How do I protect my FileVault partition from Boot Camp?

I have an iMac running OS X Yosemite and Boot Camp with Windows 8.1. The OS X partition is protected with FileVault, but when I boot into Windows (rEFInd Boot Manager), I can access my Yosemite partition from Windows, without entering a password at any point, other than the login for my Windows user. I encrypted my OS X partition with FileVault after I installed Boot Camp and Windows, maybe this is why?
I want to make sure my OS X partition is protected in case of theft. Right now believe I that I would be able to boot the iMac with Active@ Boot Disk (or similiar), reset my Windows-passwod and access the OS X partition that way around.
Can anyone explain why I am able to access my FileVault-protection OS X partition from Windows?
Can I solve this without installing BitLocker on the Windows partition? I only use it for gaming, so it doesn't contain anything of importance.

Hey Loner
I think you might have misunderstood my problem. I am able to boot into both OS X and Windows without any problems. I can read the OS X partition from Windows without any problems as well. My issue is, that I’d think that the OS X partition should NOT be visible from Windows, as it is FV encrypted.
Here is the asked information:
sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]
Signature: 0xAA55
         Starting       Ending
#: id cyl hd sec - cyl hd sec [     start -       size]
1: EE 1023 254 63 - 1023 254 63 [         1 - 490234751] <Unknown ID>
2: 00    0   0   0 -    0   0   0 [         0 -          0] unused
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
sudo gpt -vv -r show /dev/disk0
gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 490234751
      start       size index contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6
         40     409600      1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640 351563960      2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
351973600    1269536      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
353243136 136990720      4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
490233856        863
490234719         32         Sec GPT table
490234751          1         Sec GPT header

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You can try removing it in Disk Utility.
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http://support.apple.com/kb/HT4818
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How you remove Windows from your computer depends on whether you installed
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partition: Start up in Mac OS X and use Disk Utility, in the Utilities folder, to reformat it
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2 Quit all open applications and log out any other users on your computer.
3 Open Boot Camp Assistant.
4 Select “Remove Windows 7,” and then click Continue.
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wadelaw wrote:
I may not have been clear before. I want to know the best way to migrate an existing Boot Camp WinXP installation into a Parallels VM. I would rather NOT simply use the Boot Camp partition as a VM.
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As made clear in the title:
I'm trying to create a Windows partition using Boot Camp. An error comes up telling me that I need to reformat my current partition(s) into one single partition. However, it's already formatted in the correct format, and is already a single partition.
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diskutil list:
/dev/disk0
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mount:
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devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
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Boot Camp error: The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Jounraled) volume or already partitioned by Boot Camp Assistant for installing Windows.

Hi!
I am getting the error:
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This message, and threads like yours got asked daily for over two years, now it is only a couple times a week!!
Is it so hard to follow through? you were to have backup already, clones are best, then erase/format and restore.
Then partition.
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"Booting from Boot Camp Assistant created USB Drive...Failed to load BOOTMGR"

Hi Apple Ppl of the Wrld: I need help I been working on installing windows 8 on my Mac.
Spec of equipment:
Mac Book Pro Mid 2012
Bootcamp Version: Version 5.0.4 (473)
Bootable USB Flash Drive: Type Scan disk 4 GB windows 8 pro iso image but without the driver and the 2nd Scan disk USB flash drive with 32 GB with the Bootcamp Drivers downloaded and saved to this drive.
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1st Bootcamp is not recognizing the Original Microsoft 8 Pro backup disk from microsoft itself.
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Please can you help It would be of great help.
<Email Edited by Host>

from what i understand you are trying to install win 8 pro from a "backup disk" the one that you purchased from microsoft.
this will not work, it is not an installer disk.
you need to start the process again. erase the partition you made on your hdd. in disc utility click the minus button after selecting the bootcamp partition, then manually drag the divider down fully then apply.
next, erase your usb then format it.
download win 8 iso from here;
http://getintopc.com/softwares/operating-systems/download-windows-8-pro/
it is perfectly legal to use your purchased product key in this install.
in bootcamp select the iso image you just downloaded, select your preferred partition size, check all 3 options.
you have the support software on another usb but you wont need it so it can be discarded. the install will work far better with the iso and support on the same drive.

I can't start windows 7 normally from Boot Camp

I can't start windows 7 normally from Boot Camp.
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I would guess and sorry for asking but you already tried booting from Windows 7 DVD and doing auto repair?
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Restore check points
Uninstall last update or driver
Clean the system of debris temp files, caches, registry errors, fonts and left overs
make sure you have 20% and 12GB free space or more
A hard shutdown can create more problems.

I can´t remove win from my mac because I can´t select the remove option from boot camp assist. Can anybody help me?

I can´t remove windows partition from my mac because I´can´t select the remove option from boot camp assit. Can any body help me?

open disc utility choose the drive you need partitioning highlight the bootcamp partition and click on the minus sign at the bottom left.
after this manually resize your drive by dragging the partition line all the way down and click on partition.

How do I protect my FileVault partition from Boot Camp?

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