Questions tagged [partition]

Creating a new disk formatting scheme or altering an existing scheme

Filter by
Sorted by
Tagged with
4
votes
3answers
1k views

Unable to increase partition size with subsequent blocking partition

I can't make my main Macintosh HD partition bigger. It's limited by the partition in the middle, which seems to be frozen, I can't move it down to make space for my main partition. Also I can't seem ...
1
vote
1answer
295 views

FFFFFFFF problem with hybrid partitioned drive, not able to fix with the guide in other topics

Like many other uses who reported the same problem, I tried to install and delete Ubuntu in my 13' mid-2014 MBP, messed up and got FFFFFFFF-FFFF-FFFF-FFFFFFFF partition, tried to follow the solutions ...
21
votes
3answers
379k views

What is the 'Mac OS X Base System' disk image on my 2011 MacBook AIr?

On my 2011 MacBook Air with Mac OS X Lion, I boot into Recovery mode via holding the command-R key during startup, if I go into Terminal and do a diskutil list, I get a list of 12(!) logical disks. ...
9
votes
1answer
9k views
+50

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 ...
16
votes
1answer
74k views

I deleted my Bootcamp partition but can't resize my OS X partition

I didn't realize this would cause issues, but I used Disk Utility to delete my Bootcamp partition and then tried to resize my main partition to fill the disk. This causes an error and I searched for ...
15
votes
6answers
23k views

How can I change the title of a boot image?

I have an external Hard Drive with two bootable partitions on it. The first is an image of a Mac OS X 10.6 Install DVD, and the second is an image of a Mac OS X 10.6.3 Install DVD. When I plug the ...
7
votes
2answers
38k views

How do I change a disk partition map scheme from MBR to GUID Partitions Table?

I just finished the huge download of Mac OS X Lion, started the installer, and now I have a problem. The installer says that I must have the GUID-Partitions Table Scheme. The problem is that when I ...
5
votes
2answers
5k views

How to change the “Recovery HD” partition to type “Apple_Boot”?

Typing in the terminal diskutil list gives me this... /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme ...
3
votes
1answer
344 views

Remove Linux partition on Mac. CoreStorage problems

I have a Macbook pro 2015 with a 256 GB SSD and a Linux partition. I would like to remove the partition. Following the steps written in here, I got stuck in the Modify step. Once I execute the command ...
3
votes
5answers
3k views

Can not delete Free Space on iMac 5K: Partition doesn't appear in CS list

I recently tried to install a bootcamp instance of Win 8.1. The install failed for some reason (wasn't clear from the error message). This left me with an unaddressable partition. I erased that ...
2
votes
3answers
4k views

How can I make my Mac partition bootable again?

I am running macOS High Sierra on a 2011 iMac. I was also running Windows 10 via BootCamp. In order to prepare for a 3rd OS, I installed reFind and resized the BootCamp partition to make space. ...
2
votes
2answers
5k views

How do I regain unaccessible free space after a failed Boot Camp install on a non-Fusion drive?

Firstly - I know this has been answered, but I am hoping for a more broken down answer, as I am not quite so technically minded, but I can follow instructions! So in summary I have tried to install ...
7
votes
2answers
14k views

Remove Ubuntu and grow Mac partition

I'm new to the whole Mac world, and the first thing I did when I got my MacBook Air 2015 was I installed Ubuntu, but have regretted it now and want to remove it and get my space back into the Mac ...
4
votes
1answer
5k views

Resizing Mac OS partition - macOS High Sierra

Hi I am having issues trying to resize my Mac OS partition, I previously had a very large recovery partition almost 100gb as a result of removing my linux installation, I since resized this to 650mb. ...
3
votes
1answer
4k views

Partition on HFS+ external drive: “Invalid number of allocation blocks”, file system check exit code 8. Unable to repair, even in recovery mode

As the title says, I'm getting the error "Invalid number of allocation blocks" on a particular HFS+ partition of an external drive. I am unable to repair, even in recovery mode. Log results when I ...
2
votes
1answer
5k views

Partition Type : FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I know this has been asked on here before, and similarly to the others I have not backed up my data... I found this duplicate and got lost in the answer and didn't want to mess too much with the ...
1
vote
1answer
399 views

Fix formatted GPT in SSD

I accidentally formatted my SSD's GPT while formatting a USB in Linux's gparted. Now, when running gpt in Mac's command line, this is how my SSD looks like: My-MacBook-Pro:~ user$ sudo gpt -r show ...
1
vote
1answer
2k views

How do I recover/fix my OS X partition?

I'm coming from Super User Community, since I wasn't aware of this specific one. My first and foremost care is the files on my system, I have been slacking on making backups (I know, it's really bad) ...
1
vote
1answer
2k views

Hard drive no longer accessible

This is a 4 TB hard drive formatted in Mac's Disk Utility as a single non bootable Exfat partition with the drive letter G. It worked fine before I decided to make a clone drive of my C bootable drive....
1
vote
1answer
3k views

Reclaim hard drive space from deleted partition and reclaim Apple bootloader

I had my system dual-booted with Ubuntu 14.04. However, I found myself not using it enough to warrant the storage space. I deleted the ubuntu partition and the ubuntu swap partition. However, am now ...
0
votes
0answers
346 views

Deleted MacOS partitions and installed Ubuntu, now can't boot with DVD, USB or internet recovery to reinstall MacOS

I deleted all partitions on the MacBook's HD and installed Ubuntu. Now I want to reinstall MacOS but nothing will work. Holding option on startup shows the grey screen with the pointer but no ...
51
votes
6answers
119k views

Mount Ext4 on El Capitan

I recently installed OS X 10.11 on my Mac. I tried to read a SD card with an Ext4 partition which wasn't even shown in Disk Utility, although diskutil did show it as a Linux partition. I can't seem ...
8
votes
2answers
16k views

How to fix Mac hard drive partition showing as Fdsik_partition_scheme

My situation seems very similar to how to fix GUID hard drive corrupted to MBR but with enough differences that I haven't been able to put together a confident solution. I have a 3TB Toshiba drive in ...
15
votes
3answers
98k views

How can I delete a partition (coreStorage logical volume?) from the Terminal?

I finally understood why Disk Utility will not change the partitions on my HDD, even though I added the most recent one myself (maybe significant: to test Yosemite DP) with it. Now I see it says it ...
14
votes
3answers
6k views

Is there a safe way to move the /Users folder to a separate volume/drive?

I have an SSD on the way and will be moving my HDD to the optical bay slot in my MBP. I want to boot from the SSD and store my /Users folder on the HDD. I've seen the way that everyone suggest ...
8
votes
4answers
30k views

BootCamp, can't partition SSD

I've upgraded my OS X to the latest Yosemite GM Candidate and cannot for the life of me figure out how to partition my SSD for BootCamp. Here are some screenshots of the problem: And when i try to ...
9
votes
2answers
42k views

How do I format a disk partition from the command line on OS X?

How do I format a disk partition from the command line on Mac OS X? In case someone wonders why: because for some people Disk Utility fails.
4
votes
2answers
18k views

Boot Camp partition broken and can't be repaired in OS X 10.10.4

Suddenly my Boot Camp partition vanished: not visible in Finder, not visible on startup. In Disk Utility I can see the volume, but it's broken (verification log): Verifying volume "disk0s4" Verifying ...
5
votes
2answers
20k views

Can I remove Recovery HD partition?

We replaced the hard drive with a Patriot SSD in our iMac at work. I messed up while cloning the drive to the new SSD using a GPartEd CD. Everything works but there is about 40 GB unpartitioned that I ...
12
votes
6answers
37k views

Disk Utility Cannot erase USB Drive (Error: -69877: Couldn't open device)

I have a PNY 128gb flash drive that I can no longer modify (can't delete files). I've tried to reformat it using Disk Utility but I get the following message and my usb is unmounted: I've followed ...
5
votes
4answers
77k views

How can I mount partition disk0s4 that became inaccessible after a clean installation of Mountain Lion?

The hard drive on my MacBook Pro has two partitions. One with the OS and the other with data. Yesterday, from a USB boot drive, I performed a clean installation of Mountain Lion to the OS drive. I ...
3
votes
1answer
3k views

Triple Boot: “Missing operating system” on Windows 7 partition after Ubuntu installation

I tried to install Ubuntu (without rEFInd) and followed this article on how to achieve that on a dual boot Mac (macOS and Windows): Installing Ubuntu on Mac with macOS and Windows already installed ...
3
votes
3answers
5k views

Unable to resize Lion partition

I decided to do a clean install of Lion on a new partition, then after copying my stuff removed the old one. I'm now stuck with 100~ GB of free space and a 20 GB partition that Disk Utility won't let ...
2
votes
2answers
985 views

I can no longer boot into macOS after resizing my bootcamp partition

The Problem: My macOS partition doesn't appear as an option at boot Background: I had a main el capitan partition and a bootcamp partition. I used the EaseUS program to resize the bootcamp partition ...
14
votes
2answers
8k views

Can I resize a BootCamp partition without reinstalling Windows?

Does any one know how to do this?
3
votes
3answers
9k views

How can I resize a partition on OSX 10.10.5

I have a Mac with OS X 10.10.5 on a HD which had 4 partitions. Using Disk Utility I deleted one of the 4, intending to slightly grow the 3rd (containing the OS), leaving space for a new partition to ...
3
votes
2answers
3k views

What options exist to reliably have three partitions and Boot Camp on Apple Hardware?

What robust setups of partitions which accommodate (a) MtLion OS X, (b) Windows x64, (c) Data partition used [primarily] under Windows? Things that would be desirable (optional) past the basic ...
2
votes
2answers
9k views

Resizing HFS+ volume after cloning

I cloned a disk containing an HFS+ volume to a larger disk using the command line dd utility. Now I want to grow the HFS+ volume to fill the new disk. There's an EFI partition before the HFS+ volume ...
2
votes
2answers
2k views

Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF Macbook Pro [duplicate]

I was trying to install Kali linux in a dual boot fashion when I accidentally ended up install a terminal only version of Debian as a second partition. So I decided to retry, which meant I needed to ...
8
votes
3answers
46k views

Cannot delete or merge old boot camp partition in El Capitan

So i've battled with this for quite some time, look up various topics with various solutions, however i have yet to succeed with merging my partitions into one. I had previously installed windows 10 ...
5
votes
2answers
4k views

APFS partition inaccessible, container missing

I'm running macOS Mojave on a late-2015 4k 21.5" iMac. I have lost access to my internal hard drive, but I can use my iMac by running macOS from an external drive or through recovery mode. When I ...
3
votes
1answer
2k views

Accidently deleted some small sized partitions when installing WIndows(Bootcamp). OSX Partition wont boot

I tried to install Windows 8 into my Mac via Bootcamp. I booted into the Windows 8 Installer and had issues formatting the drive that I partitioned for the OS. Like an idiot, I deleted all of the ...
3
votes
2answers
762 views

Resize Boot Camp partition

I installed Windows 8 on my MacBook Pro using Boot Camp. Now I've figured out I should have made the Windows 8 partition bigger. Is this safe to attempt using Disk Utility? If not, how do I go about ...
2
votes
2answers
26k views

Mac won't boot Windows partition after using disk utility

I needed more space on my Windows partition... So I used Disk Utility to free up some space from the OS X partition, and upon restarting to Windows in order to add the free space to windows, I ...
2
votes
3answers
4k views

Recovering files from Time Machine backup disk after wrong dd

I made a horrible mistake: I ran dd on an external hard drive, that was the Time Machine backup storage, to make it bootable. After a few seconds I cancelled the command, but the hard drive is shaped ...
1
vote
2answers
3k views

Lost Windows Bootcamp boot entry after resizing the partition

I have a 2011 iMac that I had used Bootcamp utility to install Windows 7 on. I got overzealous and tried to triple boot Windows, Mac and Linux on the iMac. I no longer need Linux on this iMac but the ...
1
vote
2answers
1k views

How to Install Ubuntu on Mac with High Sierra and Legacy BIOS Booting Windows 10?

My 21.5-inch, Mid 2011 iMac has High Sierra (macOS 10.13.6) installed. A 64 bit version of Windows was originally installed using Boot Camp. Windows uses the legacy BIOS boot method. I have upgraded ...
0
votes
3answers
13k views

I can't shrink my OS X Yosemite partition [duplicate]

I recently reformatted my machine and am trying to shrink my OS X partiton to make room for a linux partition, following instructions at http://www.makeuseof.com/tag/install-linux-macbook-pro/ . I am ...
12
votes
1answer
16k views

Can't ever remove partition?

Running Mountain Lion. I added a partition with Disk Utility and then had second thoughts about it. I'd like to remove the partition i created, MacSSD2 and hand over its space back to MacSSD. As you ...
4
votes
1answer
155 views

How should I recover my NTFS partition that I have accidentally deleted on my Mac

I have a 2 TB external HDD that was divided in 2 partition: First partition: 280 GB Second partition: 1720 GB I accidentally delete the second partition. Here are several steps that I already did; ...