Creating a new disk formatting scheme or altering an existing scheme

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How can I hide a partition (or prevent it from mounting)?

How can I hide a partition (or prevent it from mounting)? I want an effect similar to the recovery partition: it's completely undetectable outside of Disk Utility/the boot menu.
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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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0answers
478 views

Deleted Mac OS X boot image but can still access files via Boot Camp Windows

Ok, I know I completely messed up here and it's all my fault, but moving past that -- can anyone help me fix this situation? I used Boot Camp to install Windows 7 on my MacBook the other day. Then, ...
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3answers
1k views

Can't extend Macintosh HD partition after removing Linux

I toyed around with Linux, and after discovering that the offical Linux NVidia drivers doesn't have EFI support which makes it impossible to make it work optimally on my system (bummer), I wanted to ...
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2answers
1k views

Fix fusion drive partition mess from bootcamp assistant

I have a self made fusion drive on a 2009 iMac using a 256gb ssd and a 3tb hard drive. After the 10.8.3 update yesterday I tried to create a bootcamp partition but unfortunately it failed after hours. ...
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1answer
1k views

Can a Time Machine drive have several partitions, or does Time Machine need the whole HDD to itself?

Is it possible to partition and external drive an use only one of the partitions for a Time Machine backup? Or does Time Machine need its dedicated hard drive? (I've never used Time Machine before.) ...
2
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1answer
225 views

FreeBSD Install DVD corrupted my Mac OS X harddisk

Recently, I have tried a FreeBSD 7.4 i386 Install DVD, just to see some screens of FreeBSD on my Mac mini Intel 2006. I was going to see (to remember) just several dialog screen of and perhaps I would ...
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1answer
533 views

Erasing partition doesn't give me free diskspace

I'm using a Macbook Air and until today I had two partitions on it (not counting the restore partition). I had my OSX partition and an Ubuntu partition. As I don't use Ubuntu anymore, I decided to ...
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1answer
538 views

BootCamp partition disappeared

Running Macbook Pro with snow leopard, I partitioned with bootcamp assistant to install dual boot between MacOS and windows 7. However, now it shows that my Mac Hard Disk is 499 GB, but available only ...
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2answers
2k 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
2k views

Unable to adjust partition of USB drive with Mountain Lion Disk Utility

I have a 500 GB USB drive, which I once partitioned into two parts: one encrypted—Mac OS Extended (Journaled, Encrypted), and the other not—Mac OS Extended (Journaled). Now I want to change the ...
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1answer
399 views

50% SSD Space lost issue on MBA

I have an MBA 2009, model A1304. The Hard drive system information says its an "Apple SSD SM128". But when I look at the available and total space, I have one partition 28.8GB (bootcamp) and one ...
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1answer
2k views

How to remove the use of master boot record from an external hard drive?

I have a 1TB external hard drive and I want to slice it into different partitions. When I try to do so, I get this error: can not modify external drive because it uses master boot record Is ...
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1answer
938 views

Can Macintosh HD partition be resized while a BOOTCAMP partition resides on the same physical volume?

I have a HFS-partiion, a bootcamp partition and 100GB free unpartitioned space "in between". How can I resize my Mac partition to use it? All resizing controls seem to be disabled, here's the ...
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0answers
218 views

How do I format an encrypted Integral Secure Key?

I just bought an Integral Secure Key from the Apple store but am fed up with having to use its own software just to transfer files to it as it does not appear as a normal USB drive in Finder. How can ...
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4answers
4k views

What to do when my Time Machine drive is getting disk errors?

My Time Machine drive is getting disk errors. I used Disk Utility and ran "Repair Disk" on my Time Machine partition (NOT the drive) and I got the error "Incorrect number of directory hard links" ...
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1answer
2k views

How can I modify an existing FAT partition without losing its data?

I have a 1tb hard drive. Long a go I split it it into two partitions. One I left as a Mac OS extended (journaled) with 990GB and one as FAT with 10GB. Now I would like to add about 100GB to the FAT ...
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1answer
62 views

Formatting OSX partition

I have a Macbook Pro with 3 partitions: HFS (OSX) FAT (Ubuntu) NTFS (Windows 7) and I want to format only the OSX partition and do a clean install without touching the other operating system ...
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3answers
4k 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
68 views

Time Machine and Storage

I have a 3TB external HD that works both Mac and PC for storage. I understand the "best" way to back up the Mac would be partition the external as explained here: Time Machine - can it share external ...
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1answer
625 views

Why should I observe a limit of sixteen partitions per disk with OS X?

I read things such as: Mac OS X may be unstable with more than sixteen partitions up to sixteen partitions on a external drive. Also I understand that in a sixteen-slice environment, the full ...
1
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1answer
690 views

Upgrading Snow Leopard to Mountain Lion and preserving Bootcamp partition

I have a 2010 MacPro running SL with a bootcamp partition (on the same bootdrive) containing a Windows 7 x64 installation which I use for work. I was about to upgrade the Mac to Mountain Lion but I'm ...
2
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1answer
798 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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1answer
1k views

Can't I resize my existing partition?

I tried installing Win 7 into my Mac so I can dual boot and use Win 7 but then again changed my mind about it but i have already partitioned a separate drive for windows. I deleted it and tried ...
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4answers
3k views

How to create third partition after Macintosh HD and Boot Camp partitions?

I have a mid 2009 MBP. I am going to install Boot Camp beside Snow Leopard. I would like to have a third partition, DATA, and format it FAT32, where I will keep my data files easily and safely ...
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1answer
238 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 ...
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2answers
2k 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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3answers
478 views

How to extend bootcamp partition?

When I was installing windows 7 on my mac I allocated 55GB to my bootcamp partition, I now realise that it is not enough for me. is there a way to extend it, without loosing any data and re-instaling ...
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3answers
16k views

Is it possible to install and boot Windows on a Thunderbolt drive?

I know the BIOS emulation of the EFI firmware in Macs does not support booting from FireWire or USB drives, and the EFI version of Windows doesn't seem to be compatible with Apple's EFI ...
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3answers
4k 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?
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0answers
31 views

My New Internal HD is mounted as /Volumes/hdd

I replaced my optical disk with an SSD for startup and Mountain Lion and upgraded my HDD to a larger one. I also moved my home folder to the new disk. But one thing is still bugging me. My mid-2010 ...
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3answers
1k views

Can the contents of a partition be recovered after partition table is overwritten?

I ran a command to make my external hdd bootable knowing that it was risky considering the command itself did not allow me to specify a partition to which to write. (In hindsight, I would now call ...
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1answer
654 views

Boot Camp / Partitioning Weirdness

I have a MacBook Pro, running 10.8.2. I'd like to give Windows 8 a go, using Boot Camp. Now, I've probably done a b Boot Camp install of Windows close to 10 times, on multiple Macs, but I'm stumped ...
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1answer
1k views

How can I remove the Mac recovery partition from an external drive?

My early 2011 MBP came with a 500 GB HDD, which I recently changed out for a 128 GB SSD. The old internal drive now serves as a backup drive... however... I'd love to get rid of that Recovery HD ...
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3answers
6k views

Install 2 different OS X versions on the same machine/hdd

OK, here's my situation : I am a developer needing to debug under different OS X versions I currently own 2 macs : a MacBook Pro and an iMac the iMac has Snow Leopard (10.6) on it - it came ...
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1answer
166 views

Is this fun partition mess I have made fixable on the Mac OS X side?

On a MacBook Pro, a wrong decision long time ago still causing numerous problems. In a nut shell, I run bootcamp and OS X together on the same drive and the OS X stopped booting a while ago (I was ...
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1answer
1k views

Partition one disk with 2 different filesystems

Can I partition my portable 2.5 hard disk into 2 parts and then have one part as a Mac (ext journal) partition and the other as a NTFS filesystem?
2
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1answer
822 views

Dedicated SSD/HDD to install Windows on a MacBook

So I have a Late 2008 unibody MacBook. I recently bought a caddy to replace my optical drive with so I can fit a secondary drive in the laptop. I have a 256 SSD in the main and a brand new 128 SSD to ...
3
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1answer
11k views

Create new partition in unallocated space with diskutil

I have deleted the first partition on my external HD such that it now has 100GB of free space at the beginning of the partition. I'd like to reclaim that space, but Disk Utility doesn't let me create ...
3
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1answer
1k views

Multiboot usb stick with Mountain Lion, Windows 7, lInux, Freebsd

Looking for way how to carry always an USB stick (16GB) what allow me live rescue boot for different OSes. Is possible manage multiboot USB stick with 3 or 4 operating systems: Windows 7 Mountain ...
0
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1answer
2k 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 ...
3
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1answer
4k 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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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 ...
5
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1answer
571 views

Presence of a Linux partition causes FileVault2 setup to fail

I'm currently dual booting Mountain Lion and Ubuntu 12.04 on a rMBP. Everything works fine, but enabling FileVault fails with the error message: "Some information was unavailable during an internal ...
0
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1answer
822 views

ReFit background image?

Is there a way I can set a background image in ReFit boot loader? I'd like to use my 1280X800 desktop wallpaper, is that possible?
0
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1answer
1k views

How to assign different ReFit icons for multiple Mac partitions?

I have 2 different OS X partitions on my Mac. I use ReFit to boot them. But since they're both the same OS, it shows the same icon for both of them, which isn't their disk icon that I can change. Is ...
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1answer
7k 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 ...
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2answers
3k views

Mountain Lion Installer detects hard drive damage

I downloaded and ran the Mountain Lion Installer today for my mid-2007 iMac. After rebooting and preparing to install, I receive an error message that the hard disk was damaged and the installer could ...
2
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1answer
1k views

Mountain Lion, EFI and Intel SSD Toolbox

Here's the problem: I want to do a clean install of Mountain Lion on my (custom) Intel 520 SSD inside my iMac. The first time this SSD was setup, it was done by a certified Apple Retailer. This ...
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3answers
3k views

How to partition an SSD that fails with error 69888 - couldn't unmount disk?

I erased the SSD drive in my MacBook and was reinstalling Lion when it failed about 75% through the install. Now in Disk Utility, sometimes I see the SSD drive and sometimes I boot and it's not there ...