Creating a new disk formatting scheme or altering an existing scheme

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90 views

How to recover corrupted HFS+ partition in external HD?

I've got a 1 TB SeaGate FreeAgent Drive with following partitions: 700 GB ExFAT (labelled as FREEAGENT1) 300 GB HFS+ (labelled as FREEAGENT2) While moving data from 1 to 2, it got accidentally ...
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1answer
386 views

Bootcamp: 'No Bootable Device error' after resizing partition El Capitan

I have a Macbook Pro (Retina 15 inch end 2013) with OS X El Capitan 10.11.1. I have Bootcamp on it to run Windows 7, always using it without any problem. I wanted more space on the Bootcamp partition ...
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1answer
609 views

Can't see FAT32 and NTFS external partitions on OS X El Capitan when SIP is enabled

I've installed Homebrew, FUSE for OS X and NTFS-3G. It helped to see external partitions (FAT32 and NTFS) when SIP is disabled (OS X El Capitan). But when SIP is enabled, I can't see NTFS and FAT32 ...
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1answer
320 views

BootCamp can't partition

I had a problem with my Macbook that couldn't read the internal SSD and boot OS X, but I solve it: MacBook does not mount, does not boot, does not read drive . I used resizeStack method to get the ...
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2answers
779 views

EFI system partition repair

I'm having a problem with the internal SSD on one of my Macs running 10.10. It was working fine when I was browsing the web one day and then suddenly froze with the spinning beachball; I couldn't ...
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0answers
82 views

How To Perform External USB Disk Clone

This question is similar to this one: Partitioning Software I have two WD 2TB external USB disks. The first is formatted for use as a backup disk for a Windows 7 netbook. Mac OS Disk Utility does ...
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1answer
180 views

Expanding a Fusion Drive partition

I created a partition on my Fusion Drive when I first purchased my iMac running Yosemite, and I would like to now resize that drive ("Data" in the screenshot below), but Disk Utility doesn't allow it ...
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1answer
236 views

I erased the partition where Windows 10 was previously installed. How can I merge it with my OS X partition?

So I started up Disk Utility and erased my BOOTCAMP partition and set the format to OS X Extended (Journaled). This is how my partitions look like now: As you can see, I have a BOOTCAMP partition ...
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1answer
177 views

How do I fix a corrupted USB drive on OS X?

I accidentally bumped the drive while repartitioning it and it unmounted. After that when I tried to repartition with Disk Utility I got Partition Failed with the error: Could not open device Now I ...
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1answer
36 views

Attempting to dual-boot Windows on late 2011 Mac but the partition number is greater than 4

I'm not sure what I'm supposed to do here. For some background knowledge, my late 2011 Mac does "not have UEFI firmware and the ability to boot Windows installers from USB flash drives until the ...
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2answers
436 views

Can't reformat SD card (Yosemite)

I have a 2 GB SD card that I can't reformat. It seems pretty corrupted. If I go into Disk Utility, I get these various error messages for each option: Repair Disk: Disk Utility can’t repair ...
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2answers
247 views

Partition map rebuild

I have an external hdd that doesn't mount anymore. I think I screw up with all the research I done and things I try. I have vital info on this hdd and I'm really afraid to lose it. I tried this: ...
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17 views

Can't remove partition on Macbook

I can't delete a partition on my macbook. On my main hard disk, I selected the partition I want to delete however I can't click on the '-' symbole. I already read a topic talking about a similar ...
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0answers
53 views

How to fix GUID hard drive corrupted to MBR?

I have a micro SD that suddenly stopped working. I tried everything on the internet (believe me, everything). I don't mind losing the data on it, I just want to be able to use it again. So here I go: ...
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1answer
100 views

Boot camp install of Windows 7 issue, no bootable devices (virtualbox fix please)

I'm on a MacBookPro8,1, Late 2011 and I'm running latest version of El Capitan with SIP disabled (if that matters at all) @DavidAnderson I've been following the tutorial steps from @DavidAnderson ...
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0answers
24 views

2 Disks with the same name, how do I delete one?

I initially boot-camped a disk into a windows partition, and wanted to delete it. Initially I thought formatting it to free space would work, but it didn't. I tried again and accidentally formatted it ...
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1answer
449 views

Resize 'Macintosh HD" into unallocated space vacated by Bootcamp partition

I have a Boot Camp partition on my MBP. When initially setting up the Boot Camp installation I set this partition to be quite large but now I wish to utilise more of that space in the Macintosh HD ...
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26 views

Is there any way to boot from my BootCamp Partition after installing Ubuntu MATE?

So I've been running BootCamp on a 13-Inch Late 2007 MacBook for a while now using these instructions and everything was working fine. (Of course, I still have my Mac Partition.) However, yesterday I ...
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40 views

Time Machine Partition gone from external hard drive, can't repartition

I've got a 1TB external drive which used to have two partitions: One formatted in NTFS to share files between Mac and Windows, and one for Time Machine Backups. I haven't used it in quite some time. ...
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1answer
383 views

Mac Crashes During Boot Camp Assistant Disk Partitioning

The other day I was using Boot Camp Assistant to partition my 2015 MBP to dual-boot Windows 10. I came back to discover my Mac was had just crashed and rebooting. I knew this could have gone very ...
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1answer
181 views

How to format multiple exFAT partitions on USB drive?

I'm following the instructions in Creating a bootable Clonezilla dual partition USB device but using my Mac laptop running El-Capitan. I managed to create an MBR partition table and two partitions on ...
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0answers
40 views

I can't boot my iMac to Mac OS X

I have Windows (Boot Camp) installed. So I ran out of storage and thought about partitioning my Mac's part of drive. I partitioned my Mac's drive and set Windows to boot by default. Once I lost ...
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46 views

EFI Boot icon on startup menu

I completely removed Boot Camp partition from my MBP (by DiskUtil). Everything is OK, but now when I start the system with the boot menu I see the "EFI Boot" icon instead "Windows" drive. What does it ...
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42 views

MacPro internal HD unreadable when moved to external USB Dock - and vice-versa

Since I just installed a NAS, and I want to transfer several TB from my Mac Pro's internal hard disks (4 of them), I wanted to make it faster by connecting those hard disks directly to the NAS using ...
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1answer
160 views

Crashed when creating a partition - now missing drive space!

Just a couple of hours ago, while I was taking a GNU course, I decided to create a partition on my SSD to have ubuntu installed, meanwhile the disk utility was doing that, suddenly it just crashed and ...
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1answer
61 views

Cannot extend partition after failed bootcamp install

I got an error while trying to install Windows 10 on my Mid 2014 Macbook Pro via Bootcamp Assistant. The error occurred whilst partitioning the disk: Your disk could not be partitioned. An error ...
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1answer
139 views

Windows 10 will not boot anymore

Urgent! I have an existing Windows 10 installation via Bootcamp which has been on my Mac for months without issue. However for ages I have been wanting to read my Mac partition from Windows which it ...
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1answer
222 views

How to change the “Recovery HD” partition to type “Apple_Boot”?

Typing in the terminal diskutil list gives me this... /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme ...
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86 views

Cannot either mount or repair greyed out partition

As a likely symptom, I started boot camp earlier in today to install a dual boot Windows on my machine and the install/remove Windows option was greyed out and I could not select it. After that, I ...
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2answers
1k views

Can't Delete Partition

I created a partition to run Snow Leopard on my computer running El Capitan and no longer need it. I allocated 20GB to that partition. Here's what I've done. I first go into Disk Utility, select my ...
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1answer
200 views

Cannot unmount disk0 resource busy

I am unable to wipe my hard drive and install new OS X as the resource is busy. I would imagine this is because I have Recovery open on this disk and that's why it is busy. I've tried: diskutil ...
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1answer
476 views

Partition Map Failed Because No Slices Were Found

I have an external hard drive that I've used with my Mac for years, with no issues. Today I tried to plug it into my work PC to get some files off it (Windows 8), and it wasn't recognized. I tried to ...
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1answer
326 views

Mac won't boot Windows partition after using disk utility

I needed more space on my Windows partition... So I used Disk Utility to free up some space from the OS X partition, and upon restarting to Windows in order to add the free space to windows, I ...
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1answer
66 views

Boot Into Recovery Partition After Installing Linux.

I want to install Linux on my mid 2014 Macbook Pro for educational purposes. However, I don't want this to be permanent. I've tried to partition the hard drive and install both OSs but I have not ...
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62 views

Free space not showing in Disk Utility after Boot Camp Error

I recently tried removing my Bootcamp partition via the Boot Camp utility. It gave me an error and did not restore my OSX partition to full size. I tried going into Disk Utility to manually restore ...
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32 views

Unsuccessful installation of Win 10 via Boot Camp

I've tried to install win 10 using Boot Camp but something went wrong, win installer couldn't create partition so I've canceled the process. Now I'm missing ~80gb of space and I have no idea where ...
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406 views

Boot Camp fails on iMac late 2015 2TB Fusion drive

After one week of try and error I need your help! I'm trying to install Windows 8.1 via Boot Camp on my iMac. What I have: - late 2015 iMac 27", 2TB Fusion drive, OS X 10.11.1 - Windows 8.1 64-bit ...
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1answer
25 views

Splitting Partition On External Drive

I have a 1TB external drive with three partitions: FAT32 for extra storage (~500GB) Ubuntu (~499GB) Linux swap space (~1GB) I want to boot to rEFind and then to Ubuntu from any Mac; preferably ...
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7 views

How to fix bootable OS on Mac with Grub Rescue [duplicate]

Yesterday I installed Kali Linux 2.0 on my MacBook Air (runs El Capitan). However, after managing to run it, and exiting it, i couldn't find Kali on my laptop anymore. I forgot to install Refind ...
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124 views

Grub Rescue on Mac

I have a problem: yesterday I installed Kali Linux 2.0 on my Macbook air (runs El Capitan). However, after managing to run it, and exiting it, i couldn't find Kali on my laptop anymore. I forgot to ...
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0answers
317 views

How do I stop Winclone from trying to write to the MBR and write instead to EFI?

Using Winclone 3.4 I have received this error twice now, trying to restore a backed-up Bootcamp partition. "Updating MBR failed. See the system log for additional information." 11/22/15 ...
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1answer
238 views

Cannot delete partition (minus greyed out) - non-encrypted, no core storage

When trying to install Windows 10 from scratch on my Late 2013 MacBook Pro, I was unable to remove the old BOOTCAMP partition through the Boot Camp Assistant. I erased the partition with Disk ...
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0answers
40 views

Delete yosemite partition from dual boot with el capitan

I want to install El Capitan and dual boot it with my current installation of Yosemite. I know how to achieve that with 2 partitions. I just wonder: if, later, I want to delete Yosemite, can I just ...
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1answer
11 views

Transfer capacity between two partitions

I have created two partitions: System 850GB Data 150GB what I actually want is: System 200GB Data 800GB ...however, disk utility doesn't let me either merge these two partitions or transfer ...
2
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1answer
503 views

Messed up 1TB Fusion Drive Partitions (on iMac 5K)

Alright, so I did something stupid today, and I really need some help right now… So kinda like the situation in this post I think I messed up the Fusion Drive on my 1TB iMac (with BootCamp), I messed ...
0
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1answer
57 views

Did something wrong with partitioning my SSD

I tried to make a partition for Windows on my Mac by using Apple's Disk Utility, because bootcamp already showed me that it didn't work for some reason. But now I'm stuck with a 70 gb hard disk, and ...
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1answer
90 views

EFI automounts on startup

After upgrading to the newest El Capitan from 10.10. to 10.11.1 - I guess - the normally invisible EFI partition appears on the desktop as a regular volume on different machines, if I choose to show ...
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1answer
46 views

Time Machine offers to erase disk data (format), will it delete all my partitions?

So, I'm trying to perform my Macbook backup on my 3TB drive. This drive is currently has a GPT table with 4 partitions: BackupMain BackupKubuntu BackupWindows BackupMac Before BackupMain, there ...
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1answer
27 views

Corrupt Time Machine

I have an external disk partitioned in three /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *1.0 TB ...
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0answers
21 views

Create secondary partition for Windows

Recently I installed windows 7 to iMac bootcamp. But how to create more partition similar to normal windows installation? I've read on article from apple said: Warning: Do not use other apps or ...