Creating a new disk formatting scheme or altering an existing scheme

learn more… | top users | synonyms

0
votes
2answers
1k views

Windows on BootCamp cannot start upon a fresh installation

I have a Windows 7 .iso I always use for BootCamp installations. It works. I have a MacBook Pro Retina 15" Mid-2014, and I have installed Windows 7 in it successfully in the past. Throughout the ...
3
votes
1answer
105 views

how to fix GUID hard drive corrupted to MBR

I am on OS X 10.9.5 with a late 2013 iMac. I have a 3TB hard drive that has an unusual problem. It is a Western Digital 3TB Red WD30EFRX. I formatted it with two partitions, both 1.5TB. One was a ...
1
vote
1answer
102 views

Install rEFInd on another partition

I recently tried to install rEFInd onto my Mac but it could not boot into the Ubuntu disk. To uninstall It I formatted my drive and reinstalled OS X along with my backup. To avoid this issue again I ...
0
votes
3answers
39 views

Can't create a partition

I'm trying to create a new partition for installing linux, but OSX won't let me. I saw this question: Unable to Resize Partitions, but my HD is not a CoreStorage Volume, so it didn't really help. ...
10
votes
4answers
14k views

Bypassing Boot Camp to install Windows using a non-standard partition scheme

My new Retina MacBook Pro is on its way, giving me time to contemplate setting it up. Good thing I got started—I had no idea how difficult it was going to be to install Windows and create an auxiliary ...
0
votes
1answer
8k views

How to merge two Mac partitions?

Recently I ran Boot Camp Assistant to install a copy of Windows 7. The "Partitioning Disk" process froze and I force quit it - I know, bad idea - and although I was left with a functioning Mac, I ...
1
vote
1answer
2k views

How could I install Boot Camp drivers to my Windows partition?

I've finally figured out how to install Windows without any stray network connection errors or invalid .iso file errors, but I've run into a bit of an issue. The Windows partition doesn't have any ...
0
votes
1answer
39 views

Why can I only have 2 partitions on my 3TB Apple Fusion Drive?

According to Apple, I can only have 2 partitions on my 3 TB Fusion Drive. I do not understand why. Techtool Pro made an eDrive, their emergency boot drive, and Apple made their Recovery HD. It ...
0
votes
0answers
14 views

HFS+ external drive missing EFI, will not mount on Mac

First off: Fear not, I have everything from this drive backed up. I'm just trying to reformat it, but I had someone else attempt it on Windows which doesn't look like it helped. I'm a novice but ...
1
vote
2answers
33 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 ...
1
vote
1answer
326 views

HFS+ invalid number of allocation blocks

Okay so a few days ago I wanted to install Ubuntu GNOME over regular Ubuntu and it gave me the option to automatically overwrite my Ubuntu installation (that I had on a separate partition from my OS X ...
1
vote
1answer
131 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 ...
14
votes
4answers
89k views

How to fix broken EFI partition?

I have an iMac running OSX Lion. I also installed bootcamp and Windows 7. During the install of Windows 7 I wasn't paying complete attention and deleted and formatted the EFI partition. I didn't ...
0
votes
1answer
16 views

Cannot Partition Disk with Disk Utility

I can't seem to partition my disk with Disk Utility or with the Terminal command (see screenshots). Something also happened to my other partition running Mavericks, where it just turned into an "empty ...
6
votes
4answers
27k views

Boot into Mac from Windows after failed Bootcamp

Don't hate on me too much for this one... I put Win8 on my Mac Mini using Bootcamp, and all was well. I switched back and forth a couple times between the two with no problems. The problem started ...
0
votes
1answer
102 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: ...
1
vote
1answer
15 views

I cannot do bootcamp but my hard disk only have machintos HD and Data

The bootcamp said that my disk cannot be partitioned or restored as single partition. I am using macbook pro 15" but idk the version but the graphic card said gt320m 256 MB and 350 GB HDD i5 do i ...
0
votes
1answer
27 views

Can't edit partitions with Disk Utility in OS X 10.10

I'm having trouble accessing about 50GB of space on my computer after a failed partitioning attempt. Before you ask, I don't know what went wrong, I just know that now, I can only turn the free space ...
0
votes
1answer
20 views

dd cloned NTFS partition not working

I have a MacBook Pro with OS X 10.10 and a Windows 7 Boot Camp install. I just bought a 64 GB flash drive that I would like to put a bootable copy of Windows on, to reestablish the hard drive as OS X ...
0
votes
2answers
4k 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 ...
2
votes
2answers
3k views

Resetting MBR on iMac

I installed Ubuntu on my iMac (partially successfully) I had rEFIT installed but it did not recognize the Ubuntu installation. I removed the partition and rEFIT and now when I attempt to install ...
1
vote
2answers
3k views

Merging partitions separated by Bootcamp

In the process of installing windows on my MacBook Pro, I managed to somehow partition the disk this way. Is there any way of merging the UNTITLED 3 segment with the Macintosh HD segment without ...
0
votes
1answer
25 views

Disk Utility not letting me Partition Disk

A bit of background before I start. I'm trying to install Ubuntu onto my Macbook Pro and so far I've stumbled into a bit of a roadblock. I've also already installed Windows 10 with Bootcamp, I'm not ...
3
votes
2answers
5k 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 ...
0
votes
1answer
72 views

I think I accidentally erased Macintosh HD?

I was trying to install OS X on my Mac that had OS X removed. I wrongly erased Macintosh HD and it changed to "Untitled". After that I restarted my Mac and it just shows an image of "?" in a folder. ...
0
votes
1answer
3k views

Can’t reboot into OS X from Boot Camp

I made a partition with Boot Camp on my wife's Macbook Pro and installed Windows, however after being installed I can not find the Boot Camp control panel. I have looked in the control panel and the ...
1
vote
1answer
22 views

Boot Camp disk can not be partitioned

I'm trying to install Windows 10 on my Mid-2012 MacBook Air running OS X 10.10.5 "Yosemite". When creating the partition, Boot Camp stops after a short while displaying that the partition can not be ...
2
votes
1answer
128 views

OSX Yosemite upgrade error: “a mismatch between the MBR and GPT partition maps…”

My MBP's HDD is half OSX and the other half is Bootcamp. While booted into OSX I decided to let Software Update install Yosemite. I left the room. Upon returning a while later I found the following ...
0
votes
0answers
60 views

Boot Camp Partition Unavailable After Windows 10 Upgrade

I have a simple problem for you today. I have been using Boot Camp with my Mac Mini for about two years and now, after upgrade from Windows 8.1 to Windows 10, the Boot Camp partition doesn't seem to ...
1
vote
1answer
53 views

How can I prevent an exFAT volume from mounting on OS X?

I have two partitions, one is HFS+ and the other is exFAT. I'm used to opening the /etc/fstab file, and inserting this line: UUID=NUMBER none hfs rw,noauto Note: The "hfs" stands for HFS+. Now I ...
3
votes
5answers
10k views

Disk Utility hangs prior to resizing partition

When trying to shrink the size of a partition, the period before the actual resizing happens (where Disk Utility says "Preparing to partition disk") hangs forever. I dug into Console to see what was ...
1
vote
4answers
8k views

Are there any advantages to partitioning a SSD on a Mac?

I have a Macbook Air with 128GB SSD. It's used to be a best practice to put the OS on a separate partition from data. Does that make any sense? What are the advantages to partitioning an SSD?
0
votes
1answer
6k views

Cannot boot into Windows after Yosemite Reinstall

When Yosemite went live to all users, I updated but a week later I wasn't happy with the performance of the mac and certain apps. So I installed the OS from scratch, I made a backup, erased the ...
3
votes
0answers
20 views

How do I resize my partition on my Mac? [duplicate]

I'm having trouble resizing my hard drive partition. Before, I was running OS X Lion in the free space above Macintosh HD 2. Now that I deleted the Lion partition, I am unable to resize Macintosh HD ...
2
votes
4answers
5k 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 ...
0
votes
1answer
27 views

Bootcamp Installation Space

I'm installing Windows via Bootcamp but during the partitioning, my MacBook Pro crashed and now after the reboot I'm seeing that I only have 15GB of free space left. I had 33GB before partitioning. ...
2
votes
2answers
2k 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 ...
0
votes
1answer
40 views

Finding lost partitions

I am resetting my sister's MBP late 2010 to factory defaults. It's all backed up. I'm reinstalling from the recovery partition currently. Before I started working on it today, it had the very ...
2
votes
1answer
30 views

Can I move Windows 7 to a larger partition with 'dd' instead of WinClone?

I have a Modbook Pro with both Win 7 and OS X installed during build; no media provided. I got fed up with all the irritations of the modbook and bought a regular Macbook Pro with a larger drive and ...
0
votes
0answers
20 views

Resized a partition on a mac and it deleted all the data on it? HELP

Ok this is a really big mess i've found myself in. My mates Mac Pro running Lion x64 needs a clean out and i offered to do it whilst he's away. I used Disk Utility to resize his 4TB Archive Drive to ...
3
votes
2answers
3k views

OS X Partition not resizable

3 weeks ago I installed Yosemite public beta onto a brand new Macbook Air which arrived with Mavericks pre-installed. To carry out the installation I created a new partition for Yosemite and so had ...
8
votes
3answers
25k views

Can't create partition on free space with Disk Utility [duplicate]

I have created new partition by selecting free space option and now I can't merge it or recreate it. I have tried to use iPartition to create a new partition on free space but it said I have no ...
0
votes
2answers
48 views

migrating partition to a 2015 MacBook Pro

I'm a developer and through the years with my MacBook Pro early 2011 I installed and configured a lot of stuff to help me in my job. I would like to buy a new MacBook pro but don't want to spend ...
1
vote
3answers
53 views

User directory taking up an additional 100GB+ of space

This is on my 2013 15" Retina MBP with the 256 SSD. Before you ask, yes, I'm including the ~/Library folder. My home directory is using ~175GB of space, which is pretty significant. I'm in a ...
1
vote
1answer
354 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 ...
0
votes
1answer
73 views

Resizing a 100GB Recovery HD Partition

Some time ago, I used BootCamp to set up a partition for Windows 7 on my MacBook Pro (13" late 2014 if it matters) so I could dual-boot. I have since removed the partition using BootCamp, but still ...
0
votes
0answers
102 views

Fix Recursive Partition (Boot Camp Windows Partition Still Detected After Deletion)

I recently deleted the Windows Partition I had on my Macbook Pro (Mid 2014) which I had installed using Boot Camp. I followed the uninstall instructions in the second section of Apple's website, here. ...
3
votes
1answer
805 views

Unable to extend my partition

I have searched through this site alot and i wasn't able to find any solutions. My situation is the following: I decided to install linux to dual boot with OSX at my 1TB fully encrypted with FV2 hard ...
6
votes
3answers
32k 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 ...
0
votes
1answer
2k 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 ...