Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

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1answer
70 views

Why Apple partitions the SSD drive this way, and which partition should I removed?

I am planning to reformat both of my drives in my 27 Inch iMac (mid 2011), and I have a question about the way the SSD is partitioned by Apple. Why are there are three tiers in my SSD? I don't want ...
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2answers
261 views

Cannot resize APFS partition - “The new size must be different than the existing size”

I have a 1TB SSD on macOS High Sierra 10.13.6 with the following APFS partitions: $ diskutil list /dev/disk0 (internal): #: TYPE NAME SIZE ...
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26 views

EFI missing, Question folder appears, Mac SSD appears and disappears, what do I do?

Setup Macbook Pro retina 13 A1502, SSD 128Gb Running Yosemite, but currently doing the update for high sierra. Problem: Question marked folder appear after I left it for 2 days, battery run out (left ...
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28 views

Create a new partition with disk utility

I'm running OS X 10.11.6 and I want to create a new partition on my disk (disk0). Is there a way to first resize the disk to make some space and then add a new partition? When I boot from this disk ...
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29 views

Resized with iPartition but MacOS still reports old partition size

I resized an external drive partition from 800 to 900 GB with iPartition but MacOS still reports old size. Did unmount drives, did restart, but still. MacOS 10.12.6 iPartition 3.6.2 (216) Update: ...
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1answer
42 views

How to merge “Container disk1” back into my MacintoshHD?

Through some failures trying to remove Bootcamp I've found myself with a 289GB Macintosh HD and a 201GB "Container disk1". I initially tried to erase the extra volume, thinking it would then give me ...
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1answer
36 views

Partition external SSD (Win10 already installed) for Mac

My situation: I successfully installed Windows 10 on a Samsung T5 external SSD (size of 1TB) which I can boot into using my MacBook Pro 13" (2017 model w/ 4 Thunderbolt 3 ports). Under Windows, the ...
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1answer
26 views

Macbook Air 2015 High Sierra cannot merge free space partitions

I think I messed everything up when I erased the content of a partition from bootcamp. Please give simple instructions. I have no knowledge about how storages work. Thank you.
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0answers
41 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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0answers
33 views

What is this 11.59 GB partition on my iMac? [duplicate]

What is this 11.59 GB partition ? Is that supposed to be there ? If not, what can it be and how can I remove it ? I don't remember seeing it before I used Bootcamp and installed Windows. I installed ...
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1answer
34 views

“Lost” 300 GB of disk while trying to install Windows via Bootcamp

Had Windows installed with Bootcamp and for a couple of years it went fine, until I recently fired it up again and when it tried to update it went into a crash -> reset (only option that made it boot, ...
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1answer
58 views

Installing Windows 10 on iMac 27" (2017) Mojave, 3TB

I'm trying to install Windows on my Mac. I had no problems before, or on my older iMac/Macbook, with installing Windows on a Mac. I decided to detach my Fusion Drive, so I ended up with a 3TB HDD ...
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partition all unallocated space Mac Mojave

How do I create a partition out of unallocated space on Mac OS Mojave/APFS? diskutil apfs list in Terminal indicates I have 137.8gb unallocated, but in Disk Utility I can only add a partition up to 68....
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22 views

Claiming free space partition: “it does not appear to be a valid Core Storage Logical Volume UUID or disk”

Some time ago, I divided my macBook into three partitions: macOS Sierra, Linux and a shared data partition. Now, I wanted to get rid of the third, merging it to the macOS one. Since I couldn't resize ...
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1answer
28 views

Mac thinks USB is the wrong format

I have a USB drive that I cleaned and formatted as FAT32 on my Linux machine because Diskutil disableOwnership wouldn't work. I plugged it into the Windows machine with the files I need and copied ...
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1answer
45 views

Lost space after removing bootcamp partition via bootcamp assistant [duplicate]

please help i lost 150gb space after deleting the partition via boot camp assistant and the disk utility won't recover it or partition it as one disk i tried to recover by timemachine but the disk ...
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1answer
165 views

Bootcamp Error: The startup disk cannot be partitioned or restored to a single partition (not a duplicate)

I am running Mojave, trying to install the latest version of Windows 10. I had this error, so followed the instructions here: Bootcamp issue: The startup disk cannot be partitioned or restored to ...
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Boot Camp cannot install Windows because “The startup disk cannot be partitioned or restored to a single partition.” [duplicate]

I have installed macOS Mojave 10.14.5 on a MacBook Pro early 2011. Now I want to install Windows 10 but I am unable to do it. Boot Camp shows the error The startup disk cannot be partitoned or ...
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0answers
64 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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0answers
24 views

One mac shows an EFI partition for my EHD, another does not

like the title says, I have one mac that mounts the EFI partition on my external hard drive, and another that does not. I'm not sure how the EFI started showing up on the one mac, but I'd like it to ...
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1answer
35 views

Disk has multiple partitions but Disk Utility can only mount first one [duplicate]

View from Disk Utility: Output of diskutil (for this disk only): /dev/disk6 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: ...
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Trying to install OS X El Capitan, error of external hardrive needing GUID Partition Table Scheme

I have an old MacBook Air with Software Mac OS X Lion 10.7.5 (11G63). I am trying to install the OS X El Capitan but having issues. First there was not enough memory on the mac (even though I have ...
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Can anyone help me figuring out what's wrong with my drive structure?

I've realized something is wrong with my disks/drives/partitions structure when I tried countless installing Windows via Bootcamp but it would always fail. Please take a look at what I have: This is ...
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0answers
36 views

Too many partitions on iMac

I don't know what I did or how to delete all the partitions to restore one disk. I don't want to see on diskutil all these disks. What do I need to write in the terminal to delete everything? iMac ...
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1answer
26 views

Deleting my Recovery HD?

So I'm running the latest Mac OS Mojave version on my ~4 yo MacBook Pro. I have, and I had for a while now this "Recovery HD" that takes aout 70,3GB. So 3 questions here : I'm getting kind of narrow ...
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0answers
37 views

Merging separate APFS volumes into startup disk

A 50 GB APFS volume was designated as the startup disk on my Mac running on macOS Mojave and there is 450 GB of unused space in another disk2. diskutil list output: I need to merge that 450GB of ...
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46 views

Computer Froze, Now Raid over iSCSI (APFS Format) is no longer mountable. GPT/MBR not present

I was exporting video in Premiere and the computer froze so I had to restart. Upon restarting, I noticed the raid drive I connect to over iSCSI was not showing up on my desktop. However, it appeared ...
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1answer
1k views

Bootcamp - Stuck on “Partitioning Disk…”

When attempting to add a Windows 10 (April 2018, build 1803) partition to my 2019 iMac, I get stuck on "Partitioning disk..." perpetually. When I look at Disk Utility, the OSXRESERVED and BOOTCAMP ...
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1answer
67 views

Mac OS not accessible

I was recently resizing a partition on my mac (10.13) and a partition came up named "recovery HD", I looked and saw that it only had 650mb. I tried to delete and couldn't along with the partitions ...
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1answer
30 views

Is it necessary to “Restore” files from a Time Machine backup if I can already access them directly from the backup disk using Finder?

I have an external hard drive that I've separated into two partitions: one that I use for additional file storage, and one that I use as a dedicated Time Machine backup disk. Something has gone wrong ...
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3answers
138 views

What's the best way to use SuperDuper to back up multiple hard drives to partitions on a single drive?

Here's the setup I'm setting up: Mac HD (500GB SSD) Media HD (2TB SSD) Daily Backup HD (3TB HDD, partitioned into a 2TB Daily Backup Mac HD, a 500GB Daily Backup Media HD, and an irrelevant 500GB ...
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0answers
184 views

Yet again an FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF partition issue

Update June 10th Partition seams to be back, almost, please check update 4 at the bottom This is happening on a Macbook Pro June 2012 version. Disk is a 1T SSD and it was up to date with Mojave till ...
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0answers
25 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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0answers
70 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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1answer
55 views

Hard drive ignores available free space

I have a 500 GB SSD. At one point, it had 2 partitions--one for my regular macOS boot (430 GB), and one for developer previews (~70 GB). At some point, I deleted the developer preview partition, but ...
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1answer
220 views

How to repair damaged hybrid partition table from Windows?

I am using a 2010 27" iMac with Mac OS High Sierra and Windows 10 via Bootcamp. Recently, I have had an issue where every Mac update renders the Windows partition unbootable. This means that after ...
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0answers
38 views

Question about custom partitions, VeraCrypt and APFS

After a couple of years of delay, I've upgraded to High Sierra. Now, I have an external disk used for backup, with the following layout: /dev/disk6 (external, physical): #: ...
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1answer
21 views

How to merge 2 partitions on macOS

I have an MBP running macOS High Sierra. There are 2 partitions. How can I get rid of BC1, and merge the space into Macintosh HD? Know very little about macOS. Please help. Thanks!
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1answer
116 views

External HDD with encrypted mac partitions is no longer recognized

I have an external disk which I use for data and a TimeMachine backup. For some reason the partition table appears to be broken and I may already have worsened the problem by trying to fix it with ...
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1answer
462 views

BootCamp The startup disk does not have enough space to be partitioned

I am currently trying to install bootcamp, however i am experiencing the following error: "The startup disk does not have enough space to be partitioned." "You must have at least 42GB of free space ...
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1answer
32 views

Cannot boot into Ubuntu installed on an external SSD after installing Windows with Boot Camp

I have a MacBook Pro running macOS Mojave and an external SSD with Ubuntu installed on it. The way I swapped between macOS and Ubuntu was by pressing the Option/Alt during boot to choose between ...
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1answer
46 views

Mojave can't be installed but still boots to Installer partition

I downloaded macOS Mojave from the App Store and, upon running it, it told me that my MBP (15-inch, Mid 2010, currently High Sierra) can't be upgraded to Mojave. Then it restarted my Mac... into the ...
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1answer
48 views

Are there any risk of bricking the macbook by cloning to a partition?

I'm currently using a mac with 3 bootable partitions (multiboot). MacOS, Ubuntu and Arch-Linux. I can switch between the operating systems using rEFInd I mostly only use Arch-Linux but only gave it ...
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2answers
271 views

MacOS partition doesnt boot up and shows as MBR part 255 [duplicate]

Sadly the post tagged as duplicated does not work for me ——————— Quick specs: Macbook Pro Mid2012 500GB SSD thats been in the Macbook for around 4 years MacOS Mojave BOOTCAMP Windows (100GB) ...
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1answer
152 views

APFS Container Disk & APFS Container Scheme Mismatch - Cannot Resize

I have an issue where I screwed up my partitions by removing a PC formatted partition, and it did not recombine itself with my overall partition. Issue happened because I got a new SSD, loaded my mac ...
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1answer
59 views

Can't resize partition [duplicate]

My Disk Utility is showing me some Weird Stuff. My current startup partition is showing as 155 GB, with (I was shocked to discover) 344 GB of unpartitioned free space: I can try to resize the first ...
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1answer
21 views

Macintosh HD partition missing from startup options [duplicate]

I tried to shrink my Windows Bootcamp partition using third-party software which led to my Macintosh HD partition missing from startup options. Unfortunately I don't have a recent backup for the whole ...
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0answers
53 views

External FileVault-encrypted backup – corrupted partition map

My FV-encrypted external drive was working fine, and now it's not. In Disk Utility (GUI), it shows as "Unformatted". diskutil list: /dev/disk2 (external, physical): #: ...
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1answer
214 views

Lost my APFS partition after using EaseUS partition manager on Bootcamp

I used macOS mojave(APFS partition) and Windows10(Bootcamp). And I tried to expand Bootcamp partition with moving Windows OEM partition by EaseUS partition master in windows. After this, I can’t find ...
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0answers
43 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 ...