0
votes
2answers
136 views

Cannot erase and reformat Mt Lion on Mac Book Pro

I am trying to erase and reformat my mac book pro. It has mt lion installed already. I have a usb w mt lion ready to go. When I go through the erase steps in the disk utility, the erase button ...
1
vote
1answer
2k views

Macintosh HD not showing up on disc utility

I am trying to do a clean install on my Macbook Pro 13" from 2011. Here is what I did so far: 1) Booted up on my USB Stick with Mountain Lion Installer mounted on it 2) Opened up Disc Utility and ...
1
vote
2answers
3k views

How to Erase Hard Drive Mac System (this partition can't be modified/unmount)?

I want to erase a disk (Mac system) to resize OS X Mountain Lion to the max volume but I couldn't resize it nor unmount the other disk.
0
votes
0answers
57 views

10.8.5: Resume Disk Utility after a standby

Is it possible to resume a partition resizing operation after the computer went in standby? I've (sadly, without a choice) used my girlfriend's MBA to resize a partition on a disk. I was on battery ...
1
vote
1answer
719 views

How to reformat the latest iMac?

I need to reformat my work mac. My boss bought it about a month ago, so it's one of the newer ones that didn't come with an installation disc. It's running mountain lion and has a bluetooth keyboard ...
3
votes
2answers
773 views

SSD reporting incorrect amount of free space, not due to local snapshots

I recently created a file of just over 20GB and then deleted it shortly after, however my free space did not increase at all. I am using a 2012 MacBook Air with a 128GB SSD and I've had problems ...
2
votes
1answer
180 views

Very strange partition table: Missing a sector between Main and Recovery partition

So I have been trying to get Windows 7 on my machine using no DVD or USB (I have only an ISO to work with). I used various combinations of Boot Camp, Toast Titanium, Virtualbox / VMWare, Disk Utility, ...
2
votes
1answer
3k views

Unable to read last block of the device

I'm mid way through replacing the hard drive in my MacBook Pro (mid-2009). I've created a boot disk (10.8) on a SD card which I am booting from. On trying to format the new drive with disk utility ...
1
vote
3answers
839 views

Write .iso to USB on Mountain Lion [closed]

I'm trying to create a bootable USB for Windows using Disk Utility on OS X 10.8.4. Downloaded CentOS 6 for 32-bit and tried to use Disk Utility to create a bootable USB drive. This method failed with ...
3
votes
3answers
1k views

Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...
3
votes
2answers
698 views

Encrypted/Journaled Seagate won't accept Password

I have a 2011 MacBook Pro Intel running Mountain Lion. I have a 2tb Seagate External Drive with 3 partitions: all three were set up the same way with different passwords as a person who used to live ...
0
votes
1answer
780 views

Is it safe to reformat drive during Recovery Mode install?

I've inherited an almost brand new 13" Macbook Pro Retina. I'd like wipe the hard drive clean and start with a fresh install of Mountain Lion. I've done this a million times before... but never while ...
2
votes
1answer
2k views

Disk Utility: Incorrect number of file hard links

I'm running Mountain Lion on my Mid 2009 MBP. Recently(for last few months) it's acting really slow. Simplest actions are taking forever to perform. So I verified disk using the Disk Utility and it ...
3
votes
0answers
5k views

How do I force a partition and format on a USB key in OS X Mountain Lion Disk Utility or from CLI diskutil?

I have a brand new Memorex TravelDrive 64GB USB disk which is being troublesome. It's formatted FAT16 on MBR, which is not so nice, and I'd like to put it on HFS+. I've tried to do this through ...
1
vote
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 ...
3
votes
5answers
10k views

How to resize Macintosh HD?

In my disk utilty, I have some unused space left over. I want to resize Macintosh HD to use this space. Whats the best way to resize Macintosh HD? Disk Utility won't let me resize it whether I'm ...
2
votes
3answers
268 views

Completely erased my Leopard machine from another computer, how do I install an OS on it?

I started up my computer in Target Disk Mode and erased it from a friends Mac thinking that I could then install Mountain Lion without installing Snow Leopard. Do I have any way of getting my machine ...
4
votes
1answer
3k views

How do I erase an encrypted TimeMachine drive on Mountain Lion if I've forgotten the password?

My question is similar to this question. I have a USB drive that contains an old encrypted backup. I don't remember the password and don't care about loosing the backup - I just want to be able to use ...
0
votes
1answer
653 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 ...
0
votes
1answer
460 views

How to enable “Repair disk button”?

Here what happened with me today. TimeMachine asked me whether I want to set a backup disk, I've answered yes, but then, when I've realized that in order to backup anything TimeMachine will clean the ...
4
votes
2answers
3k views

Why does OS X now think I have two partitions on my external USB drive (plus random connection issue)?

I have an external USB drive that I have plugged into a USB hub, which gets unplugged from my computer about once a day. Most of the time I remember to unmount the drive before disconnecting so that ...
3
votes
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 ...
5
votes
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 ...
1
vote
1answer
771 views

FAT16 disk refuses to mount in Mountain Lion

I've recently resumed a small OS-from-scratch-in-Assembly project I started several months ago in Lion. Part of the project involves compiling a binary file with NASM (the one that is pre-included), ...
3
votes
1answer
890 views

Is FileVault distinct from Finder's “Encrypt …” command?

I'm confused by the variety of methods for encrypting drives in Mountain Lion. There are at least four methods, FileVault in System Preferences; Finder's "Encrypt..." command; Disk Utility's "Erase" ...
2
votes
1answer
6k views

For a startup volume encrypted with Core Storage, System Preferences show that FileVault is disabled

My iMac has a SSD and a HDD. The OS is installed on the SSD. I performed a clean installation of Mountain Lion to the SSD, and cloned my SSD using a backup from my Time Capsule in OS X Recovery. ...
1
vote
4answers
6k views

How to install Mountain Lion on a disk that cannot be formatted in recovery mode?

I'm trying to do a clean install of Mountain Lion but I'm not being able to format my partition. I previously had Lion, encrypted the disk, then upgraded to Mountain Lion, then booted into recovery ...