Creating a new disk formatting scheme or altering an existing scheme

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16 views

I made a “fusion drive” using 2 SSDs, is this a bad idea?

I have a late 2015 5K iMac with 3TB fusion drive, which is 128GB SSD and 3TB spinning disk. This morning I took out the 3TB disk and put in a 500GB Samsung SSD, getting a total of 628GB of flash ...
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1answer
22 views

Ghost-Imaging the BOOTCAMP partition for later restore?

I have a MacBook and I plan to upgrade to Windows 10 but want to be able to roll-back to the original Windows 7 in case Windows 10 is not good for me. I have used Symantec Ghost to do a Hot-image (i....
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0answers
18 views

External hard drive : Problems were found with the partition map

I have an external hard drive which carries all my most precious files (some are backed up on a second hard drive, but not terribly recently). I decided to "encrypt" this hard drive (which I ...
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1answer
3k views

No bootable device after failed Windows 7 installation via Bootcamp

While trying to install Windows 7 via Bootcamp on my MBP Retina today I really messed up. After getting into the drive selection in the Windows installation utility I deleted the other partitions (3 ...
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1answer
6k views

Can't boot into Mac OS after Windows install via Bootcamp

I just installed Windows 10 successfully via BootCamp. Now I am neither able to boot into OSX, nor is its partition shown anywhere. Turns out the issue occurs because of a mistake I made during the ...
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1answer
94 views

Boot Into Recovery Partition After Installing Linux.

I want to install Linux on my mid 2014 Macbook Pro for educational purposes. However, I don't want this to be permanent. I've tried to partition the hard drive and install both OSs but I have not ...
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1answer
21 views

Bootcamp partition not showing up after OS partition resize

I have a MacBookPro mid 2012 with OSX El Căpitan and yesterday I resized my OSX partition in order to make more room for the bootcamp partition (Win. 8.1). After I decreased the OSX partition I tried ...
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0answers
17 views

Cannot boot into successful winclone restored windows

I restored a winclone image containing Windows 10 to a new partition on my machine. Everything went well, but after the process completed, I was not able to boot into the restored Windows. If I select ...
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2answers
3k views

Cannot delete windows partition from mac

I want to remove Windows from Mac and the I know the simple way is through the Boot Camp Assistant. But that doesn't work for me as follows: However, when I try to merge the partition of windows ...
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0answers
17 views

Why is Bootcamp showing Win 7 system data instead of my Win 8.1 install when accessed in OS X 10.11.5?

Recently rebuilt my late 2013 iMac 27" hard drive after bad RAM corrupted it. It now has a fresh install of OS X 10.11.5, as well as a new Bootcamp partition with Windows 8.1 Pro. Despite having ...
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2answers
5k views

Repartition hard drive with bootcamp on it

I currently have this setup on my Mac- OS X Mavericks 10.9.3, Windows (bootcamp) and a Recovery HD. My question is can I repartition my hard drive to have another partition, using disk utility (resize ...
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2answers
41 views

How to create Recovery Partition for new SSD after restore via SuperDuper

I recently installed a new SSD on my old MacBook Pro - replacing the HDD. It's running El Capitan. After installing the new drive, I booted from my SuperDuper clone, formatted the new internal SSD to ...
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2answers
2k 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 ...
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2answers
26 views

Can't create a new partition on an external drive's free space

I have a USB2, 500GB external hard drive that I use for Time Machine backups. In order to test something, I created a new partition in the drive, roughly 30GB in size. Once I was done with my tests, I ...
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2answers
3k views

Can't Delete Partition

I created a partition to run Snow Leopard on my computer running El Capitan and no longer need it. I allocated 20GB to that partition. Here's what I've done. I first go into Disk Utility, select my ...
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2answers
90 views

Unable to recover disk space Mac OS X EI Capitan

I deleted one partition on my mac and now I am not able to recover that space. diskutil list shows below output. Here I see total space is 500 GB and size of Yosemite(installed El Capitan on it) is ...
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1answer
1k views

CoreStorageFamily::unlockVEKs() failed to unwrap the vek, status = e00002bc

I have a filevault2 disk with two partition. One is the boot partition, the other contains data, both are encrypted. Today, after installing the latest 10.8 update (10.8.4 I guess), the computer ...
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2answers
2k views

Repair MBR (Windows 10) from OS X

I've messed up my system yesterday. On my iMac I have installed OS X and Windows 10 using Boot Camp Assistant. The Windows MBR is damaged and I can't start it anymore. I get a black screen with the ...
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0answers
15 views

Time Machine Backups - Very Slow and inaccurate size

So about 1 1/2 years ago, I bought a WD My Passport for Mac as my Time Machine backup disk and a place to store files. When the drive gets around 5 or so backups, I still have plenty of free space ...
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3answers
2k views

How can I reformat an HDD to HFS+ in Ubuntu (without using a Mac)?

I have attached an HFS+ hard drive with Mac OS X installed to an Ubuntu machine because while booting the Mac shows a blinking folder with a question mark. I searched Google and the results say that ...
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1answer
49 views

How to install windows 10 using bootcamp?(Hard disk problems)

Here's what I did while installing windows 10 using bootcamp.Firstly,i modified the Info.plist file of bootcamp in order to create a live usb(since I have a MBP with an optical drive).It worked.While ...
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4answers
7k views

Boot Camp Assistant crashes when partitioning drive (exception: EXC_BAD_ACCESS)

I run Mountain Lion, a fresh install, brand new Macbook Pro. HD: Samsung 840 Pro 512 GB SSD. When trying to go through Boot Camp Assistant / Setup it works fine until it wants to repartition my drive....
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1answer
106 views

A new ExFAT partition prevents bootcamp from starting windows

I'm trying to create a shared partition that I can use from both Windows and OS X. I made a new partition, but if I make it FAT or ExFAT Windows does not start. I get Error code: 0xc000000e. I assume ...
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2answers
7k views

diskutil coreStorage in Lion fails to create a concatenated LVG, error -69886

I would like to create a logical volume group (LVG) with two physical disks. Issue The command: diskutil coreStorage create LVGNAME /dev/disk1 /dev/disk2 returns: Started CoreStorage ...
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1answer
37 views

How to repair a drive after accidentally changing the partition scheme?

I was using the Boot Camp. Somehow I managed to change the GPT partition scheme on my external hard drive to a MBR partition scheme. Below is the output from the command sudo gpt -r -vvv show /dev/...
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7 views

Move/resize Mac partition? [duplicate]

I have 2 partitions (2.6gb, and 150gb) on one of my (3gb) drives. It had 3, but I removed one that wasn't used. Disk Utility should allow me to expand the 'lower' (150gb) partition into the free ...
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2answers
4k views

How to fix messed-up MacBook disk partition table?

I have broken the disk of my Mac doing partitions with gparted. Now, nothing boots (except pendrives) and the OS X Rescue Disk recognizes the disk as Virtual Whole Disk. Nothing works, repairing or ...
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1answer
44 views

Wiping Entire SSD for clean install of OS X

I want to clean install a completely fresh copy of OS X El Capitan on my mac. I have a recovery USB that I will make using the Install OS X El Capitan.app at the time of install. I have a question ...
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1answer
29 views

How to repair bootcamp after partitioning for triple boot

I already had El Capitan and Windows running smoothly. I needed to add a partition so I could triple boot into Ubuntu. OS X and Ubuntu both work perfectly now but my Boot Camp side seems to have ...
29
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10answers
123k views

Unable to Resize Partitions

I have recently created a partition on my macbook air running OS X 10.9, and this was to run install another OS instance (Yes, OS X 10.10 Yosemite, but that is an aside to the query I have) on it. I ...
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0answers
5 views

Cannot make a new partition out of empty disk space

El Capitain on a Macbook Pro 2012. I have more than 100GB of empty (unpartitioned) space on the main hair drive but the Disk Utility does not allow me to partition it. All the controls (partition name ...
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29 views

Lost access to partition in a Fusion Drive Mac OS 10.11.5

Lost access to the boot drive with name Mac Mini, Logical Volume A6452696-4CBC-4909-81C4-9B636940587A, size 1.1 TB Mac OS X El Capitan 10.11.5 Can't mount it, can't delete the volume in Disk Utility ...
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1answer
7k 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 ...
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0answers
11 views

Macintosh HD partition only 90gb

I was trying to delete my Windows 10 partition but there was an error with bootcamp saying that I couldn't delete the partition. I booted into single user mode and typed the command /sbin/fsck -fy ...
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2answers
4k views

How do I pass the following error message in the Boot Camp Assistant: “Please format the USB drive as single FAT partition.”?

I am running the Boot Camp Assistant on El Capitan. Whenever I reach the third screen, titled "Save Windows Support Software", on which I can select an storage medium to save the Windows support ...
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1answer
13 views

Trouble With Partitions

I'm trying to download an update for a program I use frequently. The program can only run on a non-case sensitive file system, so it can't run on my main partition. I partitioned a second drive that ...
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0answers
12 views

WD Passport USB 3 Drive HSF Journaled is recognised but the drive won’t mount

I accidentally ran Recovery Disk Assistant on my USB HD .Then the Hard drive stopped mounting or showing up in Disk Utility . It showed up in terminal though On Googling i found gdisk to be the ...
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2answers
2k views

Minimum Space for Boot Camp Windows 8.1

I have a Macbook Pro 2014 13-inch 128 GB and I want to install Windows 8.1 and Visual Studio 2013 Community via Boot Camp. I am Mac user and use my Mac for iOS development. Now I have to learn Windows ...
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0answers
13 views

Cannot expand Macintosh HD after deleting Linux partition

I recently deleted an Ubuntu (ext4) partition on my MacBookPro11,2 in order to reexpand my OS X partition to take up the whole drive again. This is how my partition table looks like at the moment: ...
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2answers
53 views

Triple booting a modern Macbook (early 2015) with Bootcamp in EFI mode

So I need to have Windows 10, Linux and OSX on my Macbook pro early 2015 along with a shared data partition. There are several articles on the internet that say Boot Camp only works in so called "...
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1answer
37 views

Can the identifier of a partition be changed without modifying the partition?

Currently when I try to use BootCamp Assistant on 10.11.5 it gives me the error "The startup disk cannot be partitioned or restored to a single partition." My drive only contains the necessary ...
12
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2answers
167k 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, and 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....
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19 views

How to fix Toshiba external hard drive with missing EFi system partition?

I plugged my sister's Toshiba hard drive into our TV. After I unplugged it and plugged in back to our computer it says that the disk cannot be read so I tried to repair it using the Disk Utility on ...
0
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1answer
4k views

How to use “diskutil corestorage revert lvuuid” on Yosemite if disk says it is not reversible?

I would like to make a partition for Linux. Here's what diskutil coreStorage list gets me (identifiers omitted): CoreStorage logical volume groups (1 found) | +-- Logical Volume Group ==========...
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1answer
72 views

BOOTCAMP no longer listed as Device in Finder, but can boot into it on startup

How can I get BOOTCAMP to be listed under Devices in Finder so that I can go into it and view the files there? I can boot into BOOTCAMP as normal on startup but in OS X, Finder does not list BOOTCAMP....
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3answers
8k views

Create Windows 10 installer USB without bootcamp

I have recently wiped my hard drive and partitioned my hard drive like this: /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: ...
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1answer
25 views

Cannot resize Macintosh HD using (supposedly) available free space

I partitioned my hard drive in order to install Ubuntu, but I now would like to reclaim that space and add it back to my Macintosh HD. I managed to delete the Linux Filesystem and Swap, and Disk ...
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0answers
27 views

Bootcamp and Windows Recovery Partition

Currently I am running Windows 10 on my MBP with bootcamp. In OS X, in disk utility, there is an "Untitled" partition of ~ 450MB. Upon closer inspection using disk management in Windows and the "...
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2answers
3k views

EFI system partition repair

I'm having a problem with the internal SSD on one of my Macs running 10.10. It was working fine when I was browsing the web one day and then suddenly froze with the spinning beachball; I couldn't ...
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1answer
46 views

Windows 10 Bootcamp Partition Unseen By OS X

I've look around here and Apple's support community, but can't find my exact issue. I recently reinstalled Windows 10 to my MacBook Pro (Mid 2012), added a partition to start on installing Linux, and ...