Creating a new disk formatting scheme or altering an existing scheme

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6k views

how do I “un-partition” my MACINTOSH HD into one big hard drive?

So I was derping around on my computer (it has a 250 gigabyte hard drive) and thought,"hmm I wonder what happens if I partition off 75 gigs of this". believe it or not, it partitioned off 75 gigabytes ...
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0answers
44 views

Partition failed performing a fresh installation

I'm trying to partition a samsung ssd and want to perform a fresh OS X snow leopard install from dvd. When I try to partition the disk in diskutil I get: Partition failed POSIX reports: The ...
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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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3answers
1k views

Unable to shrink a partition in osx 10.10

Hi, I installed windows using bootcamp, but i made the mistake to make the bootcamp only 20gb, so i want to expand it. I found a way to do so, but firstly i need to shrink my other partition - ...
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2answers
239 views

Why can't I delete the second partition

So I was playing around with Disk Utility today. I created a second partition. Format is Free Space. How do I undo this? As in, I want to have just one primary partition "Macintosh HD" I've tried: ...
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0answers
923 views

Deleted all Mac OS X internal hard drive partitions

I booted to a live Ubuntu USB, wanting to delete partitions on an SD card, and ended up deleting all my partitions on my MacBook Pro's internal hd. I have already tried gpart (which gets stuck at ...
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3answers
535 views

Make a Boot Camp partition totally impenetrable?

I'm thinking of setting up Boot Camp on my early 2011 MBP for gaming purposes because, obviously, VMs just don't cut it when they have to share their hardware with OS X. However, several forums I've ...
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0answers
965 views

Can't add more than 2 partitions

I'm trying to create more than 2 partitions on my mac book pro retina 2014, 256ssd but disk utility only permit me to add one partition. Last login: Tue Dec 30 17:24:32 on console Joses-MacBook-Pro:~ ...
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2answers
3k views

How to access the full capacity of hard drives larger than 2TB with OS X Yosemite?

Last week, I bought a 4TB hard drive to connect to my MacBook Pro. My quest to have access to all the 4TB on my Mac was more difficult than expected. After a lot of experimenting, I managed to create ...
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1answer
524 views

Automatic mounting of encrypted partitions on OS X

There is a well-documented method of getting Unix to automatically mount a partition on Mac OS X, namely adding something like this to /etc/fstab: UUID=C92FFDDD-5E09-34ED-A10D-914EA92EA888 ...
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0answers
378 views

Help with resizing hard drive after failed Boot Camp

The other day I tried to install Windows 8.1 on my iMac (Mid-2011, 21.5 inch) running OS X Yosemite 10.10.1. The process froze halfway through, resulting in me losing 100 GB (which was suppose to be ...
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0answers
66 views

I cannot open a Partition of a Harddrive when Shared

I've partitioned 0.75TB of external harddrive space for photo backups, which is shared on the network with a PC. However when shared I am unable to open the folder in Finder, as it will hang for 2 ...
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1answer
167 views

How to unload a disk in mac os x Mavericks so that you can partition? (failed to unload disk)

I want to expand my startup disk space from 25gb to 40gb using this guide: http://blog.kyodium.net/2010/11/increase-disk-and-partition-size-in.html But if I do umount /dev/disk0s2 as the article ...
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3answers
2k views

Lost partitions after a botched Windows install attempt via Bootcamp

I tried to install Windows 8 using the bootcamp assistant, but when I got to this screen, The BOOTCAMP partition created by bootcamp wouldn't accept the windows install. Meaning, I reformatted it, ...
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1answer
5k views

How do I convert from Case-Insensitive to case-sensitive in 10.8

I just got a new (well refurbished) MacBook Pro running 10.8.3. I am a programmer, so I have need of a case-sensitive filesystem. It is fresh and I am reluctant to upgrade it or do much with it until ...
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0answers
170 views

Can I keep my Boot Camp partition when moving to a larger hard drive?

I just bought a 512 GB hard drive to replace my 250 GB hard drive, which currently has a Boot Camp partition (pretty vanilla, just running a standard Windows 7 install). I was planning to just clone ...
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1answer
376 views

Two different USB 3 HDD docks - disk partitioned on one not usable on the other

I have two different 3TB SATA hard disks: a Toshiba DT01ACA300 a Seagate ST3000DM001. I also have access to two different USB 3 HDD docks: a Connectland DOCK-CNL-YJK3519-V3+ES a Focus SATA + IDE ...
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1answer
193 views

Interesting partition Map with missing HD space

I have the latest generation Macbook Pro running Yosemite, I bought this computer used I don't know if the last person attempted to install linux or what the story is but I believe my partition map is ...
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1answer
585 views

Can not reinstall Windows7 (using Boot camp) after i've removed Bootcamp partition via Disk Utility

I've removed Windows partition (might be label as Bootcamp) using Disk Utility. and after that i found that i made some mistake because in actually i should remove it via Bootcamp Assistant. What's ...
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1answer
835 views

OSX Yosemite can't resize partitions?

A few weeks ago I installed OS X yosemite.I did it on the standard partition, but I had a dual-boot with ubuntu. I realised that the ubuntu boot was gone so I tried to redo it. But in disk utility, ...
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0answers
9k views

Restoring Missing Recovery Partition on Yosemite [closed]

Thought this might be of help to those who have cloned a Yosemite hard drive but are now missing the Recovery Partition. To restore the recovery partition on a Yosemite install, you’ll need a few ...
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1answer
192 views

Restore a lost partition from degraded software mirror RAID

I used to store my valuable files on Apple software RAID (mirror). Recently one disk has failed and the mirror became degraded. I rebuilt the mirror using new drive, following this guide, but seems ...
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1answer
479 views

“This is a startup partition. You can't erase it” On Disk Utility

I want to expand my Windows partition. I saw all the tutorials on youtube and they said to drag the drive on the corner. However, the Disk partitions doesn't have a drive for me to drag and said ...
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1answer
4k views

"You can't resize the partition on this disk because it uses the Master Boot Record partition scheme [duplicate]

I am trying to get rid of one of the volume ("mountain Lion", the second from the top) of the partition of an external hard-drive. In disk utility I get what you can see in the pic, namely it does not ...
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3answers
323 views

Partition problem after HDD to SSD swap

Recently decided to replace my nearly full 500GB HDD with a 1TB SSD to breathe some new life into my mid-2010 Macbook Pro. I used a toaster-style drive cloner (Dyconn Dubbler) to do a sector by sector ...
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0answers
169 views

Macbook Pro OS X 10.9 Partition problem

So I bought a MacBook Pro mid-2009 with Mavericks installed (post-leasing) and this is my first MacBook. The HD was partitioned in three partitions C, D, E - I didn't want that, so I read a little, ...
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2answers
867 views

Boot camp no osx partition

So some time ago i used boot camp to install Windows 8 pro. Now i want to switch back to my mac/osx but there is no osx partition Screenshot of boot camp on windows: (Ingore the langauge, it's in ...
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3answers
8k views

Unable to Partition a new Macbook Pro

As a brand new Mac user this might be my naivety or an issue with the OS. I bought a new Macbook Pro today and wish to partition the disk to allow Windows to be installed and Linux too. I was ...
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5answers
2k views

Is there any way to partition the SSD portion of a Fusion Drive?

I'm looking at my next computer and am debating on whether or not to invest in a Fusion Drive. I'll be using Windows heavily on it though, and would like to take advantage of the SSD on both operating ...
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1answer
89 views

How can I reclaim the partition's space from this shrunk volume?

I've already reverted the CoreStorage volume. And I've resized my "Macintosh HD" volume (by dragging it) and want to increase the size of my "Yosemite" volume. How do I reclaim the space (in grey) ...
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1answer
208 views

Do I have a Recovery HD?

I replaced my MBPs HDD with an SSD and put the HDD in the optical bay. Since then, I was missing the Recovery HD partition. That was still on Lion Now I have upgraded to Yosemite, and running ...
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1answer
395 views

Can't partition SDD with odd error

Whenever I try to resize my OSX partition on my SDD from 251GB to 210GB, I get this error: Couldn’t modify partition map because file system verification failed. I've tried Booting into ...
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1answer
4k views

Disk Utility won't let me create or resize partitions

My MacBook Pro 13" Late 2011 is running Yosemite. I am trying to install a Linux distribution on a partition of my hard drive. I used Disk Utility to resize the main partition on my hard drive and it ...
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4answers
18k views

What is the minimum partition size for Mac OS 10.10 Yosemite?

I'm about to set up a Mac mini to dual boot Mavericks and Yosemite for software development purposes. What's the recommended minimum size of a Yosemite partition?
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1answer
768 views

Repairing a Partition that doesn't show up in Disk Utility

I have a friend's flash drive that has been acting very strange. I am able to get the Sandisk factory partition that is 64 MB to show up, but not the actual 8GB partition with all of his files. ...
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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
933 views

Booting from Windows USB Key Overwrote EFI - Mac No Longer Boots

I'm using a macbook pro running Yosemite. I was trying to create installation media to install linux on an SD card, and I used a USB key that had a bootable windows installation on it. I thought I had ...
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1answer
1k views

Incorrect free disk space on SSD after cloning Yosemite partition because of corrupt “.Trashes” folder

I replaced the Superdrive of my iMac with an SSD. Next, I trimmed down the partition of my existing HDD (2TB) as much as possible using Disk utility. This resulted in a 140GB partition. Then I used ...
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5answers
36k views

Resizing or expanding a CoreStorage volume

I bought a new SSD with 750 GB and made two partitions: 600 GB and 150 GB. The smaller one was thought to be a Bootcamp partition one day, but to date it was just another unused partition. When I ...
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0answers
7k 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 ...
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1answer
293 views

Why is my Partition a folder?

I've set up a iMac12,1 with Yosemite (fresh) on a second partition. Then I've formatted my first partition (after i migrated my data from my old installation to my Yosemite installation on the 2nd ...
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2answers
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 ...
2
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1answer
6k views

Create a partition on SD card for ext4 filesystem

I've got an SD card and want to create a partition on it for the ext4 fs. The partition must start after 1MB. This 1MB will be used for a bootloader (u-boot). I'm doing this on OS X Yosemite. Here's ...
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1answer
255 views

How Do I Recover Formatted Mac hfs+ Partition?

I was installing Win8 on a Mac where I got the error that I can because of GPT disk I dont know what MAC I have but the Mainboard is number is Apple Mac 942859f58194171B. I tried formatting the ...
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2answers
199 views

How to prevent second OS X partition from seeing apps in the other partition?

I have two partitions set up on my MacBook and I'm having issues when installing software on the new partition as it says it is already installed. The application is installed on the other partition ...
2
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0answers
666 views

Unable to delete a partition in Yosemite

When I was beta testing Yosemite I had installed the beta version in a partition on my disk. Now that I have upgraded my computer to Yosemite I would like to delete the beta testing partition. ...
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0answers
37 views

I have a free space in my HD. I can't use it or modify it. I

Whenever I click apply after changing the options in disk utility, nothing happens. I can't also find the free space partition using terminal. What should I do about this?
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1answer
8k views

Resizing dual boot partitions in Yosemite

I have a dual boot Macbook Air with Yosemite and Ubuntu. I would like more space on my Ubuntu partition and need to therefore reduce the size of the Mac partition. I assume this will cause some damage ...
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2answers
511 views

Should I defrag my SSD before creating a partition for Boot Camp?

I have a 500GB SSD in my MacBook Pro. I have been using my laptop for over three years - and it was migrated using Migration Assistant from a previous laptop that I had been using for five years ...
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0answers
230 views

Unable to utilize “Free Space” partition

On my SSD disk I have one partition for Mac OS X Yosemite and one partition for Windows 8.1. I needed more space on my Mac OS partition and therefore a decreased the size of the Windows partition from ...