Creating a new disk formatting scheme or altering an existing scheme

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21 views

Partition type suddenly FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF, drive unmountable

I have two drives inside my MBP, an SSD for the OS and the original HDD for large Data. The HDD has 3 Partitions: My Data (Core Storage volume) 20Gb for Linux 4Gb for Linux Swap Recently I ran ...
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1answer
22 views

Missing disk space after failed Bootcamp install

Earlier today, while running Bootcamp attempting to install Windows 7 on my late-2012 iMac, I suddenly lost 160g of disk space after Bootcamp failed to create the partition for Windows. Disk Utility ...
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39 views

Cannot boot into OS X after partitoning

I have installed Ubuntu on a Mac Mini, everything works great. I'm able to switch back and forth without any problems. After that, I used GParted in Ubuntu to resize the OS X partition. I then create ...
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1answer
14 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
23 views

Adding partition to disk creates unwanted third partition

I'm using disk utility to try to divide the partition I'm working on, which is 51.28 GB, into one main partition (to run OS X on) and one smaller HFS+ partition (on which I will eventually install ...
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17 views

How can I boot a WinPE USB on a Macbook? [duplicate]

I have a 2008 Macbook Pro with OS X Yosemite and Windows 7 on a bootcamp partition. Yesterday while trying to create another partition (in windows) I accidently converted my basic disk of primary ...
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1answer
41 views

Can't see Apple_HFS partition after using Minitool Partition Wizard

I tried to reduce my partition size using Minitool Partition Wizard on my BOOTCAMP partition (I didn't touch Apple_HFS partition) now I can't see my Apple_HFS partition in Disk Utility. However this ...
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29 views

Early 2013 Macbook Pro Retina El Capitan Only Getting Internet Recovery

I have a early 2013 Macbook Pro Retina 15 inch running El Capitan 10.11.4. For work reasons, I need a case sensitive file system so I created a second volume on my hard drive that is formatted as "OS ...
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28 views

Permanently Decrypt non-CoreStorage Partition Encrypted with FileVault

I am asking this on the behalf of someone who did not want to sign up for the SE network. I will use first-person for simplicity. When I bought my computer, it came with FileVault enabled as default. ...
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1answer
33 views

I need to make my partitions into a single one after a failed bootcamp, how do i do this?

I am a complete novice when it comes to macs. I recently tried to use bootcamp to run windows 10 and partition part of my hard drive. I used the bootcamp assistant and I followed all of the steps but ...
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1answer
21 views

What is the best solution for a free partition recovery?

Recently I accidentally partitioned my Seagate Backup Drive (1 TB) not knowing that everything would be wiped off (silly me). I am now in shock knowing that my files are somewhat gone. I have tried ...
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12 views

Cannot delete a disk partition OSX El Capitan 10.11.4 [duplicate]

For some reasons that is the only partition I can't delete but it's empty... I don't even remember ever creating it in the first place. As you can see both + and - are deactivated. Is there a way of ...
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1answer
32 views

Is it possible to encrypt a hard drive that is dual booting ubuntu using rEFInd?

I recently installed ubuntu on my macbook pro. I am using rEFInd to dual boot ubuntu. Following the installation, I tried to encrypt my Macintosh HD partition by first converting the disk to core ...
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45 views

Time Machine partition won't mount in OSX El Capitan, but mounts in Bootcamp Windows 10

Not sure what happened. Two days ago I just did a Time Machine backup and today the partition won't mount. The external disk is a WD My Passport bought several years ago and total 2 TB. I partitioned ...
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1answer
42 views

Missing Space on Drive using Core Storage after Boot Camp Assistant Failure

Using Boot Camp Assistant, I started to create a 50 GB partition, but it hung on partitioning. After waiting about 30 minutes without the progress bar moving, I quit the Boot Camp Assistant, thinking ...
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24 views

How can I add a partition to my Seagate external hard drive?

I am trying to add a partition to my Seagate external hard drive so that I can install Windows 10 on it but it won't let me add a partition at all. With a previous external hard drive I had (that no ...
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57 views

Can't reduce bootcamp partition size in El Capitan

I have a 512GB hard disk using the latest macbook pro running El Capitan. When bootcamp partition was created it was allocated 350GB. Now I want to bring that down to 100GB since the windows partition ...
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22 views

Bootcamp [in another partition] running as Virtual Machine on Mac

I have OS X in partition disk1s2 and Windows/Bootcamp in disk1s3. Is there a way of running this Windows (disk1s3) as virtual machine while I am on OS X? I read something like that for Linux + ...
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1answer
38 views

Boot Camp won't work: why don't I have disk0s0 or disk0s1 partitions?

I'm trying to use Boot Camp after resolving a partition mess. I've gotten back to a single partition after receiving the The startup disk cannot be partitioned or restored to a single partition. ...
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25 views

Accidentally Deleted BootCamp Partition. How to recover files and merge partition?

I accidentally deleted the BootCamp partition through Disk Utility on MBP 2012 Yosemite 10.10.5. I had some important files on the BootCamp partition. Unfortunately, I have no backup of the Windows ...
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1answer
55 views

OS volume shows as type 'FFFFFFFF-FFFF-FFFF-FFFFFFFF' after attempting to delete some Linux partitions—cannot log in

I was unable to just delete the partitions left by an old Linux Mint installation by pressing the '-' button in disk utility. I looked online and read that I could reformat them to a journaled format ...
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1answer
39 views

Upgrading one partition to El Capitan while leaving the other on Mountain Lion

We have an iMac that is barely still compatible with El Capitan. Right now it runs Mountain Lion okay, and actually it has a smaller partition on the hard drive for another clean installation of ...
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26 views

How can I make an image of a partition on a Windows PC, that is viewable on an iMac?

I have a Windows computer that is a theatre type computer that I'd rather not open up. I'd like to make an image file of the c:\ partition, but I'd want it to be in a format that is readable by a Mac. ...
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51 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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123 views

'the 'grub-efi-amd64-signed' package failed to install into /target/' during Linux Mint installation on an iMac

I have a Mid 2007 iMac, I've installed rEfind on the mac and the Linux Mint (Cinnamon 17.3) installer on an USB thumb drive . rEfind sees the USB thumb drive, sees grub installed on the key, I boot ...
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16 views

Lost disk space after partitioning w/ disk utility crashed

I made the mistake of deleting a bootcamp partition thru disk utility in hopes of making a larger partition with a fresh windows install. As I tried making a new FAT partition in disk utility I ended ...
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49 views

Problems Making a USB Windows Boot Drive - Then Booting my Mac from it

I've seen tutorials on how to make a windows usb/flash boot drive on a mac using a windows iso & bootcamp. I've also seen tutorials on how to boot a mac from a usb drive (hold down alt when ...
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2answers
47 views

How to read GPT drive in Mac?

I've a 500GB external drive. First partition is 199.58GB (blue) and the second partition is 277.4GB (pink). I use this drive in my Windows 10 laptop before this and both partition are GPT type. I ...
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1answer
33 views

How to reformat Macbook Pro SSD to regain “Free Space”

I just tried installing Windows 10 through Boot Camp. Before it actually started installing (but after I had partitioned my disk), I realized I had not plugged in a USB (which apparently you are ...
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22 views

El Captan disk utility did not see erased partition after fail bootcamp install

I try to get my full drive after fail a bootcamp install of Win. Now I have removed extra partition from my fusion drive, but can’t see empty space using the el captan disk utility. Using shell, ...
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1answer
56 views

How to install a bootable ISO onto a single partition of a usb stick?

Previous questions/answers dealt with the simple case of a single partition on the USB disk that was just overwritten with dd. Also it looks like the disk utility gui doesn't allow creation of ...
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16 views

macbook ssd hard partition unmount

Yesterday my fiend used my macbook to set his flash memory bootable but he made mistake and select my mac disk volume instead of his flash! Now when I restart macbook it shows a slasher question ...
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1answer
62 views

HFS+ Partition of Mac OSX is not recognized in Windows 10 Bootcamp

I installed triple systems (Mac, Windows, Linux) on my Macbook Pro retina mid 2014 with rEFInd boot loader. Hfs+ partition used to be visible in Windows 8.1 Bootcamp. But after updating to Windows ...
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1answer
82 views

Messed up my 1TB Fusion drive on my iMac with Disk Utility

Soooo something bad happened recently with my 1 TB Fusion drive on my 5K late 2015 iMac. I was creating a new 100 GB partition on my disk. So while the disk utility was busy scanning etc (doing its ...
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1answer
23 views

Recovering a confused partition table?

So I've got a MacBook Pro which I use for work (and thus every file is precious information) and my BootCamp partition was getting a bit small, so I resized it with GParted, but not before resizing ...
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35 views

My partition is using negative space. Should I worry?

As you can see, according to Disk Utility, I'm using negative space in /dev/disk0s7. This is obviously incorrect, however, I am slightly worried as to what this may mean for the partition's effects ...
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32 views

Mac OSX 10.6.8 Failed Boot Camp Partition Cleanup

I'm working with a late 2007 Macbook (A1181) running OSX 10.6.8. I do not currently have a working OSX disk I could recover off of This afternoon I was using Boot Camp to create a large windows ...
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39 views

Boot Camp - frozen during hard drive partitioning - iMac 27” w/ 3TB Fusion Drive

(iMac 27” late 2012, 3.4GHz, 3TB Fusion Drive, running El Capitan 10.11.4.) I've gone through the Boot Camp Assistant steps with all of the recommended options (created a bootable Windows flash ...
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2answers
47 views

Create hybrid MBR/GPT just like Bootcamp Assistant does

Currently I have two partitions with data on them I would like to keep (marked with a *): /dev/disk0 (internal, physical): #: TYPE NAME SIZE ...
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15 views

Isolate Partitions

I'm trying to partition my HD into a 'anything is ok' development/beta type drive and a no bs allowed drive. Not a fan of these drives having access to each others applications and file systems. ...
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1answer
49 views

Deleted Bootcamp partition and it just disappeared. Nothing to merge with OSX partition

I had Windows 10 Bootcamp on my MacBook Pro 15" 2015. I just tried to remove the Bootcamp with Bootcamp assistant by clicking "restore" and it gave me an error saying "The disk cannot be partitioned ...
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1answer
81 views

Create El Capitan install partition

I went through a lot of articles on how to create bootable os x install partition but eventually I ended up with a need of making resize of my system partition - unfortunately DiskUtility shows this ...
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1answer
124 views

Partition sharing - messed up with GPT/MBR

First of all, sorry for any English mistakes or print screen in French... I'm Belgian. I've had a lot of problems with an iMac 2009 27", mostly with Mac OS. Strangely, Windows (10) works with little ...
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2answers
40 views

Merge partitions with Macintosh HD

This is my diskutil list. I wish to merge Misc (disk0s4) with Macintosh HD (disk0s2) leaving only Macintosh HD (disk0s2). Normally I would use this command to merge the two disks: diskutil ...
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46 views

Format usb drive into ext4 and swap partitions

I have been trying to create a model of a passive WiFi tracker by following the steps given in the following link: http://edwardkeeble.com/2014/02/passive-wifi-tracking/ One of the steps requires me ...
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14 views

OS X stopped recognizing my HFS+ Time Machine partition on my USB GPT disk

I have a 2 TB USB drive that's using GPT, but OSX (10.11.4) on my macbook pro (early 2015) stopped recognizing my HFS+ partition after I inserted a partition before it ("TESTPART"), effectively making ...
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26 views

Partition map check failed because no slices were found for SD Card

When I connected my sd card to macbook, I got the error "The disk you inserted was not readable by this computer". I ran following commands ~ diskutil list /dev/disk2 (internal, physical): #: ...
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1answer
46 views

How to restore OS X drive to factory defaults?

I turned off the Core Storage volume manager on my OS X partition (i.e. diskutil cs revert). Now my Recovery HD displays in Disk Utility and in Startup Manager. I don't like this and would like to ...
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1answer
77 views

Reformatting disk with no partition map

I have a 250GB hard drive that I tried to "burn" an ISO to (to make it bootable). Something went terribly wrong.This is what the disk looks like in Disk Utility (unmounted). When I mount it, this ...
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218 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 ...