Creating a new disk formatting scheme or altering an existing scheme

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Recovery of Deleted Partition That Has Been Partially Overwritten

I refer to How to recover a deleted/replaced HFS+ partition from external drive?, which provides an easy way to recover partitions that have been deleted but are still intact. I have a harddrive ...
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1answer
44 views

Create new partition from brand new MacBook Air

I just purchased a macbook air, and when opening Disk Utility, I see the following: 251 GB Apple - Macintosh HD I want to have a 10GB partition besides the current one, which will have the format: ...
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11 views

how to expand bootcamp boot partition to previously existed NTFS data partition

Some time ago I've partitioned my disk using this scheme: shrinked OS X partition, created NTFS data partition for Windows, then installed Windows on Bootcamp partition. Recently I installed ...
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1answer
464 views

Bootcamp not working after partitioning Macintosh HD

I installed Windows 7 using bootcamp on my Early 2011 MBP. I gave 130GB to Win7 and rest to Mac HD. Once all was done, I created a new partition within Mac HD. The partition was created successfully ...
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16 views

CentOS will not install on my Mac

I am trying to install CentOS on another partition, and It will install, but every time, I get a GRUB HARD DISK ERROR. Here are the steps I took: •Resized Mac OSX disk and gave 20 gigabytes of free ...
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1answer
689 views

MacPro Hard Drive 3 TB or Larger formatted to Logical Volume Group by Disk Utility

I have an Intel MacPro in which I recently installed a new internal 3TB hard disk. I attempted to format it in Disk Utility using the standard GUID partition map and encountered a strange problem. ...
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28 views

Configuring SSD over-provisioning on Mac OSX

I'm in early investigation stages of adding a SSD drive to my MacPro. Fragmentation problems can lead to serious performance problems on an SSD. There are a couple answers to this problem: TRIM - ...
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1answer
7k 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 ...
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1answer
11k views

Black screen when installing Boot Camp?

I recently did a complete wipe of my late 2009 MBP and restore using a Time Machine backup, so I would have uninterupted space at the end of the drive for creating a Boot Camp partition. The Boot Camp ...
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0answers
17 views

What to do if repairing one disk made the other unrecognized?

Originally I had two drives, an HDD and an SSD (my boot drive). The HDD had a 100gb partition on it that used to have windows installed on it, but that partition got locked and became unusable. When I ...
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1answer
552 views

Bootcamp and Macbook Pro and TrueCrypt

I am using Bootcamp on my Macbook Pro and have Windows 7 installed. Unfortunately, due to the changing nature of my work, I need to switch to full time Windows, and encrypt my laptop. I'm going to ...
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2answers
46k 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 ...
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32 views

How can I fix GPT/MBR partition setup to Load Windows?

Ok so I had OS X Mountain lion and Parallels everything worked great. Then I portioned my hard drive to create an extra space for backups etc and with that I probably messed up my Windows. They do not ...
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2answers
1k views

How can I attach a disk to existing ZFS zpool mirror with Ubuntu and ZEVO?

Is it possible to attach a third hdd to a already created mirror consisting of two hdds with ZEVO? Ubuntu I run an Ubuntu Virtual Machine with native ZFS support. When I attach the third hdd it ...
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38 views

Reclaim unallocated disk space on macbook pro?

I had portioned my hard drive into two (mac and Windows). Later I portioned the primary (mac) into two but figure my Windows were not loading so I changed it back into one. The problem is there is ...
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2answers
2k views

How to Install Windows 8.1 on Haswell Mac?

I have a Haswell retina MBP, but following the installation process with Bootcamp Assistant v.5.1.1 results in an error when Windows attempts to install. Are there any guides available that walks one ...
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1answer
2k 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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47 views

Corrupted hybrid GPT disk and possible fixes

I have a 17" Mac Book Pro (Late 2011) which have dual boot Windows 8.1 installation via Bootcamp along MacOSX. Prior to Mavericks upgrade I had this disk layout EFI Machintosh (~115 GB) Bootcamp ...
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2answers
2k views

Can't partition startup disk in Mavericks for Boot Camp

I recently upgraded my computer to Mavericks (I believe I have the latest version, 10.9) and I've been trying for 2 days now to install Windows via Boot Camp on my computer, but it always fails at the ...
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2answers
34 views

How to restore a deleted HFS+ partition table?

I have an external 2TB hard drive with one HFS+ partition, and accidentally dd'ed over the first ~500 MB of it. I have carelessly placed some new partitions in an attempt to repair it, because I had ...
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0answers
53 views

Boot Camp Assistant can't be used since disk is not journaled even though it is

I'm trying to install Win7 onto my mid-2010 iMac using Bootcamp. After starting Bootcamp I click "Continue" and get this message: Boot Camp Assistant cannot be used. The disk is not ...
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2answers
3k 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 ...
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1answer
151 views

Non-Winclone Boot Camp backup solution

I have an 11,3 i7 iMac, from around 2010. I want to upgrade to Mavericks and do a clean install of both Mavericks and Windows 7 in Boot Camp - reformat the internal HD and repartition. I need a ...
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2answers
1k 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 ...
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1answer
39 views

This disk is your os x startup disk and appears to have been partitioned by another utility

I had Windows 7 installed via Bootcamp but I messed things up when I tried to install Ubuntu as a third OS. Now my goal is to go back to OS X and Windows 7/8.1 dual boot. However, when I go to Boot ...
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7answers
6k views

Partitioning secondary internal hard drive failure

Looks like my 2nd HDD became a brick. I tried to partition it via Disk Utilities/booted from recovery partition/diskutil to no luck! I got vague/strange errors such as: unable to unmount, or: ...
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3answers
5k views

How do you install and use a Linux partition on Mavericks?

As a just-for-fun type of experiment, I was wanting to install Linux on an external drive that I own and boot it up on my 2007 iMac desktop. I know there are a plethora of guides out there on how to ...
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2answers
34 views

Backing up OSX and bootcamp for a new drive

I'm getting a new larger size SSD for my MBP and I want to transfer my existing OSX and bootcamp partitions onto it... In preperation, iI've used bootable USB CloneZilla to clone everything onto an ...
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8 views

XServe 10.6.8 with Fusion R800 Raid. Raid shows as fully functional, but Xserve doesn't see partition

I have a Sonnet Fusion R800 RAID array with 8x3TB drives in it. The unit recently had a strange issue with the power supply that has since been addressed. Once the unit was able to power back on, the ...
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1answer
87 views

Can both Mac OS and Windows (via Bootcamp) agree on a unique dropbox folder location?

I'm planning to install Windows 8 via Bootcamp. I want to know if it is possible to make a third partition to hold my dropbox folder for my both Mac and Windows dropbox instances? & If possible, ...
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2answers
168 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 ...
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1answer
3k views

Lost Windows after repartitioning with Disk Utility

I've just re-partitioned my hard-drive using Disk Utility. I shrank my Mac OS X partition and created a new one with the available space. However, after rebooting, the option to start under Windows is ...
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1answer
547 views

How can I add an HFS+ partition to an MBR-partitioned external drive

I have a 1Tb external drive that currently has two partitions - 64 Gb NTFS 524 Gb ext2 The remaining 414Gb is unused and shows as "Free Space" on the Mac's Disk Utility. I'd like to take 250Gb ...
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4answers
14k views

How can I get an unreadable Flash Drive to work?

I got this pretty cool flash drive as a gift and I can't seem to use it. Every time I plug it in, a pop up comes up that says: The disk you inserted was not readable by this computer. I opened up ...
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1answer
708 views

How do I copy files from Mac on Windows Partition to Mac Partition?

So my mac partition crashed... I've tried to repair disk, fsck, reinstall OS - Everything on every list of I could find on Google, and nothing worked. So I have a back-up of most of my files from ...
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3answers
9k views

Can't read my Windows (Boot Camp) partition from OS X

I have a Boot Camp problem. Both OSes boot correctly, but when I'm in OS X, I can't access my Windows partition and vice versa. I know that I can't write, but it should be able to read. But I can't ...
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2answers
52 views

Repair or reinstall Mac partition

I have a hard drive that is having problems on a Mac that doesn't use Time Machine or another complete backup system. I get this error when trying to repair the disk: Error: Disk Utility can’t ...
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1answer
90 views

Can I have two Time Machine partitions on one hard disk drive?

I know that someone can use a partition on a hard disk drive for Time Machine, but is it possible to specify more than one partition on a single drive for this purpose? The scenario: My partner and ...
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66 views

Compressed windows boot manager on dual boot Macbook and windows 7

I have never posted here before so I hope this is the right place to ask this question. So I'm helping my friend with his computer right now, I should mention that I am not a user of OS X on a ...
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1answer
107 views

How to delete partition disk0s4?

A while ago, I dual booted with ubuntu linux and followed a tutorial on youtube to do so, but later I wanted all of my hard drive to be for osx, so I deleted the ubuntu partition, but now I am left ...
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0answers
50 views

Oops, I broke my MBR, what do I do?

I installed Mavericks a couple weeks ago and discovered to my dismay that last night, I couldn't boot into my windows install via bootcamp. I'd encountered this problem before, and without entirely ...
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2answers
110 views

Cant remove windows partition from mac(not BOOTCAMP)

I have a windows partition(not a bootcamp one) and would like to remove it.This was obviously not possible with bootcamp.I tried using Disk Utility but all buttons there are inactive. I have ...
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0answers
22 views

What should I do to restore my computer's hard drive to how it was before I partitioned it? (and do I need to?)

For a few months, I used the hard drive on my iMac to do Time Machine backups for my MacBook until I got a Time Capsule. Since Time Machine refused to back up directly to the iMac's HD, I partitioned ...
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1answer
25 views

Install softwares on other partitions

I have partitioned my HD in three parts, system, work and private. I was trying to install R in work volume but it failed because it could find OS? So is it necessary to install all SWs on system, or ...
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1answer
1k views

Couldn't Modify Partition Map using external disk

Seems the most common relationship to this error is using Windows on a separate partition. Here is my problem. I have a 1 TB external disk that was used half for Time Machine and half for general ...
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116 views

Remove “Windows” Entry from Mac Boot Loader

Background A while back, I installed Windows 8 on my MacBook Air (mid 2013 model) using Bootcamp. It never really worked, (it would freeze all the time, the WiFi would cut in and out, etc.) so I got ...
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46 views

Efi Boot appears on BootCamp page

I'm new in this forum and I hope someone has an answer for my issue. Since yesterday my mac-book pro won't boot in Os X I have boot-camp on it If I turn on normally the apple logo, loading circle ...
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3answers
104 views

Can I run Lion in a virtual machine under Mavericks?

I've just realised I can't install previous osx partitions with Lion on an iMac 2013. Therefore I would like to try to use Lion in a virtual machine. I need it to use xCode 3. Am I going to have ...
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0answers
27 views

Install Lion partition on the latest iMac

I tried to create 3 partitions, one for the current OSX Mavericks, one for Lion and one for the installation dmg, but it seems that the Fusion drive doesn't allow me to create more than 2 partitions. ...
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2answers
147 views

Boot Camp will not allow removing Windows 8 partition

I've used Boot Camp to install Windows 8 on my Air some time ago and I was trying to remove the windows partition to restore some space. Except Boot Camp gives me a warning saying "The startup disk ...