FileVault: cannot enable due to "wrong disk format"

Hi fellow Mac users,
I just tried to enable FileVault on my iMac 27" but I got an error message (after completing the security questions and hitting "restart") that FileVault cannot be activated because "due to wrong disk format: some disk formats do not support the recovery partion that needs to be created... "
My internal disk however has never been touched by me, it is Mac OS Extended (Journaled) / GUID, so imho everything should be fine.
Do you have any ideas what might be wrong?
thanks a lot
best
Wolfgang

Triple-click anywhere in the line below on this page to select it:
{ diskutil list; echo; diskutil cs list; } | open -f -a TextEdit
Copy the selected text to the Clipboard (command-C).
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V).
A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. The title of the window doesn't matter, and you don't need to post that.
If any personal information appears in the output, anonymize before posting, but don’t remove the context.

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Solved: I cannot manage (bring online, initialize, partition, format, or write to) a VHDX hard drive once it has "Enable Virtual Hard Disk Sharing" enabled.

Hello,
Issue:
On a Virtual Machine with a secondary VHDX attached, I cannot manage (bring online, initialize, partition, format, or write to) the VHDX hard drive once it has "Enable Virtual Hard Disk Sharing (VHD Sharing)" enabled.
Questions:
Should I be able to manage (bring online, initialize, partition, format, and write to) a VHDX hard drive once it has VHD Sharing enabled? If I should be able to manage it, what am I missing?
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One SuperMicro Cluster In a Box (CIB) with 2012 R2 Data Center on each node. Microsoft Failover Cluster installed and working on each node. The Failover Cluster Servers on each host passes all cluster validation tests. Two Hyper-V 2012 R2 Data Center Virtual
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SOFS. Integrity bit and read only turned off on VHDX file.
Each of the two Hyper-V VMs have one 127Gb VHDX Generation 2 primary hard drive and 1 VHDX secondary hard drive attached, both on SCSI Controller #1.
Background:
If I start VM1 without the VHD Sharing enabled on the secondary hard drive, I can bring the drive online, initialize, partition, format, and write to the drive.
If I enable VHD Sharing, I can no longer modify the drive in Disk Management in any way. With or without VM2 running.
Both VMs and the CSV and SOFS are on the same host cluster server, or not, no difference…
The VHDX is referenced either by the CSV name C:\ClusterStorage\Volume1\TEST1.VHDX
or a Shared Folder name
\\sharedfolder\folder\Test1.VHDX .
If I start VM1 with VHD Sharing disabled and I format the drive, then shut down and enable VHD Sharing, the drive is offline and requests initialization which fails with an "I/O device error", every other attempt to manage the drive fails with
the same "I/O device error", error.
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VDS fails to write boot code on a disk during clean operation. Error code: 8007045D@02070008
Log Name:      System
Source:        Virtual Disk Service
Date:          3/3/2015 11:39:18 AM
Event ID:      10
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      Server1.Domain.local
Description:
VDS fails to write boot code on a disk during clean operation. Error code: 8007045D@02070008
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
    <Provider Name="Virtual Disk Service" />
    <EventID Qualifiers="49664">10</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-03-03T19:39:18.000000000Z" />
    <EventRecordID>27318</EventRecordID>
    <Channel>System</Channel>
    <Computer> Server1.Domain.local </Computer>
    <Security />
</System>
<EventData>
    <Data>8007045D@02070008</Data>
</EventData>
</Event>
AND
Log Name:      System
Source:        disk
Date:          3/3/2015 12:16:42 PM
Event ID:      153
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      Server1.Domain.local
Description:
The IO operation at logical block address 0x0 for Disk 1 (PDO name: \Device\MPIODisk1) was retried.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
    <Provider Name="disk" />
    <EventID Qualifiers="32772">153</EventID>
    <Level>3</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-03-03T20:16:42.017090000Z" />
    <EventRecordID>27333</EventRecordID>
    <Channel>System</Channel>
    <Computer>Server1.Domain.local</Computer>
    <Security />
</System>
<EventData>
    <Data>\Device\Harddisk1\DR1</Data>
    <Data>0x0</Data>
    <Data>1</Data>
    <Data>\Device\MPIODisk1</Data>
    <Binary>0F01040004002C00000000009900048000000000000000000000000000000000000000000000000000020488</Binary>
</EventData>
</Event>
Thanks again for any help,
Robert

Hi All,
I had to buy a Willy Wonka bar and spend a golden ticket to get an answer to this one.
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Sachin Kumar Support Engineer | Windows Server Setup Team | Microsoft Enterprise Platform for finding the answer to this one.
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Mac mini OSX10.9.3
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ACTION ATTEMPTED: copy backup files from Backup Disk to Startup Disk (as temporary repository)
ERROR MESSAGE
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and I cannot find any information about case sensitive format.
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Error: Windows Cannot Be Installed to This Disk. The Selected Disk Has an MBR Partition Table.

Error: Windows Cannot Be Installed to This Disk. The Selected Disk Has an MBR Partition Table.
Error: Windows Cannot Be Installed to This Disk. The Selected Disk Has an MBR Partition Table. On EFI Systems, Windows Can Only Be Installed to GPT.
I found one solution to this problem on hp forum but my laptop has boot legacy and does not disable the efi boot order.
HP Model# HP 1000-1140TU Notebook PC
Serial# 5cg2481dbg
Product# c8c94pa#uuf
This is solution which is found on hp forum
SolutionThe resolution to this issue depends on the the hard disk volume size:
Follow these steps if the hard disk volume size is less than 2.19 TB:
Temporarily disable the EFI Boot Sources setting in the BIOS:
Restart the computer, and then press F10 to enter the BIOS.
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Select File > Save Changes > Exit .
Install the Windows operating system.
Enable the EFI Boot Sources setting in the BIOS:
Restart the computer, and then press F10 to enter the BIOS.
Navigate to Storage > Boot Order , and then enable the EFI Boot Sources .
Select File > Save Changes > Exit .
Follow these steps if the hard disk volume size is greater than 2.19 TB:
Install the HP BIOS Update UEFI utility from the HP Web site:
Click here to access the document "HP BIOS Update UEFI" .
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Follow the steps in the Microsoft document titled "How to Configure UEFI/GPT-Based Hard Drive Partitions" (in English) to create a GPT partition.
Click here to access the document "How to Configure UEFI/GPT-Based Hard Drive Partitions" .
NOTEne or more of the links above will take you outside the Hewlett-Packard Web site. HP does not control and is not responsible for information outside the HP Web site.

I am having the same problem. Windows is trying to install. It identifies the various partitions but says that I cannot install Windows on the Boot Camp partition or any other. I select Drive options (advanced) and Format the Boot Camp drive, but it makes no difference.
This is the Windows error:
Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks.
Windows cannot be installed to this disk. This computer's hardware may not support booting to this disk. Ensure that the disk's controller is enabled in the computer BIOS menu.
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The ipod "IPOD" cannot be updated. The disk could not be read or written to

"The iPod "IPOD" cannot be updated. The disk could not be read or written to"
"The iPod "IPOD" cannot be updated. An unknown error occurred. (-50)"
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I attempted to restore the iPod, but guess what? I got this message every time:
"The iPod "IPOD" could not be restored. An unknown error occurred (1418)"
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I finally reinstalled iTunes and my 2G Shuffle on my another station (PC portable + Windows XP) and that functions without trouble.
As I followed exactly the same procedure of installation, it's difficult to me to explain differences.
For each pc :
- No iPod or iTunes previously installed before this one
- All the rights (administrator)
Differences :
- The OS (Windows XP and Windows XP Pro)
- A lot of USB peripherics declared on my first PC.
I tend to think that the problem comes from the detection or the declaration of the port usb, but I'm not at all an expert.
So my trouble is solved, but not with a satisfactory solution.
Patrick
Windows XP Pro

FileVault: cannot enable due to "wrong disk format"

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