Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

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1answer
302 views

Disk format for HDD with both APFS and HFS+ volumes

For a HDD which will have both HFS+ and APFS volumes, is it better to format the disk itself in Disk Utility (on High Sierra) as APFS or HFS+?
2
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1answer
1k views

How do I remove everything Parallels?

Background: Mac Pro 4.1 circa 2009, specs: OS X El Capitan Version 10.11.3 (just updated last weekend) SN - H09440CK20H 2 - 2.93 GHz Quad-core Intel Xenon processors 32 GB RAM 2 - 1 TB HD 1 - ...
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4answers
7k views

How to create third partition after Macintosh HD and Boot Camp partitions?

I have a mid 2009 MBP. I am going to install Boot Camp beside Snow Leopard. I would like to have a third partition, DATA, and format it FAT32, where I will keep my data files easily and safely ...
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1answer
17k views

What's the minimum partition size for osx mavericks when dual booting with windows 8?

I used boot camp to setup dual booting between windows 8 and mac osx mavericks. To get the most possible space for Windows 8, should I have formatted my computer first? I was able to partition my ...
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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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1answer
310 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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1answer
2k views

Trying to format USB (using Linux/fdisk) so it shows up on my Mac

I have a USB drive that I can see/access/modify/etc in Linux/Ubuntu but it doesn't show up on my Mac OSX. I did sudo fdisk /dev/sdb (where my USB is) and then g to create a new GPT partition table, n ...
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3answers
2k views

Can upgrade to Mavericks harm Bootcamp NTFS data partition?

I consider to upgrade from Mountain Lion to Mavericks. I have two Bootcamp Windows 7 partitions, one for boot & system, another for documents and data. Both Windows partitions are NTFS. OS X ...
2
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1answer
244 views

How to uninstall Linux from a MacBook properly?

There are a lot of questions by those who have already bricked their macs trying to remove Linux so their questions usually stem from a position where one of the disk is labelled FFFF-FFFFFFFF-and ...
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1answer
719 views

Cannot install bootcamp because of disk error, but disk utility says it's fine?

I'm trying to partition for bootcamp but it fails because of that error. I ran disk utility's first aid multiple times. And it's always fine. What do I do? Edit: My mac is the newest imac from this ...
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1answer
1k views

Accidentaly converted from a basic disk to a dynamic one

I got a MacBook Pro (13-inch late 2013 retina) So I installed Windows 7 using bootcamp and all was fine. I then needed to create a 32MB FAT16 partition, when Windows prompted me to convert to a ...
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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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2answers
558 views

Can I install OS X onto a separate external drive partition?

There are plenty of articles explaining how to install OS X on a separate partition of your Mac’s internal drive and how to install it onto an external drive using a single partition. However, it’s ...
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1answer
236 views

Trouble with my partitions

I have some trouble with my partitions on my Macbook Pro. I created 2 partitions. One named "Yo" where I have installed Yosemite release. Another one named "Save" where I put all the stuffs I need to ...
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3answers
2k views

Clear free space in Disk Utility

So I recently removed Windows 7 from my iMac, but Bootcamp didn't let me do it. I used Disk Utility instead. The old Windows 7 partition now shows up as free space. I want to reinstall Windows 7 again ...
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0answers
78 views

delete admin partition [duplicate]

I’m new to MacOS world. By accident I deleted the admin partition (Directory). Every time when I want to install a programme, the system ask me for the admin login. I enter the login but it is not ...
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1answer
224 views

After deleting kali linux partition, macOS partition startup Volume type FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF [duplicate]

First of all I know this problem and similar problems have been solved before, but I had tried the solutions from the other posts and I didn’t have luck. I know klanomath has a lot of experience and ...
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1answer
3k views

Erase partition without recreating one?

I've got an external USB hdd that I wish to use entirely as a TrueCrypt volume. There was one pre-formatted partition, so I'm trying to erase that with Disk Utility. But no matter what I do or try, ...
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3answers
6k views

Cannot partition w/ Boot Camp Assistant on macOS Mojave

Late 2016 Macbook Pro running Mojave 10.14.3, APFS-formatted (ugh). I have run Disk Utility to verify my disk, and I've run fsck -fy from single-user mode several times. Both of these have reported ...
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2answers
1k views

Should I defrag my SSD before creating a partition for Boot Camp?

I have a 500GB SSD in my MacBook Pro. I have been using my laptop for over three years - and it was migrated using Migration Assistant from a previous laptop that I had been using for five years ...
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1answer
10k views

Disk Utility “First Aid” says “Problems were found with the partition map which might prevent booting” after clean install

My Mac Mini (Mac Mini 3,1 at OS 10.11.6) shows this after a "successful" run of First Aid from Disk Utility on the internal HD (i.e. not just the main volume, the entire HD) "Problems were found with ...
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1answer
2k views

Creating a EFI partition

I have been having trouble installing OS X Mavericks and I think I found the problem. It told me I couldn't boot up with Macintosh HD, so I verified my disk and I got this error: This disk doesn't ...
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1answer
3k views

Cannot use Disk Utility to create partition from free space on external USB drive

I have a 3 TB Western Digital red disk in a USB hard drive dock. The drive is GPT, and I have two volumes on it (one volume is "Microsoft Reserved", other volume is NTFS). The other part of my drive ...
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1answer
1k views

Does my Bootcamp partition, disappeared by Lion install, still exist?

I installed Lion on my macbook air, and noticed a couple of days later that my bootcamp partition was gone--rebooting with option key no longer showed the volume, and diskutil shows the following ...
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1answer
793 views

Can I repartition my primary hard drive without removing the Lion recovery partition?

Scenario: I boot into Recovery mode and open Disk Utility. Then I select the primary hard drive and choose 1 partition. Will that destroy the recovery partition as well?
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0answers
22k views

After stuck “Partitioning disk” by Boot Camp

I use a MacBook Pro Late 2011 with OS X El Capitan (10.11.4). I wanted to install Windows using Boot Camp Assistant. However, I got stuck at Partitioning disk.... It seems that it is a very common ...
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1answer
54 views

USB Sticks not getting properly recognized

Two of my USB sticks (Lexar and PNY, both 32 GB) are not getting recognized correctly by macOS Sierra. Both worked before (one formatted with NTFS, the other with FAT32); they were then used as ...
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1answer
2k views

Disk Utility not letting me partition my SSD or modify the current ones

Just yesterday I finally got my hands on a MacBook Pro in which I was planning to install Ubuntu and Windows aside from OS X for studying purposes. I was barely beginning by partitioning the disk, or ...
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1answer
76 views

How can I properly remove Linux and resize the partition if it's showing FFFFFFFFFFFF-FFFFF-FFFFF without turning off my Macbook?

Having deleted both linux partitions from my device using sudo diskutil eraseVolume free none disk0s4 and sudo diskutil eraseVolume free none disk0s3 In an attempt to then have both partitions ...
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2answers
2k views

Unable to install Windows 8.1 using Bootcamp, system volume doesn't contain required free space?

I'm unable to install Windows 8.1 using Bootcamp on my 2015 MacBook Air. The installer says setup was unable to use the existing partition because the system volumes doesn't contain the required free ...
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1answer
152 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
8k views

Cannot format SSD to OS X Extended (Journaled) in order to restore

yesterday my computer stayed awake during all night, when I woke up it stopped working. I got many errors, one that says for example that I don't have enough space in my computer even though that when ...
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1answer
448 views

Windows 10 partition disappeared after resizing

My Windows partition disappeared after resizing it. I found a post on NERDr with a walkthrough for how to fix it and I did everything. This is what I got in my terminal: Enter an MBR hex code (...
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1answer
2k views

Cannot delete partition (minus greyed out) - non-encrypted, no core storage

When trying to install Windows 10 from scratch on my Late 2013 MacBook Pro, I was unable to remove the old BOOTCAMP partition through the Boot Camp Assistant. I erased the partition with Disk Utility,...
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1answer
843 views

Failed attempt to fix macOS partition startup volume set to FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I attempted to fix an issue I encountered yesterday my MacBook Pro (13-inch, Mid 2012) following instructions in the top answer of this thread. I'm afraid I may have inadvertently destroyed my data by ...
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1answer
5k views

Why did an “Untitled” partition appear that uses up half the disc space and how do I get rid of it?

On a Mac OS X Server, I realized today that the 1TB disk has all of the sudden two partitions, both of them around 500GB large: 1TB APPLE HDD ST1000LM024 Macintosh HD2: Mount Point: / ...
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1answer
119 views

Can I safely remove a broken recovery partition?

Can I remove the broken recovery partition? $ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme ...
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0answers
127 views

How to restore Startup Manager Bootcamp option to point at Windows partition - GRUB overrided Startup Manager when Ubuntu installed

For getting macOS, Windows 10 and Ubuntu as boot options at start up, I: ran Bootcamp to install Windows 10. The result was macOS and Windows options available as boot options - when the option-key ...
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3answers
10k views

How to repair Mac partitions without Internet Recovery and Rescue USB?

Resizing the C:\ drive under Windows(bootcamp) corrupted mac partitions. Neither Mac OS X nor Windows are able to boot. Holding the Option(ALT) key shows only Windows, which can't boot. Internet ...
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1answer
3k views

Upgrade to Yosemite failed - MBR and GPT don't match?

Upgrading to Yosemite so I can install the newest version of xCode. Shortly after starting I get this error: I've tried going into Disk Utility and repairing permissions, but even though it says it's ...
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0answers
206 views

Create a partition that both Windows and macOS Sierra can access via Disk Utility

After I installed macOS Sierra I decided I wanted to also have Windows for gaming. I installed Windows 8.1 via Boot Camp Assistant and gave it about 110 GB of space. After some time I realized that ...
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1answer
52 views

Crash during Boot Camp restoration. How do I remove my Windows partition?

As mentioned in the title, my OS crashed while removing the windows partition. Now Boot Camp Assistant doesn't recognize the pre-existing Windows partition anymore. See diskutil results below. How ...
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1answer
151 views

Need to partition free space after clone on mbp

I cloned my MacBook Pro 1 TB SSD to a 2 TB SSD. The new SSD shows up just like the old one. How do I add the unallocated free space (~1 TB) on the new SSD to the main volume? technicgal1:~ ...
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1answer
2k views

Crashed when creating a partition - now missing drive space!

Just a couple of hours ago, while I was taking a GNU course, I decided to create a partition on my SSD to have ubuntu installed, meanwhile the disk utility was doing that, suddenly it just crashed and ...
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1answer
273 views

Is it faster to resize a Time Machine partition, or completely wipe it and back up again from scratch?

I have a ~500GB Time Machine partition I'd like to shrink slightly. My internal source partition is around 400GB. Resizing the partition would be extremely slow, since Disk Utility has to check all ...
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1answer
593 views

Partition showing as 'FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFF'; attempted to fix it but made it worse

MacBook Pro 2015. I recently dual-booted my Mac with Linux for school however I changed my mind on which distro to run and figured the best way to change would be to format and remove the Linux ...
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1answer
3k views

Cannot unmount disk0 resource busy

I am unable to wipe my hard drive and install new OS X as the resource is busy. I would imagine this is because I have Recovery open on this disk and that's why it is busy. I've tried: diskutil ...
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1answer
6k views

What does “EFI system partition couldn't be created” mean?

When trying to click "Repair Disk" on an external hard drive from Disk Utility, I got the following error message: ... Repairing the EFI system partition's file system Updating boot support ...
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1answer
44 views

I am trying to clone a 2TB drive that has mac os x 10.6.8 onto a smaller drive but dont know what I am doing

I have a Mac Pro that I cant install an OS onto at the moment because I do not have snow leopard. I do have a bootable 2TB Western Digital drive that comes from an identical Mac Pro that has 10.6.8 ...
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1answer
957 views

How to recover lost partition after diskutil erasevolume noformat

I previously had 2 partitions on my 1TB hard drive... - Partition 1 (disk0s4): Macintosh HD (which had OS-X and all my data) - Partition 2 (disk0s2): Apple HD (which was a back-up partition) I erased ...