer
63 views

Create firmware partition for macOS to be installed

Here is what I did. I removed my internal SSD from my MacBook and now I am using an external SSD (a Samsung SSD T5) with macOS on it. Currently I have Mac OS X 10.9.5 installed on it. I want to ...
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SSD has missing size

I tried installing windows with boot camp. it went wrong! it said it had an error, it stopped and restarted my mac. the problem is - I have a 128GB SSD. but now, it shows I only have 83GB instead. ...
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1answer
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Partition space with the command diskutil partitionDisk

Why if I run the commande below, I don't have 8G partition but 7,9? diskutil partitionDisk disk2 hfs+ 14 8G hfs+ 15 8G hfs+ 13 8G Started partitioning on disk2 Unmounting disk Creating the partition ...
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Why does “diskutil eraseVolume …” add an extra “Apple_Free” partition

My question is about why "diskutil eraseVolume" adds an extra partition to an APM partition table. A little history will help understand the situation better I think -- had a 240GB APM style disk on ...
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1answer
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Unable to Boot into Mac OS X after installing Ubuntu

First thing first, my MacBook Air partitioned into Ubuntu (30Gb) and OS X(91.2 Gb) was working fine until it started draining huge battery, lagging intensely and heating up. I figured out that this is ...
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How to reclaim space after removing bootcamp

I removed my bootcamp through "Boot Camp Assistant". Some how the 200 GB allocated for bootcamp didnt merged into Standard Macintosh HD drive. so i went for online solution and found following article ...
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How to only back up one partition of a Macbook hard drive?

I have a Macbook Air that has 2 partitions on the hard drive. One is for Yosemite (450GB) named "Macintosh HD" and the other already has Mojave (50GB) on it named "Macintosh HD 2". When upgrading the ...
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MBP will reboot after unlocking filevault partition

I'm running a MBP 2015 retina with 512GB SSD with macOS 10.14 and Windows10 with bootcamp. The macOS parition is encrypted with FileVault. Recently I cannot boot into macOS anylonger. Here is what ...
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How to Recover Sparsebundle With Missing File System

I'm trying to recover data from an encrypted sparsebundle on macOS Mojave (10.14.6) that I just discovered became corrupted at some point in the past. It was created several years ago. I have the ...
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There's missing space in my partitions on my Macbook 2016

My Macbook is usually 250gb, and I'm looking to increase the main container disk1 to as close as that as possible. There's like 37GB of unaccounted space. Where is it? I can't tell if its being used ...
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Airport Time Capsule internal HDD partition style and volume format

We are trying to recover an "empty" Time Capsule HDD mounted in an external housing. It shows as an MBR disk with no volume. I would have expected a GUID Partition Table (GPT) and HFS+ spontaneously. ...
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Recreating a partition on internal hard drive on Mojave/Catalina

I created a partition on my internal HDD of 50GB, in favour of Time Machine backup. Unfortunately, I discovered that Time Machine requires 100GB to backup my drive regularly. So I went back to Disk ...
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1answer
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Unable to remove Windows partition on Boot Camp partition

I have installed Windows Boot Camp partition and installed Windows 8. Later, I upgraded to Windows 10. I am unable to remove Windows partition using bootcamp assistant. The removing Windows option is ...
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Install of Catalina with bootcamp partition messing up

Problems are 1) I want to do it using internet recovery but it's prompting me to install Mojave despite doing option command r 2) I have a bootcamp partition that I don't want to delete. Which ...
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macOS Catalina - can't mount external hdd - verification/reading of the omap object failed: Illegal byte sequence

I have an external hard drive with 3 partitions, and one has given up the ghost. I can mount the other two fine but the third, my backup of data, can't be mounted. I dug around a bit and here's what I ...
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APFS partition error

So I've searched for a while and found several answers but I don't want to take a chance with the wrong command and wipe data so I'd like instructions specific to my case please. I resized my ...
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Unable to select a partition when installing windows through boot camp on Mac Air?

I’ve been able to get through all of the installation on the Mac side of things, but when opening Windows, it only allows me two partitions to select from and it’s not letting me click next with ...
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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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2answers
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This container can’t be split, because the resulting containers would be too small

I understand this question has been asked before, but my situation is a bit different. I have done the usual, I've tried diskutil cs list then diskutil apfs resizeContainer disk0s2 370GiB (from ...
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Catalina update fail, no bootable disk , can't access files

I'll start by saying that my issue is incredibly similar to Mac stuck in restart cycle after failed macOS Catalina update but being a new user I couldn't comment there nor I had any answers ...
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How do I run Boot Camp Assistant on a partition on an external drive?

I've partitioned my external HD and I want to install Windows 10 on it using Boot Camp Assistant. When I open Boot Camp Assistant, it shows my whole Hard Drive, not my partition. I've got the Windows ...
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Bootcamp partition lost - How to reclaim space back?

Trying to reclaim the 100GB I gave to Windows BootCamp a while ago. Problem is, going through the steps to get it back (BCA process) and I realised that my Mac no longer realises it had a partition ...
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Make an external bootable partition for bootcamp

I am not sure to have understood everything about bootcamp but here is the situation: I have an internal HD I want to keep. I have an external HD with two partitions: Partition 1: Time machine ...
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System keeps rebooting

I have a 2010 macbook pro with osx 10.13. It keeps restarting with the grey screen saying "your computer restarted because of a problem" In recovery mode, Disk utility First Aid found corruption. ...
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1answer
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Uninitialized HDD after GPT to MBR conversation, 3 HFS+ Volumes and 1 ExFAT

2 TB External Hard Drive. Error during converting from GPT to MBR and now Disk can't be mounted. 'The disk you inserted was not readable by this computer' appears when HDD is plugging in. Files ...
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1answer
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Unable to remove Windows Partition on Bootcamp

I have a problem with removing the windows partition on bootcamp. Using diskutil list, this was the result: /dev/disk0 (internal, physical): #: TYPE NAME ...
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Cannot merge partitions and remove bootcamp

I'm trying to uninstall bootcamp and merge the partitions. I've run the following which seems to have removed the volume but I don't think they are merged. diskutil apfs deleteContainer [diskid] ...
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mac merge 2 apfs containers, free container is not first on disk

I got a used macbook pro off of ebay. The previous owner had a recovery image taking up 420G on a separate containers. I am trying to merge the containers, but the system does not like it because ...
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How to rename and change icon of “EFI Boot” on Mac OS EFI manager [duplicate]

I have Windows on running on an external SSD for my Mac, but I am having difficulties renaming and changing the icon of my windows partition from "EFI Boot" to some thing else. Any help would be ...
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FreeDOS USB drive does not show in option key boot menu on Macbook Pro (Late 2011) [duplicate]

I've been struggling for two days to dual-boot FreeDOS along with Mac OS X on an old MacBook (late 2011) that I have. I've tried doing the live CD option and flashing it to the drive with Rufus. I'...
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How to boot from APSF volume?

I am trying to run 2 identical MacOS on my MacBook pro. I am following the following instructions: https://support.apple.com/en-us/HT208891 So far, I have added an APFS Volume, with flexible size, ...