1 2 Previous Next 17 Replies Latest reply: Jul 18, 2012 3:27 PM by GigDR
GigDR Level 1 Level 1 (0 points)

Hi all,

 

I have a  Mid2011 iMac with 2TB internal hard drive, superdrive and an external Thunderbolt SSD.

On the SSD is my system, on the internal hd is just data stuff.

 

So my problem is when I start the Boot Camp Assistant it gives me this error

 

"You cannot partition an external disk or RAID disk.

Restart your computer using an internal disk that is not part of a RAID set."

 

so, what am I supposed to do? My internal drive has no system installed so nothing to boot from.

  • 1. Re: Boot Camp Assi doesn't like my external system drive
    Kappy Level 10 Level 10 (226,760 points)

    Windows cannot be booted from nor installed on external drives. That is the reason for the error.

  • 2. Re: Boot Camp Assi doesn't like my external system drive
    GigDR Level 1 Level 1 (0 points)

    yes, I understand that but can't it install to the internal drive?

  • 3. Re: Boot Camp Assi doesn't like my external system drive
    Kappy Level 10 Level 10 (226,760 points)

    Yes, but Boot Camp Assistant will only partition the internal drive if it has OS X installed on it or another internatl drive. In your case you have only one internal drive, so you must have OS X installed on it to use Boot Camp Assistant.

     

    What I would suggest is that you open Boot Camp Assistant then click on the large Print Documentation button. Read the documentation carefully.

  • 4. Re: Boot Camp Assi doesn't like my external system drive
    GigDR Level 1 Level 1 (0 points)

    I don't need to print it to read it, thanks but no thanks.

    I was frustrated with the documentation because it wasn't clear enough to me that you cannot install bootcamp to an internal hd when the OS X system is only installed to an external drive.

    That you can only install bootcamp to an internal drive was clear enough.

     

    I don't quite see the reasoning behind this though... Oh well...

  • 5. Re: Boot Camp Assi doesn't like my external system drive
    Kappy Level 10 Level 10 (226,760 points)

    You will have to ask Microsoft. This is a Windows issue, not one of Apple or Boot Camp Assistant.

     

    If you search Google you will find there are mechanisms for getting Windows to install from a USB device, but you will need access to a Windows computer to implement them.

  • 6. Re: Boot Camp Assi doesn't like my external system drive
    The hatter Level 9 Level 9 (58,880 points)

    Windows very rarely installs unless the port is on the motherboard itself or the controller is one which has a Windows boot init.

     

    You can clone windows here and there and might get the same result in the end.

    Or swap hard drive places.

     

    But you can boot from external and use the internal drive - it either has to see the drive as 100% MBR or you have OS X present on the internal drive also.

     

    It really should work. The docs are not written with dual drive Mac Pro and others in mind: iMac w/ SSD and 2TB hard drive and now dual drive MacBook Pro with two SSDs etc. where both drives cannot be GPT/GUID as Windows won't install in those cases either.

  • 7. Re: Boot Camp Assi doesn't like my external system drive
    GigDR Level 1 Level 1 (0 points)

    I doubt MS will respond to my question why Apple's Boot Camp Assistent won't allow me to use the internal hd for installing Windows when OS X is on an external hd. So thanks for that really great suggestion.

  • 8. Re: Boot Camp Assi doesn't like my external system drive
    Kappy Level 10 Level 10 (226,760 points)

    I'm afraid you misunderstood. Ask MS why Windows won't install on or boot from external drives. Has nothing to do with Boot Camp.

     

    No need to be rude.

  • 9. Re: Boot Camp Assi doesn't like my external system drive
    The hatter Level 9 Level 9 (58,880 points)

    you can. you can even just boot from the DVD by itself, format and use 100% internal drive.

    It does work.

     

    BCA is or use to be called a "one trick pony" that would only do it one way / it's / and even if you had 4 internal drives there were unwritten 'rules' of what and how.

     

    But totally doable. BCA is ONLY required for:

     

    downloading support drivers

    partitioning where OS X is and will be for a dual-boot two partition setup.

     

    Otherwise it is optional or even not needed.

  • 10. Re: Boot Camp Assi doesn't like my external system drive
    GigDR Level 1 Level 1 (0 points)

    The thing is I neither want to install Windows on an external drive nor boot Windows from it. I want to install Windows on my internal hard drive and boot it from my internal hard drive. I thought this could be possible same as you can have different OSX systems on an external and internal hd and the mac asks from which to boot when you hold down cmd while starting the mac.

     

    I'm a bit rude as you seem to be quite condescending in your replies, starting with the suggestion to read the documentation even though that is not really covering my problem.

  • 11. Re: Boot Camp Assi doesn't like my external system drive
    GigDR Level 1 Level 1 (0 points)

    Thanks hatter, this put me on the right track.

     

    So for everyone facing the same problem and find no help in the manual or with replies from people that don't actually seem to read what the problem is:

     

    - run Boot Camp Assistant and even though it won't prepare the drive for installing Windows, let it download the Windows support stuff and put it on an USB stick or a drive with FAT32

     

    - run the disk utility and add a partition to the drive you want to install Windows to. For Windows 7 it seems to be recommended to make the partition at least 20GB big.

    Hint, you can resize the MacOS extended partition in the partition tab of the drive by just dragging the partition up. Or just click the +. Format the new small partition for Windows as Fat. If you have something like TuxeraNTFS installed *don't* make it an NTFS partition. W7 installer doesn't like that.

     

    - put the installation DVD into the superdrive and reboot while holding down the C key.

     

    - Your mac will boot from the DVD and the Windows installer will start

     

    Now you can follow the official guide with Step 3 - Installing Windows and you are set.

     

    Easy as pie it seems. I wonder why Apple makes the Boot Camp Assistant not advanced enough to handle this kind of setup...

  • 12. Re: Boot Camp Assi doesn't like my external system drive
    The hatter Level 9 Level 9 (58,880 points)

    I would have to point to the You don't need to do anything of my comments above.

     

    You don't partition the drive with Disk Utility. No purpose.

     

    You can if you want and in that case set the drive partition table to Windows Master Boot Record and devote the drive to a single FAT32/MSDOS volume if you must.

     

    You will be formatting it later in Windows Installer and you can have one or more NTFS volumes.

     

    This is a Windows only drive.

     

    If you want to have an HFS+ volume, you can convert or format or use Paragon's utility that can convert while maintaining data HFS <=> NTFS for those that had data that they need to maintain. Or install HFS and NTFS drivers for both operating systems.

     

    And we have been saying 50/60 and up for Windows 7. Not 20GB which is what the actual core OS itself uses, does not take into account page, hibernation, temp, cache, apps, data, thumbnails, and the 10GB+ for all the initial updates to be applied. Or the GBs that are needed to create and setup each user account. (You won't be able to logiin on next restart with 20-25GB). And no room for those handy "restore points" that need a couple GBs.

     

    Now, if you are ONLY using a small 50GB on a drive, before answering, how do you plan to actually use the drive? HAS to be answered first.

     

    I don't endorse this but it was educational and well written write-up:

    Successful setup of OS X Lion + Data Partition + Bootcamp Win7 Ult
    https://discussions.apple.com/thread/3293948

     


     

  • 13. Re: Boot Camp Assi doesn't like my external system drive
    GigDR Level 1 Level 1 (0 points)

    I was still refering to *my* problem, which was that I wanted to use *parts* of my internal hard drive, so yes, I needed to partition it.

     

    [quote]Now, if you are ONLY using a small 50GB on a drive, before answering, how do you plan to actually use the drive? HAS to be answered first.[/quote]

    1st, my W7 pro installation takes up 10-11GB. But yes for extensive use some more GBs are good.

     

    2nd my usage is that I still have all my data on that drive and only run W7 when I need to. It's just there for stupid tests that can't be done in VMWare (I was alpha testing some game and VMWare Fusion wasn't up to displaying the 3D graphics correctly). I don't plan to do much more with it. Now that I integrated the boot camp Windows with VmWare Fusion I will really only need to boot W7 when *really* needed which is hopefully not often.

  • 14. Re: Boot Camp Assi doesn't like my external system drive
    The hatter Level 9 Level 9 (58,880 points)

    I have never seen W7 even 32-bit take 12GB and MS lists 16GB minimum - and most of those that try have installed and then done updates, and only then cloned the OS removing what they can to trim down a normal install. A VM can be much smaller and maybe half. Not a native install and setup - no page file can also be unstable.

     

    I tend to look for rules and find that threads like ours often only get the details at the end, not up front of what is behind the need or problem or question.

     

    But you know how. And how you use the rest of the drive.

     

    ---------------

    1. First Boot Camp Limitation – Free Space Rearrangement


    Apple released its famous utility for dual-system configurations on a Mac – Boot Camp, which shrinks HFS+ volumes in Mac OS X and prepares a partition for Windows right alongside. One problem with Boot Camp is that you cannot resize these partitions later. If free space on one of the partitions is reduced to critical levels and other volumes still have a large amount of unused space, you get into trouble.

     

    The solution for this situation is to relocate space between volumes with Paragon’s CampTune utility.  CampTune rearranges free space between HFS+ and Windows partitions and shrinks existing volumes to free unallocated space on a hard disk, and create new partitions without the need to use Boot Camp at all.

     

    2. Second Boot Camp Limitation – FAT32 Only


    Apple Boot Camp does not support the creation of NTFS volumes because Mac OS X does not have the appropriate NTFS driver. Since Windows Vista and Windows 7 can be installed only to NTFS volumes, you will have to reformat this partition during the installation.

     

    An easy alternative is to use Paragon CampTune from the beginning: resize the primary HFS+ volume, create second partition, format it as an NTFS volume and install Windows directly.

     

    3. Accessing NTFS Volumes in Mac OS X


    Apple’s Mac OS X operating system has limited support for NTFS volumes; the NTFS driver in Mac OS X can read data only. You cannot change files, copy them to NTFS volumes, create new files, or  NTFS volumes – all significant limitations.

     

    However, you can easily bypass these problems with Paragon’s NTFS for Mac OS X driver. It has none of these limitations and provides the same level of NTFS volume compatibility for Mac OS X as it does for regular HFS+ volumes. You can easily manage data on any NTFS volume; create files and folders, and copy data between HFS+ and NTFS partitions. The driver adds formatting support to Mac OS X for NTFS file systems and is accompanied by set of utilities for NTFS volume management, checkup and repair -  effectively removing boundaries between two incompatible yet universally used file systems.

1 2 Previous Next