Creating a new disk formatting scheme or altering an existing scheme

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85 views

Format usb drive into ext4 and swap partitions

I have been trying to create a model of a passive WiFi tracker by following the steps given in the following link: http://edwardkeeble.com/2014/02/passive-wifi-tracking/ One of the steps requires me ...
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18 views

OS X stopped recognizing my HFS+ Time Machine partition on my USB GPT disk

I have a 2 TB USB drive that's using GPT, but OSX (10.11.4) on my macbook pro (early 2015) stopped recognizing my HFS+ partition after I inserted a partition before it ("TESTPART"), effectively making ...
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42 views

Partition map check failed because no slices were found for SD Card

When I connected my sd card to macbook, I got the error "The disk you inserted was not readable by this computer". I ran following commands ~ diskutil list /dev/disk2 (internal, physical): #: ...
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1answer
51 views

How to restore OS X drive to factory defaults?

I turned off the Core Storage volume manager on my OS X partition (i.e. diskutil cs revert). Now my Recovery HD displays in Disk Utility and in Startup Manager. I don't like this and would like to ...
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1answer
85 views

Reformatting disk with no partition map

I have a 250GB hard drive that I tried to "burn" an ISO to (to make it bootable). Something went terribly wrong.This is what the disk looks like in Disk Utility (unmounted). When I mount it, this ...
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1answer
1k views

Cannot delete or merge old boot camp partition in El Capitan

So i've battled with this for quite some time, look up various topics with various solutions, however i have yet to succeed with merging my partitions into one. I had previously installed windows 10 ...
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1answer
201 views

How to fix bootcamp boot after removing hybrid MBR

I've updated bootcamp to Windows 10 which should support GPT with protective MBR without any hybrid tricks. I have 6 partitions on disk0 so hybrid MBR is also inconsistent with GPT and it's somewhat ...
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1answer
148 views

corestorage failure: missing disk, how to recover data?

This morning, my iMac show me the prohibit sign. After hours of struggling, I'm facing this: the Mac does not want to boot up. I have a lot of recent files to recover, but have this issue: root# ...
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18 views

How to run multiple versions of Mac OSX on my MacBook

I recently bought a Macbook 4,1 from early 2008. (as it says in system information) I need to run multiple versions of osx, like on two partitions. I currently have installed os x 10.7 and need to ...
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0answers
40 views

OS X El Capitan renames Windows volume on every boot by appending increasing numbers to the volume name

I have installed Windows on a separate hard drive on my MacBook Pro running OS X El Capitan. OS X is running on an SSD and Windows is on another physical hard drive. I named the other hard drive ...
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1answer
30 views

File types in EFI partition

In El Capitan, I mounted the EFI partition using sudo diskutil mount /dev/disk0s1 and instead of finding apps that I can run, I found .scap, .smc, .epm, and .efi files. What are these? The reason I ...
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93 views

Increasing size of boot camp partition without reinstalling windows (free)

I have installed windows 10 on mac book pro (256 gb) size of boot camp partition according to default, now is 32 gb. I would like to increase size of that until 100 gb. I found some different solution ...
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2answers
552 views

Failed bootcamp partition, now can't remove it

Tried to set up Windows 10 on my Macbook Pro 15" (Mid 2014). Running El Capitan 10.11.3. Windows refused to install (GPT partition only problem?). I followed steps elsewhere to remove and reformat the ...
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0answers
15 views

main partition 'not mounted' problem

After crashing, main partition is greyed out and 'not mounted'. Here's the detailed info on this disk: I wanted to install Ubuntu on my Macbook Pro Retina (early 2013), so I could run some specific ...
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1answer
51 views

Boot Camp problem on MacBook Pro (2015)

I installed Windows 10 with Boot Camp Assistant, but when I press the option key on boot, it shows only the Macintosh HD partition. Why is that happening? Is the BOOTCAMP partition not bootable? Note:...
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26 views

Index partition on Time Capsule and open on Startup

I recently reinstalled the OS on my MacBook Pro. All of my files are backed up on my Time Capsule. However, as my Mac is now running a zillion times faster without all the files on it, I decided not ...
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1answer
106 views

How to format a Seagate HDD to OS X Extended (Journal) with Disk Utility

I have just got a new external hard disk, the Seagate Expansion 2 TB, and I am trying to format it to work on my Mac. I was told that I had to erase the disk and format it to OS X Extended (Journal) ...
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1answer
29 views

How to automat the selection of usb disk based on size

I am trying to automate a process where teachers delete content on memory sticks with different name then put the right content back (same each time) and rename the memory stick to UDISK. I want to ...
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3answers
125 views

New SSD can't be initialized

I have an old Macbook Pro for which I bought a new SSD and replaced the HDD with the SSD. Can't go further, see below. I really don't know what to do. I could return the SSD which, finally, might ...
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1answer
41 views

How to remove a partition that fails to remove. [closed]

I failed installing Ubuntu, the remaining partitions are un-removeable, when ever I try and remove them I get operation failed. How can I resolve this issue? I need to either remove them or erase them....
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1answer
69 views

Can I use the free space on an NTFS Hard Drive to make a “Mac OS Journaled” partition to use as a backup space?

I have a 1 TB NTFS HDD which has 350GB free space, how would I format that 350GB to use it as a backup space for my MacBook? diskutil list output: /dev/disk1 (external, physical): #: ...
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2answers
4k views

How do I pass the following error message in the Boot Camp Assistant: “Please format the USB drive as single FAT partition.”?

I am running the Boot Camp Assistant on El Capitan. Whenever I reach the third screen, titled "Save Windows Support Software", on which I can select an storage medium to save the Windows support ...
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2answers
147 views

Seagate is not allowing me to make partition on MS-DOS (FAT) Or ExFAT!

I just bought an external hard drive (Seagate Backup Plus Slim 2 TB) for my Mac (Yosemite installed) for professional photography. I wanted to make partitions for both Mac and Windows, but it only ...
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132 views

Revert Apple CoreStorage volume back to Apple HFS

I have a computer that is encrypted with Symantec PGPWDE. A scripting error occurred when trying to decrypt the system and remove PGP and convert the disk to CoreStorage to prepare for using file ...
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13 views

Boot Camp says there is a partition when there isnt one

My boot camp is keeping me from using it because it says there is more than one partition (which i may or may not have made in the past). When i go into the disk utility it only shows the internal ...
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22 views

iMac partition grid screwed. Please help?

So yeah i guess i screwed up my iMac 5k retina's (late 2014) partition grid big time and i need your help. It all started yesterday when i tried to format my computer. I'm selling it tomorrow, that's ...
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189 views

Missing space in OS X El Capitan after removing a failed Boot Camp partition

I'm trying to help my girlfriend after a failed Boot Camp partition removed approx. 100 GB of visible space from her OS X volume. The main volume is encrypted with FileVault2. Partition table: [...
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1answer
59 views

Unable to partition internal disk on El Capitan

I'm trying to install Linux on my MacBook Air but seem to have fallen at the first hurdle and am unable to partition my disk. I open Disk Utility, I have ~70GB of free space and when I click ...
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3answers
261 views

Command line equivalent of Disk Utility, which is not diskutil, to obtain UUID

Following on from the answer to Can you make OSX mount just certain partitions when you connect an external HDD?, all of the sites that I have checked (CNET, OSXDaily, Apple Support community threads) ...
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1answer
164 views

El Capitan Resize VM Partition

So I have this VM in my VMware Fusion, I add 5GB of space to the HDD but then I got this message saying resize the partition: But when I login to my VM and launch Disk Utility, I am not seeing the ...
2
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1answer
36 views

Error while unpartitioning hard drive?

I've tried to install Ubuntu (and gave up), but now there's a stuck partition, of 24.22 gigabytes. The pink shows the partition. I want to unpartition it, but when I try to delete it, an error ...
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2answers
12 views

How to take backup of a partition from another partition

I have two partition one for Yosemite OS as Macintosh HD and another for El Capitan OS as El Capitan Now El-capitan part is not booting up and I have to take a data backup of El-Capitan from ...
3
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1answer
107 views

External hard drive disconnected during reformat: now will not format

Using disk utility, I was erasing and re-formatting to FAT. During that process, the usb cable was removed. Now, the hard drive will not format. When recognizing the hard drive, a window shows up ...
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1answer
164 views

Different partition configuration between gpt and fdisk

After resizing my HFS partition (to solve a case sensitive/insensitive problem) I found out my BOOTCAMP partition was no longer accessible. As I navigate the web, I found out this is a common issue ...
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1answer
43 views

Unable to resize/create partiion using gpt

I have a Mac Server running 10.10. The sole purpose of it at the moment is to take time machine backups from multiple devices. The server itself uses a Thecus NAS AFP share to store the time machine ...
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2answers
89 views

Recovering OS X partition: wrong boundaries calculated, can't mount disk0s2

I followed the strategy of Klanomath (see link) in order to recover my lost OSX (el Capitan) partition (MBR overwritten by bootcamp Windows). In this procedure you have to find the right boundaries of ...
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3answers
212 views

Recover deleted Encrypted OS X Extended volume

I accidentally formatted an external 1TB HD to FAT file system using Disk Utility in Mac OS. The disk used to be HFS+ encrypted. Encryption was done when I created the OS X Extended partition, not ...
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0answers
59 views

Can't boot to OSX after resizing the Bootcamp partition

I had set up a Bootcamp partition on my Mac, which I needed to increase in size. Something must have gone during the process because after the successfull installation of Windows I'm no longer able to ...
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1answer
1k views

How do I restore my missing partition and install Windows 7 64-bit?

I previously had a Windows 7 32-bit installed on my Mac using Boot Camp Assistant. I recently upgraded it to Windows 10 (followed Microsoft update message), but later after I saw some drivers are ...
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1answer
391 views

How can I fix Error: -69877: Couldn't open device after interrupted formatting process?

This question, possibly the same question, has been asked: Couldn't open device However, my question hopefully demonstrates a more specific scenario as the situation in which caused the error ...
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0answers
18 views

Macbook Pro Early 2011 Filesystem Corruption, Weird SATA GPT Boot Issue

For the past couple of days, I'm experiencing filesystem corruption and a really weird switch of my SATA drive numbering on an early 2011 Macbook Pro (8,2). So I've got Linux, Lion, and Bootcamp ...
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2answers
334 views

How to fix Mac hard drive partition showing as Fdsik_partition_scheme

My situation seems very similar to how to fix GUID hard drive corrupted to MBR but with enough differences that I haven't been able to put together a confident solution. I have a 3TB Toshiba drive in ...
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0answers
62 views

Cannot Repair Macintosh HD, after loading into OSX, it become a [X]

When i restart the computer and loading with the apple logo, wait for few second, and the apple icon become [x] My Mac is OSX EL Capitan (v10.11.3) I used Disk Utility "First Aid" and found that ...
2
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3answers
316 views

Missing space on Fusion Drive (partition problem)

I know this or similar problems have been discussed, but (to be honest) I can't see the trees for the wood. I tried to create a partition on my fusion drive (1TB Hd + 240 MB SSD). No partition was ...
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1answer
309 views

How can I change an NTFS Volume UUID?

I just upgraded my Mac to Mac OS X El Capitan and I wanted to update my Windows 7 to Windows 10. But, before that, I need to make a backup of my Windows partition. As I've done it before, I have a ...
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20 views

Running into bootcamp partitioning issue on MBP Late 2013

I'm trying to use the Boot Camp Assistant to partition ~60GB for a Windows 10 install on my Late 2013 15" Retina Macbook Pro with a 512GB SSD. I'm following all the steps, it takes ~1 hour to create ...
2
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1answer
126 views

How do I remove everything Parallels?

Background: Mac Pro 4.1 circa 2009, specs: OS X El Capitan Version 10.11.3 (just updated last weekend) SN - H09440CK20H 2 - 2.93 GHz Quad-core Intel Xenon processors 32 GB RAM 2 - 1 TB HD 1 - ...
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39 views

Cannot resize OS X startup parting (both diskutil and Disk Utility GUI freeze)

I'm trying to shrink my Yosemite partition and create a new one. Trouble is that the Disk Utility gets stuck "Preparing to partition disk" (same thing when run in recovery), and diskutil in a ...
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1answer
268 views

Why did an “Untitled” partition appear that uses up half the disc space and how do I get rid of it?

On a Mac OS X Server, I realized today that the 1TB disk has all of the sudden two partitions, both of them around 500GB large: 1TB APPLE HDD ST1000LM024 Macintosh HD2: Mount Point: / ...
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30 views

Recover Boot Camp partition

I have a MacBook Pro 13" 2015, I used this with OS X + Windows 10 on Boot Camp. I prepared all to remove Boot Camp and yesterday finally removed this partition using Disk Utility and Boot Camp ...