Creating a new disk formatting scheme or altering an existing scheme

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1answer
142 views

I'm not able to re-size a HD Partition to utilize all its free space, how can I fix this?

I've seen a couple of questions on the exchange that are similar to the issues I am having. But I haven't been able to get things to work referencing those issues. I am ultimately looking to install ...
1
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1answer
80 views

Free Space Won't Delete [duplicate]

I am running OSX Yosemite. I had free space on my partition, (see picture below) but now it wont delete. I change the format to Mac OS Extended (Journaled), and then when I hit the " + " button it ...
2
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1answer
9k views

diskutil shows Macintosh HD is missing (with Recovery HD occupying the entire space)

So yesterday I managed to screw up my iMac 2012 (with Fusion Drive) by installing the Mac OS X 10.10.2 update... The installation stalled and when I tried to restore from an external drive using Time ...
3
votes
1answer
244 views

Does Windows, running on latest Apple computers, see boot disk partitioned as MBR or GPT?

From my understanding, the newest apple computers boot Windows in EFI mode. Traditionally, Windows has seen the boot disk as an MBR partitioned disk. In fact, the boot disk (i.e. /dev/disk0) has aways ...
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3answers
1k views

Clear free space in Disk Utility

So I recently removed Windows 7 from my iMac, but Bootcamp didn't let me do it. I used Disk Utility instead. The old Windows 7 partition now shows up as free space. I want to reinstall Windows 7 again ...
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1answer
75 views

Can't change startup disk iMac

Here is my situation: I've only the mouse paired with my iMac because I rent the keyboard to a friend. Unfortunately the startup disk is set to a fallacious Windows partition that don't want to boot. ...
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5answers
2k views

Can not delete Free Space on iMac 5K: Partition doesn't appear in CS list

I recently tried to install a bootcamp instance of Win 8.1. The install failed for some reason (wasn't clear from the error message). This left me with an unaddressable partition. I erased that ...
4
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3answers
30k views

I think I messed up the Fusion Drive on my 1TB iMac (with BootCamp)

this is a somewhat similar post to this one (Can't create partition on free space with Disk Utility) but not quite... It started with me creating a BootCamp partition (around 145 GB) for Windows ...
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1answer
4k views

What does “EFI system partition couldn't be created” mean?

When trying to click "Repair Disk" on an external hard drive from Disk Utility, I got the following error message: ... Repairing the EFI system partition's file system Updating boot support ...
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2answers
7k views

Partition issues after deleting Core Storage Logical Volume Group. Everything prompts an unmount error. HELP!

I followed the instructions on this link (last answer) to delete the Core Storage Logical Volume Group via terminal while pressing Cmd+R during startup. These are the functions I used in terminal: ...
2
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3answers
40k views

Why I can not see mac partition under windows installed with bootcamp?

I installed a windows 7 on macbook using bootcamp. Everything looks fine, but one thing. Here is stated that "Apple’s Boot Camp driver package automatically installs an HFS+ driver for Windows, which ...
4
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1answer
9k views

Can't make more than two partitions

I want to multiboot my MacBook Pro, I'm trying to make partitions but in Disk Utility I can't make my partitions, only can divide by 2? Why? It's a normal SSD not a fusion drive (SSD+HD). Now I'm ...
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1answer
251 views

How do I resize an ex-CoreStorage volume?

I've got a Macbook Pro Retina (with the PCIe drive ‘blade’, instead of a traditional 2.5" laptop drive). I've recently upgraded the internal drive from 500GB to 1TB, and dd'd the old drive over the ...
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0answers
23 views

Create a partition with Maverick

I am not able to create a third partition with Maverick. I can't press the + button
2
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1answer
1k views

Accidently deleted some small sized partitions when installing WIndows(Bootcamp). OSX Partition wont boot

I tried to install Windows 8 into my Mac via Bootcamp. I booted into the Windows 8 Installer and had issues formatting the drive that I partitioned for the OS. Like an idiot, I deleted all of the ...
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2answers
946 views

How can I repair partition map after attempting to dual boot screwed it up?

I tried installing Kali Linux in a separate partition on my MacBook, but after installation was completed, I was unable to boot back into Mac OS (displays a prohibited sign). I think everything went ...
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0answers
746 views

WD My Book Media shows up in diskutil, but doesn't mount or show up in Disk Utility

Initially this drive was connected (via FireWire) to my wife's Mac (still running OS X 10.7), but she it would not mount any more and she asked me to look at it. After reading suggestions on-line, I ...
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0answers
902 views

Unable to partition hard drive with Yosemite (Disk Utility hangs)

I have a 2007 model Macbook Pro running Yosemite 10.10.1. My father recently upgraded my hard drive for me from the stock 320GB hdd to a hybrid 500GB hdd. He's not really a Mac user and said there ...
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3answers
5k 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 ...
0
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1answer
3k 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
236 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
900 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
534 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
957 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
2k 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 ...
1
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1answer
485 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
373 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 ...
0
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1answer
165 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, ...
0
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1answer
4k 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 ...
2
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0answers
169 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 ...
1
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1answer
374 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 ...
3
votes
1answer
190 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 ...
0
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1answer
569 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 ...
0
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1answer
827 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, ...
5
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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 ...
0
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1answer
190 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 ...
0
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1answer
472 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 ...
0
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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 ...
1
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3answers
320 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 ...
0
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0answers
168 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, ...
2
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2answers
847 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 ...
2
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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 ...
1
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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) ...
0
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1answer
207 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 ...
0
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1answer
393 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 ...